I have an 04 wrx trying to swap to a 6 speed setup. Can I use 04 sti hubs, backing plate and parking brake if I already bought an 07 sti trans, driveshaft, diff, and axles? I don’t want to have to change my current suspension set up, I have the car sitting on tiens rn with its current setup.
Thanks for your question. The splines on the hubs are different between the 5x100 and 5x114.3 hubs so you do need axles to match. Hope that helps and Stay Tuned!
Hi mate, I’ve put in a 6 speed DCCD into my gc8 v6 type ra (5 speed DCCD) but didn’t change the wiring harness to a 6 speed now my Speedo isn’t working, would you think the 6 speed wiring harness would fix this?
Thanks for your question. The speed sensor between the 5-speed and 6-speed transmission is the same. It also has its own harness and plug. I'd say it sounds like an electrical problem, or maybe the sensor got damaged in the transfer. Make sure that everything is plugged in, and that the sensor is in good shape. Hope that helps and Stay Tuned!
Does body style matter? I have a 11' WRX hatchback. I plan on doing an entire STI swap into it. Do I have to use parts from a 11'-14' STI hatch? Or can it be a sedan? Or can I use other years
Thanks for your question. As discussed at the end of this video, the narrow-body WRX's require a few different things compared to the wide-body WRX's. Since you have a 2011 which is a wide-body, I'd recommend going through our video on the GR specifically as that will be the information that applies to your car: ua-cam.com/video/CieGYuOJQj4/v-deo.htmlsi=9DN_nbdoGQBynT4_ Hope that helps and Stay Tuned!
Will a non dccd 05-08 JDM Legacy spec B 6spd work in a bugeye with stock r160? Looks to be 3.9fd 1.1tr. Says the jdm spec b even came with a r160 until 07?
Thanks for your question. You would just want to compare the rear Ring and Pinion ratio of what you have in the car to what the car that originally came with the 6-speed you are using had as discussed in the video. Hope that helps and Stay Tuned!
I have a 2007 Subaru Forester XT and would like the benefits of having the STI 5x114 lug pattern what would entail a swap for that?? Is there any benefit from going with an STI suspension instead of the Forester suspension???
Thanks for your question. That is actually a fairly involved swap, which will require switching around brakes, etc. Really, generally speaking, it isn't worth making this conversion unless you know that you need teh 5X114.3 hubs for a specific reason. Hope that helps and Stay Tuned!
I have a 2011 wrx hatchback... swapping In a 2008-14 sti fb-ty856ub1ka from Japan with the short gear ratio 50/50 tourque split with no dccd... but I'm having trouble with the wiring harness 6pin connector on the trans to the 4 pin on the car... should/can I still use the "Iwire adapter" to fix this? Even tho I dont have a dccd controller... also there is another 4 pin connector near the tail of the trams but I have nothing for it to plug into I'm not sure where it goes to or what it's for? Should I just cap it off... please help I'm awful with electrical
Thanks for your question. If you aren't comfortable with the wiring part, then yes, the iWire harness would be the best way to go as it makes the wiring plug and play. www.flatironstuning.com/iwire-turbo-to-dccd-transmission-adapter Hope that helps and Stay Tuned!
So to take all this in...I have a 05 wrx and if I choose install a sti 06-07 trans plug and play. Get the driveshaft and rear diff to bolt right in. Choice of wrx or sti flywheel clutch kit. I want keep stock brakes and suspension, so I can still run wrx axles ?
Thanks for your question. Definitely take a look at our GD WRX 6-Speed video here: ua-cam.com/video/nUJ7E2Bh5g0/v-deo.html We go into all of those questions in these. Thanks for watching and Stay Tuned!
Now if I were to swap in a 6 speed into my 11 wrx, and buy the I wire harness. Could I just connect the sti dccd like factory? Or do I need an aftermarket dccd controller
Thanks for your question. You would still have to run an aftermarket controller. The STI DCCD controller is on the STI CAN bus, so you would not only need the STI ECU, but everything on the CAN Bus that the DCCD controller needs to see to get it to work properly. The aftermarket controller is the simpler solution by a mile. Hope that helps and Stay Tuned!
You would have to check the serial number on the transmission but most likely it is a 2005 spec transmission since it was built in 2005. Hope that helps and Stay Tuned!
Thanks for your question. The neutral and reverse switches are the two things that are plugged into the side of the transmission, and then the DCCD is driven by the wires that go to the back of the transmission. Hope that helps and Stay Tuned!
So the WRX axles are compatible physically with an sti drivetrain? You can just slide them into the cups on the differentials? If that is the case one could get aftermarket uprated axles and install calipper adapters on the wrx hubs and you are set if you also get a big brake kit assuming youll be going for more than stock power? I imagine stock axles will be fine for stock ish power and still have live left in them. If that is the case that is genious and Ill be doing that when I do get to that bit on my SF5 turbo since most of the stock bits are virtually GC/GD wrx parts. However Im going to keep the stock axles for a little bit and then get conservatively uprated aftermarket axles because something has got to give and Id rather blow an axle or two than a 6 speed. even if the 6 speed is a SOLID unit Id rather be safe than sorry. transmissions are expensive and a lot more work to repair or replace than some simple axles you just undo a couple bolts and a boot retainers and slide them out given the new axle is a complete unit with a cv joint ready to go. I dunno it just seems like the easiest and simplest way instead of getting an entire STI suspension and fit it on the car and spend heaps of money on all those bits and then make them nice if they arent already in immaculate condition. its good to have options anyways.
Up front, yes, the WRX axles snap into the STI trans. This is not the case if you are using an R180 rear differential. Keeping your WRX axles definitely makes the swap easier, and that is one of the reasons that we made this video. We wanted to let people know that there was an easier way to get the STI transmission installed compared to going with a complete STI driveline. Thanks for watching and Stay Tuned!
Thank you for your question. You can use any STI transmission, you just have to make sure that it will work with the rear differential you use. Hope that helps and Stay Tuned!
There is a bit of wiring involved there. Take a look at the auto to manual swap that Bucky did with iWire here: ua-cam.com/video/eYlMLlRInps/v-deo.html And you might want to check in with iWire about your specific model to see if there is anything else you need to do. Thanks for watching and Stay Tuned!
Thanks for your question. We actually have a video all about GR swaps. Here is a link to that: ua-cam.com/video/CieGYuOJQj4/v-deo.html Between the information there, and the narrow-body info at the end of this video, you should have all the information you need. The short answer is that it doesn't matter what year STI transmission you get, as long as the rear differential works with the transmission. Thanks for watching and Stay Tuned!
Thanks for your question. Yes, the process is basically the same for the GC chassis as the GD chassis. As to cost, there are a lot of variables in play there in terms of components. To start with, you can look at our 02-03 WRX kit (which would be most applicable to the RS chassis), and build the kit out from there. All of the parts that we work with are brand new, so they are more expensive than used, but you also know that they will not have any wear issues, etc. www.flatironstuning.com/flatirons-6-speed-transmission-swap-package-02-03-wrx Hope that helps and Stay Tuned!
That is definitely a bit more challenging of a place to start. Largely because of the need to replace the pedal box, but also because on the newer cars specifically, you have to address the ECU more as well when you take the automatic transmission away. Thanks for watching and Stay Tuned!
Thanks for your question. We specifically talk about doing a 6-speed swap in a narrow body WRX in the video here: ua-cam.com/video/uf4tcG5GqDU/v-deo.htmlsi=C8aQRNNLXMgiDKa1&t=755 That should answer any questions that you have. Thanks for watching and Stay Tuned!
At 14:00 you talked about running a 11-14 knuckle to fix the width issue could I not just use the 08 sti knuckle? Or are they different dimensions compared to the 11-14 knuckles
So if I do this COMPLETE 6 SPEED SWAP Parts included: Transmission with crossmember Shifter linkage Driveshaft All four axles Rear differential Starter Flywheel Pressure plate All four hubs And control arm everything will work ?
Thanks for your question. In addition to this FAQ video that we have, we also have videos on swapping the STI 6-Speed into either a GD WRX, or a GR WRX. Here are links to those: ua-cam.com/video/nUJ7E2Bh5g0/v-deo.html ua-cam.com/video/CieGYuOJQj4/v-deo.html We go into detail there about what parts you need to swap out, and what you can keep, etc. I'd recommend going through the video that goes with your car, and if you still have questions after that, just let us know. Thanks for watching and Stay Tuned!
I got the sti axles in the rear to fit for my narrow body and also still running wrx axles up front with the wrx hubs front and back. I keep blowing out my front wheel hubs. Is this because the sti axles in the rear are different in length?
Thanks for your question. That shouldn't have an effect on your front wheel bearings. What are you torquing your front wheel nuts to, and what tool are you using to tighten them?
Thanks for the question. The biggest gain is the durability of the 6-speed over the 5-speed transmission. But beyond that, one thing that is often overlooked are the differentials in the STI 6-speed. The front diff and electronic center diff make a world of difference. Honestly, a big part of why the STI feels like it has so much more grip than a WRX out of the box comes down to those diff's that you get in the 6-Speed. Hope that helps and Stay Tuned!
Thanks for your question. No, those are different ratios. I'd recommend going back to this video at 6:20 where we go into detail about the rear differential ratios as that should give you the information you need about this. Thanks for watching and Stay Tuned!
Thanks for your question. We cover that swap in specific detail here: ua-cam.com/video/nUJ7E2Bh5g0/v-deo.html&feature=shares The short answer is that the transmission crossmembers ar the same. Thanks for watching and Stay Tuned!
ive also noticed that the r180 rear diffs before the my06 sti that run the suretrak diffs have the smaller flange and the ones with the plated diffs run the larger flange. my06 and my07 stis had the larger flange.
Thanks for that Kaeros! We actually ran into exactly this with the parts that Tasso was using. Though his was a 2003 JDM drivetrain. My guess initially is that this was more on the JDM cars than the USDM cars, as this is the first time that we had seen that issue come up, so we'll have to do a little more investigating. Thanks for watching!
Thanks for your question Nick. I'd recommend going through the video again as those are topics specifically covered here. If you want to go over your build plan, set up a consult with us here: www.flatironstuning.com/6-speed-consultation And we'll do our best to help you out. Hope that helps and Stay Tuned!
Help please I have a question is I have 03 sedan wrx doing v7 02-03 sti) 6speed swap Non DCCD has a 3.9 FD ratio. I’m using auto Impreza driveshaft and wanted to keep R160 hubs / axles. Will the 08-14 wrx r160 open diff 3.9 ratio bolt right up and snap into my current axles in rear. How should I proceed with my swap having issues finding R160’s with 3.9 ratios. Thank you !
Thanks for your question. Yes, that R160 will work because it is the correct ratio. Keep in mind it is an open diff, and you also have an open front too unless you have a type RA or Spec-C transmission. You will most likely want to address that at some point. Hope that helps, and Stay Tuned!
FlatironsTuning thanks for reply! Yea I was thinking that diff won’t last longer will it matter due to v7 non dccd trans and rear diff being open will there be torque split issues? Will I be better if getting dccd v7 trans instead and not hooking up controller until I can afford one? Mind you this is going on 03 wrx sedan. Thank you!
@@itzzztoodah8203 The main thing that can come up with an open front and rear differential is your car is basically 2 wheel drive. One up front, and one in the rear. Since you don't have any traction control, etc., you can encounter a situation where the suspension articulates, and you lose drive. Going into parking lot with a steep slope for instance. Or if you are ever driving in snow and ice. In that case, using the DCCD controller to lock the center diff will help. Overall, you just won't have the same feeling in the car as you would with a front TBD, and some kind of TBD or LSD in the rear. But the car will still be completely driveable. Hope that helps, and let me know if you have any other questions.
Thanks for your question. Yes, the iWire harness would still work. The lines from the DCCD would just not be connected, then when you are ready to get that working, the framework is there to connect to the DCCD controller of your choice. Hope that helps, and Stay Tuned!
So is the Neutral Safety switch the same on both the 07 STI and 02 WRX? I can't remember whether I used the WRX or STI, but now that I have everything back together, I'm having issues with my idle. I've already replaced the IACV with a new OEM one, adjusted the throttle cable and did a smoke test, but I'm still having issues. I'm suspect it might be the safety neutral switch. Thanks.
@@FlatironsTuning ic.. How about avcs head? I just wondering if v8 avcs head can use on my 1999 forester ej20 block, will be save a lot buying sti motor
Thanks for your question. As long as the R180 works with your WRX transmission, you wouldn't have to change anything with the transmission or front axles. Thanks for watching and Stay Tuned!
My clutch master cylinder started to fail on my 2004 Subaru TS. I went to a parts shop to get both the master and slave cylinder. When I got home I noticed the parts didn't fit my car. When I went back with the old parts off my car the guy told me the parts where for a WRX STI. I bought the car at auction and no nothing about it's history. It runs great, I've been driving it since last year. I've never tried shifting the car into six gear ever. Maybe at one point they used the same master and slave setup but why? Anyone have any clues?
Thanks for your question Lewis. For the Master cylinder, there hasn't been much change in those. For the slave, of course the clutch type makes a big difference. If you have a 2004, you should have a pull-style clutch. Most of the pull style clutches have similar slave cylinders, but there have been some changes over the years. Good luck getting your clutch working again, and thanks for watching!
I want to do an automatic 2003 wrx to a sti 6 speed manual transmission if that's possible, and if not then what is the most reliable 6 speed I can put into my car is there anyone I can talk to about this. How new of a transmission doesn't matter I just want to know what is the best transmission I can put into my car that'll last me and be as reliable as possible I want to be able to race my car sometimes but it'll mostly me a everyday driver so I need it to not die anytime soon
Thanks for your question. The biggest hurdle for you is going to be adding that third pedal. But yes, it can be done. It will be easier to start with a MT car for what it is worth. As to what the best year 6-speed is for a swap, we have that covered here: ua-cam.com/video/vI19RFeXics/v-deo.html Thanks for watching and Stay Tuned!
@@FlatironsTuning do you have a parts list for the 07sti 6speed swap into a automatic 03wrx or know where I can find one I have checked online but haven't had any luck
I really need your help I have a 2007 wrx and I want to do an sti swap. and I also will switch the clutch kit and the suspension to sti is there anything more I have to do and also. I have found some sti transmissions but I can't find the number anywhere when I look it up the article numbers on the 2 I have found is these 2: TY856UG1MA TY856UG9AA so I'm not sure is these will fit at all
Thanks for your question. It is mostly the same, but there are a couple small differences. The biggest is the driveshaft. The issue is due to the body-lift that the Forester has. Going with a 1-piece driveshaft will make the swap much easier. If you want to stay with a stock driveshaft, it would have to be from a Forester automatic to get the height correct. And you will need a rear diff because of the different ratio of the Forester XT manual (4.44:1). Hope that helps and Stay Tuned!
Love the video and appreciate the insight. I do have a question though. I know the 11+ have adjustable differentials settings and the likes with their electrical systems. How do those translate or are they completely disabled in the swap?
What's up guys, I am new to subaru. I have a 2005 outback wagon N/A, 5 speed. I need a little more, can I get a wrx 5 speed, will the outback axles work or do I have to get a diff too?
Thanks for your question. You wouldn't want to do that the WRX gearing is much taller because the turbo engines make more torque than the NA cars. If you put that trans in your NA outback, the car would feel a lot slower most likely. Hope that helps and Stay Tuned!
@@FlatironsTuning Im thinking about doing a 6 speed from a gen 4 liberty into my 03 wrx wagon I saw some guy claim online the shafts are only 2mm or so longer do you know if you can get away with sti shafts? my wrx has the female to trans cv axles so they definitely will not be usable
@@Puma6922 The 6-Speed from the Liberty/Legacy is completely different from the STI 6-speed, and as far as I know, there is no axle that will work with your GD knuckles and that transmission.
@@FlatironsTuning it's a ty856 with a 3:54 ratio, came fitted to 2.5t sti spec liberties and 3.0 h6's here. maybe something you guys didn't get in the states
Great videos. We have a 2013 wrx. We were going to buy a 08-14 jdm 6 speed but ended up buying a wrecked 13 sti for the transmission/suspension. What are the differences between jdm and US trans? Thanks
Thanks for your question. You don't absolutely have to put in a DCCD controller, but it will really let you get the maximum benefit from putting in the 6-speed. You can use the iWire adapter to make the wiring plug and play, but swapping the 5-speed wiring over isn't too bad either. With no diff controller, the transmission will be in the default setting which is maximum rear bias. I will say that your R160 will not worth with a 2005 STI transmission though. I'd recommend making sure that you have a compatible rear differential before you start working on the swap. Hope that helps and Stay Tuned!
The 2004 wrx rear diff r160 has a final drive of 3.90 which is the same for the 2004-2005 STI. That's what I've read up on and that's what your video said as well. So are you telling me the 2005 STI trans doesnt work with the r160 3.90FD?
ua-cam.com/video/nUJ7E2Bh5g0/v-deo.html In here you say you can swap a 2004-2005 STI in a 2002-2005 wrx with no issues. It's the easiest and cheapest why to do it. Is that not the case now?
@@waltersjiu-jitsumoreheadci1080 Take a look at the video here where we go into detail on this: ua-cam.com/video/uf4tcG5GqDU/v-deo.html But the short answer is that no, the 2004 WRX rear diff, and the 2005 STI transmission are not compatible. Thanks, and Stay Tuned!
2006 Subaru wrx, I think I understand I can run; 06 sti trans Auto drive shaft R160 rear diff Existing 5 speed clutch Existing wrx drive shafts, brakes, suspension etc.??
Thanks for your question Jordan. You are close. The year of the STI transmission isn't that important. It will just have to match the R&P ratio of the R160 diff you use, as yours will not work with any STI transmission. You can't keep your clutch because starting in 2006, all of the WRX's got a push-style clutch which is not compatibly with the STI transmission. Good luck with your swap, and make sure that you check out the first video that we did on the GD swap too: ua-cam.com/video/nUJ7E2Bh5g0/v-deo.html Good luck with your swap!
FlatironsTuning thanks so much for the reply, helps a lot! So to confirm I can use the following parts; Sti Transmission & clutch with flywheel Auto drive shaft R160 that matches the gearbox ratios (what year r160 diff will match?) And that’s all I need?
Those are definitely the high points. Hopefully this video and the one that we made specifically on the GD swap will be a good resource for you. ua-cam.com/video/nUJ7E2Bh5g0/v-deo.html If you have any questions, or if you need any parts, etc., don't hesitate to reach out.
Thanks for your question. Since most of what we deal with and can get are the USDM 6-Speeds, yes, that is what we are focusing on for these videos. Thanks for watching, and I hope that helps.
Thanks for the question Brian. Basically, it is the same as the 08-14 WRX video that we did: ua-cam.com/video/CieGYuOJQj4/v-deo.html Since there is a Spec-B to refer too as well, that is a fairly straight forward swap. I hope that helps, and Stay Tuned!
This is very informative. Thanks for taking the time to make these videos. I have a question though. I'm currently considering putting an sti 6 speed into my 2011 gve/g3 wide body wrx as my 5 speed has blown synchro's and might not be worth rebuilding. I've been trying to find out exactly which sti boxes will bolt straight up but I keep coming up short. I've been told that a sti box from the same year will work, but I will need a sti shifter linkage, shifter surround and a tail shaft. If you can offer some advice or guide me to the right place to look it would be greatly appreciated. I've spent many hours on forums trying to find answers to suit my model wrx but can't seem to find concrete information. Your videos seem to be the most accurate information I've found, Thanks again and great work. Looking forward to your next videos!
MY04-MY05 STi transmission would allow you to keep your rear diff (r160) as they are both 3.9:1 gear ratios. Otherwise, you'll have to swap the rear diff (r160 to r180) and the transmission together (from the same year/code STi). You will still need the shifter linkage and all the other wiring he mentions in the video. Clutch and flywheel from the STi also, along with the clutch fork and slave cylinder from the STi (push vs. pull). The slave cylinders might be the same, I'm not sure, but I would think you might need the longer pressure line from the clutch master cylinder to the slave cylinder in any case.
Thanks for your question Dose. The reply below pretty much covers your question. Thanks for that Sam! I will add that you want to keep in mind that you have an open rear diff. If you do keep your R160, that can cause some odd behavior from the drivetrain, as it is far less than ideal considering you are getting a DCCD center diff and TBD front diff with the 6-Speed. This is especially true without a controller, but either way, that open diff in the back is an issue that you will want to address at some point. For that reason, it may be better long term not to be too attached to that, and look at other options. A 2002 - 2005 diff will have a viscus diff, but at this point, most of them will have lots of miles on them, and that viscus coupling is most likely not in great condition. This is why in our car, we just went to the STI R180 because it has a TBD to match the front in the STI transmissions, and since you have a wide-body WRX, all you need are STI axles. Lastly, you will need a slave cylinder with the STI transmission. The slave cylinder is not interchangeable between pull and push style transmissions, but your master cylinder will work just fine. Hope that helps, and good luck with your swap!
@@FlatironsTuning if the spline count on the R180 are the same as the R160, can you just use the WRX axles until you can afford also getting STi axles?
@@nekidfrog The spline count on the differential is not the same. That is why you have to use a different axle if you are going to run the R180 differential. Hope that helps and Stay Tuned!
I love all the information available in your videos. I’m doing a mild build on the EJ257 and looking for as much information as I can for the trans swap. Keep up the great videos!
I have a 2004 wrx the engine just got rod knock at 230000 miles. I have 8k saved up to play with so far but I wanted to get a good guesstemet on what it is that ima need to have a engine that can handle 700 hp but have it tuned/built to 550hp-650hp. I care about the price as long as I don't spend more than 50k usdm that's my limit. Any ideas on what kinda build I might get for $50,000? Btw none of that is for looks only for engine, transmission, air ride race suspension, brakes, rims/tires, handling, turbo, ecu, fuel system...intercooler, air oil separate basically anything under the hood, under the body, idk if anyone gets me.
Thanks for your question Branden. For that specific a topic, I'd definitely recommend reaching out to us directly. Live chat on flatironstuning.com, or give us a call. We can work with you to figure out what your best options are. Thanks for watching and Stay Tuned!
Great vid, and I have a question! Found an 04 JDM Forester STi transmission that I want to mate to my USDM GR WRX's R160 with a 1.5 Way LSD I installed in it. Since the Fozzy 6-spd has the 1:1 and 3.90 specs in theory it sounds like it should link to my WRX R160 fine and therefore I can avoid new axles. Any concerns however still running my upgraded WRX R160 with this Fozzy transmission that's non-DCCD but also had a non-Open front diff? The Fozzy STi 6-spd paired with AP SureTrac Front diff, and I know my GR WRX has an open front diff.
Thanks for your question. Yes, as long as your rear differential has the correct ring and pinion ratio for the transmission you are running, it will work just fine. As far as pairing of differentials, there is no issue running a rear clutch type differential, and a front torque biasing differential. That should work well for most applications. Hope that helps and Stay Tuned!
@@FlatironsTuning Appreciate the quick reply! Which DSS would be the proper one to link this Fozzy STi transmission to my WRX r160? www.flatironstuning.com/dss-carbon-fiber-driveshaft-wrx-sti .. actually I think I answered my question already and it's part SUSH12-C. If that's right, then with this shaft I will not need to buy a different rear differential flange?
@@paterick4o8 If you have a 2004 - 2008 Forester XT, you need the SUSH6-C. That is for the 6-Speed conversion with R160 rear diff. Thanks for the question!
@@FlatironsTuning Hmm.. My car is a 2012 WRX, and throwing in a Forester STi trans TY856WL4CC.. it sounds more like it would be the SUSH12-C shaft to fit this to my 2012 WRX R160?
This video has me very excited! I was debating on selling my 13 hatch wrx and looking for a a Sti hatch but if the parts are interchangeable this looks better to do. My question is can 6 speed be done to the stock ej 255 engine the wrx comes with? Thanks!
Thanks for your question. Yes, absolutely! The EJ series bellhousings are the same so you can bolt up the STI 6-speed no problem. Thanks for watching and Stay Tuned!
I have a 2007 WRX wagon, and want to swap a full STI drivetrain, 6 spd, axles, driveshaft, hubs, r180, and suspension. Is that possible? Are there any differences between the sedan and wagon body/frame that would cause a conflict?
Thanks for watching. The only difference is that the GD wagon is 10mm shorter track on each side. So you would have to run the STI lower control arms and lateral links to be able to use the STI axles, etc. The simplest path would be to stick with the WRX axles up front and the Driveshaft Shop conversion axles in the rear so that you can keep your hubs and suspension components. I hope that helps, and Stay Tuned!
One last question for ya, so I have an 08 wrx, for the 6 speed swap from an 08-14 sti do I need to do anything to the pedal assembly?or is my stock wrx pedal assembly just fine?
Chad Harrison I couldn’t have come out any better! The shop I took it to looked at me as If I was crazy. Told them every part that was needed and they agreed todo it. Then they call me when it’s all finished saying it works like oem and they couldn’t believe it. It’s now been over a year since the swap with about 15k miles on this setup. Runs flawless
If I wanted to use a JDM Ver7 transmission on a USDM 2003 WRX what exactly would I need to change? I’m thinking of buying a JDM Ver7 trans and most come with a rear diff and JDM wiring.
Thanks for your question. I'd recommend going through our GD specific video. That one, with the FAQ video here has all of the information you should need. ua-cam.com/video/nUJ7E2Bh5g0/v-deo.html Stay Tuned!
i have a 2001 wrx bugeye want to buy s202 donor for 6 speed swap, can it be done only the gearbox and the prop shaft? because i see the s202 has 5x114 hub and i don't want to replace my new coilover on a 5x100 hub. any suggestion? tq
Thanks for your question Lev. We talk about that a bit at the end of this video, but we have a detailed video on putting a 6-speed in a GD that goes into more detail about your specific question. here is a link to that: ua-cam.com/video/nUJ7E2Bh5g0/v-deo.html Hope that helps and thanks for watching!
Hi I just need some reassurance on my end to make sure my research is correct. If anyone has experience please feel free to chime in. So I have a 2011 WRX with a 5 speed in it. I plan on picking up a 05 Sti 6 speed swap for a killer deal. So essentially everything should be plug n play since I won’t be running the dccd controller. I’ll need: - 05 Sti 6 speed - front wrx axles (keeping 5x100 bolt pattern for now) - Sti drive shaft (will the 05 drive shaft be the same length as wrx, since I have the hatch) - Sti clutch assembly ( I heard I’ll need extra flywheel bolts since wrx uses 6 and Sti uses 9) - 05 r180 rear diff - 05 Sti rear axles - 05 transmission mount - 05 rear diff mount - 05 Sti starter Anything else am I missing? Or anything wrong with what I provided? Thanks for the help!
Thanks for your question. I'd recommend that you go through this video again, and also take a look at our GR specific swap video. ua-cam.com/video/CieGYuOJQj4/v-deo.html If you have any questions after that, feel free to reach out to us through the chat feature on our web-site. Thanks for watching and Stay Tuned!
You can also have the 2012 and later 6 speed trans machined to accept the speed transducer. It's a relative cheap and straight forward job, you just remove the front diff housing and take it to your machinist.
I am looking to put in an offer on a good deal for an 18’ sti. I want to swap the motor into my 06’ sti. May as well swap everything I can. Is this going to be expensive as far as missing for things to fit? I’m going to have help for the swap, but they haven’t worked on Subaru’s much. Just older cars. I am researching everything I can to make the job easier, if at all possible. What do you recommend? Edit: The 18’ sti is wrecked. Tires, rims, brakes, discs, tranny, engine, all pristine. Except the impact on the passenger side.
Best of luck with the swap, and hopefully our videos are a good help to you! If you need any parts, etc., feel free to reach out. Thanks for watching and Stay Tuned!
So if I swap a 2013 STi 6-speed into my 2014 WRX. Long as I use the matching rear diff from that 2013 I can use my front and rear axles into the 2013 6-speed and rear diff?
Thanks for your question. Up front, yes, your WRX axles would work, but in the rear, you would need the STI axles to run the R180 rear diff. The splines are different for the R180. Hope that helps and Stay Tuned!
great video. I have 2006 sti. engine swapped to 2003 ej205 and standalone ecu. currntly my DCCD is not working with ej205. while its working with the ej257. how I can keep the dccd working with the ej205? also what is the other things that I need to look into for this kind of engine swap? Thanks in advance
Thanks for your question. All you need to get the DCCD working is a separate controller. We like the MAP-DCCD controller, and we keep them in stock :-). Here is a link to our video explaining how that works: ua-cam.com/video/5DSCWigEbOc/v-deo.html Hope that helps, and let us know if you have any other questions. Thanks for watching!
I have a 13' STI and having 4th gear issues. Car has a hard time going into 4th gear. All other gears are ok. Dealership already "corrected" the issue 20k miles ago, but it's coming back. Car is no longer under warranty. Question.. What would be better option? Pay to have transmission rebuilt or buy a 2017+ STI transmission with low miles for less than $3k?
Thanks for your question. Honestly, the first thing I would recommend is changing the fluid. The Subaru MT fluid is very good at helping with grinding issues: www.flatironstuning.com/subaru-high-performance-gear-oil-75w90 If that makes no difference/improvement, then the issue is most likely mechanical in the transmission. The decision to have your trans re-built versus buying a low mileage used trans is a tough one. You have a known quantity with your trans, but you are somewhat rolling the dice with a used trans. Hopefully it would work out, but you just never know. I hope that helps, and Stay Tuned!
Have you guys ever put an STI 6 speed into an automatic 2014 Forester XT? I'm assuming the trans would bolt up no problem as it is an FA20 motor, the same motor I have in my 2016 WRX. It seems like the more STI driveline parts you have (knuckle, axles, hubs, differential, etc.) the easier it would be. Am I accurate in saying that? Thanks for all the info.
Thanks for your question. We don't have any first hand experience there, but from what we know on the 15+ WRX, it is very similar to installing the 6-Speed into the 14 WRX, which is pretty straight forward. Lots of things like the axles and hubs, etc., can be kept. I hope that helps and Stay Tuned!
Previously wanted to swap 04 sti knuckles into my car but now learning that they still have the press in style wheel bearings is making me second guess. I have heard that they can never hold up to extended track use. Have you found this to be true? Would rather not have to swap my whole suspension to go with the 5x114 knuckles too much invested into it already.
Thanks for the question Frank. The STI bearings are larger than the WRX ones, which is a start, but I'd never say that they can't stand up to track use. As long as you keep an eye on them, and replace the bearings when they start to fail, rather than replace them when they are completely shot, you should be fine. It is more work with the press-in bearings to be sure, but after you do a few, it isn't that bad. Staying on top of them is the key. And yes, if you have wheels and suspension sorted, it doesn't make sense to start over completely for a simpler repair that will come up occasionally.
So just to verify, because I’m a little slow, with a 11wrx I can bolt rear STI axles no problem, along with the R180 diff. And the proper diff mount for it. Also, I would need a STI tranny mount( even if I have a group N aftermarket?) wrx axles in the front, and I get to keep the suspension the way it is, I know I’m pretty much repeating everything but I want to make sure I fully grasped everything. Just to confirm again I do have a 11 wrx
Can you do a video on good oil for the FA20DIT lol street and track. I just started using Molygen 5w30 in a bran new car/engine and could smell what I think is oil burning when givin her. Its also the first time im reving past 4000rpm. I don't wanna gunk up my engine and turbo. Not sure if I should go back to factory mobil 1. Thanks
Thanks for your question. Thanks for the suggestion. At some point we may do just that, so Stay Tuned! For now, we do have a blog that is related to your question, so that may be a good place to start. Here is a link to that: www.flatironstuning.com/blog/what-is-low-speed-pre-ignition Thanks for watching and Stay Tuned!
Thanks Malkionx, and we want to try that too. From what we have found so far, swapping an STI 6-MT into your WRX would be very similar to the 11 - 14 WRX. The good news is that it looks like it will not be too bad. Thanks for watching!
There really hasn't been a significant change in the STI transmissions in that range, so really any of those would do. Just remember that you would need the rear diff to go with it.
@@FlatironsTuning Would you need to also swap out the drive shafts as well as the axles? and from your experience whats the ballpark price range for all that work?
My input shaft bearing is going out on my 2008 Impreza 2.5. and if I need a new transmission how difficult is it to swap the stock 5-speed with a 6-speed of that year?
Thanks for your question. I'd recommend starting out with our video about that swap here: ua-cam.com/video/CieGYuOJQj4/v-deo.html Hope that helps, and Stay Tuned!
First thanks for all these informative videos. I will be doing bolt on upgrades to the bugeye when i get back from deployment: Tomei headers and catback, sti control arms, adjustable sway links cause i put king lift springs for a gravel setup. And I will gladly purchase from Flatirons Tuning (I already have the items bookmarked). looking at doing a 6 speed swap. While looking at the JDM 6 speed options I saw some have female splines and others with the male. My question is: are these output splines interchangeable? I found a good deal on a 6 speed kit with rear diff and drive shaft for under 3k. to keep the wrx axles and knuckles id need the male spline from trans. can I change the 6 speed output spline from female to male? thank you
Thanks for your question. If you have not found our GD video yet, I'd recommend starting there: ua-cam.com/video/nUJ7E2Bh5g0/v-deo.html We go into those exact details in that video. I hope that helps, and Stay Tuned!
Thanks for the question. Unfortunately not. The 6-Speed clutch and flywheel are larger than the 5-speed parts, so they will not fit in the 5-speed bellhousing without significant modification which can weaken it, etc. If you want a twin plate clutch, it is always best to get the one designed for the transmission housing you are using. Hope that helps and Stay Tuned!
awesome stuff how hard would it be to put a 2011 sti transmission in a 2005 sti thers not really any forums on this but im just curios what your thoughts are on older sti to newer sti part swaps?
Thanks for your question. If you go back through this video, there are issues with the speed sensor and rear R&P ratio that you would have to address. Beyond that, there is a different center differential in those two years, so the stock DCCD controller may not work properly with the newer transmission. Hope that helps and Stay Tuned!
Would this video be helpful for someone trying to put a 6 speed in a 99 SF forester? I eventually intend on putting an EJ202 or EJ207 to accommodate the transmission components
Thanks for your question. Yes, definitely. I would also recommend looking at our GD swap video as that will also give you a good picture of what it will take to swap a 6-speed into your Forester: ua-cam.com/video/nUJ7E2Bh5g0/v-deo.html Hope that helps and Stay Tuned!
oem subaru also have the rear rotor to run the subaru 2 pots with the r180 rear hubs. The gc8 type ra came standard with 2 pots and a r180 rear end running the larger handbrake.
Thanks Kaeros. That makes perfect sense as the GC STI's had the R180 diff, but still were still running the Subaru 2-Pots. We may have to see if that opens up any more good options for those rotors. Thanks for watching!
Thanks for your question. Basically, it is the same process as putting a 6-speed into the GD. Here is a link to that video: ua-cam.com/video/nUJ7E2Bh5g0/v-deo.html Hope that helps and Stay Tuned!
Great video! I’m doing a 06 sti trans swap In my 04 wrx, now I’m wondering if I have the right 06 sti trans that’s compatible with the rear diff. Any idea how I can find out if it’s from an early 06?
Thanks for your question. You need to verify the transmission serial number that is on the bell housing. That will tell you what you need to know. Here is the best chart that we have found: www.rallispec.com/downloads/Transmission%20ID%20Chart_Public.pdf Thanks for the question and Stay Tuned!
Another Great video! Heres a question, looking at the subaru transmission charts you will notice that the suretrac r180 was never paired with a dccd., do you know why that could be? Would it be dangerous, bad to pair a rear suretrac with a dccd and lsd front?
Thanks for your question Josh. That is an interesting one. I would say that you would not want to pair a torque biasing differential (which the Suretrac would fall under) with a front LSD (clutch type diff) in most cases in general. But the work fine if both front and rear are TBD's. I don't that a DCCD would have any negatives with a Suretrac rear, but I've never heard any reason why Subaru largely went away from them. It could be as simple as cost really... I hope that helps, and thanks for watching!
Thanks for your question. Take a look at the video that we did that goes into specific detail about the GD swap. If you have any questions after watching that video, reach out to us through our Live Chat on the site, and we'll do our best to help! ua-cam.com/video/nUJ7E2Bh5g0/v-deo.html Hope that helps and Stay Tuned!
Thank you..this video made me realize the 08-10 narrow body rear hub is really different..was all looking the same. I shoulda know it was going to easy ;) Thanks again for the info!
Would there be an issue with my R160 if I ran a JDM V9 STI transmission on my 02 wrx ? According to Rallispec the transfer reduction and final drive are the same as USDM 06 & 07 STI
Thanks for your question Luis. You just have to make sure that your Rear Ring and Pinion ratio is the same as what the transmission calls for. As long as it does, you will be fine. Thanks for watching!
Thanks for your question Cameron. I'll first say that you should look at the video that we did on the GD swap specifically. Here is a link to that: ua-cam.com/video/nUJ7E2Bh5g0/v-deo.html For the Wagon, the only difference is the track width. If you decide to run STI axles, you will need to widen your suspension to the Sedan width. Otherwise, if you are keeping your axles, and running your R160 diff, then they will work just as we describe in the video. I hope that helps, and thanks for watching!
Thanks for your question. You will definitely want to go through the transmission and rear differential ratios that we talk about at the end of this video. There aren't any STI's that have the same ratio as your 2007 WRX, so you will have to do something with your rear diff. Thanks for watching and Stay Tuned!
Thanks for your question. For a GC, the steps are basically the same as what we laid out in our GD section. You just have to make sure that the rear differential you use works with your transmission. ua-cam.com/video/nUJ7E2Bh5g0/v-deo.html I hope that helps and Stay Tuned!
For those that are looking for simpler. Look into the TY856B1CA trans from the Version 7 STi RA. It’s the only 6 speed Subaru made that was non DCCD but has the front and matching rear lsd.
Thanks for the comment Brandon! Yes, the very early 6-Speeds do remove the complexity of the DCCD. However, with a good controller like the MAP DCCD, the functionality that you get from the DCCD is pretty impressive. I my opinion, if you are going to go to the trouble of putting in the 6MT, you really want the functionality that the DCCD brings. Thanks for watching!
FlatironsTuning not knocking the DCCD at all. I just finished my swap a few weeks ago and it was just another cost and headache of wiring to deal with so I tried to avoid it. My suggestion was just something in the middle because the Spec B is open diff and usdm STis are dccd.
Thanks for your question. The basic answer is yes, but you have to make sure that the transmission will work with whichever rear differential you decide to go with, and depending on the year, the STI trans may not have a speed sensor, so you would need to deal with that as well. I hope that helps and Stay Tuned!
Physically there is no difference. Some of the JDM transmissions have different ratios (mainly 5th and 6th), and as always, you will have to make sure that the transmission you are getting will work with the rear differential you are using. Hope that helps, and thanks for watching!
Do you have any recommendation regarding the decision between the early DCCD with 35:65 torque split and the newer version with 41:59 torque split? As far as I know, the newer versions (2007+) have an additional mechanical LSD, but I'm not sure if this affects the vehicles handling in a positive or negative way. Subaru claims, that this mechanical unit makes the car more predictable to drive, but I always thought the big advantage of the DCCD would be that there's minimal load on the front tires when the controller completely unlocks the diff, resulting in optimal corner turn-in. Doesn't the mechanical LSD (even if it seems to have very low ramp angles) counteract this advantage? And what about the 6% difference in torque split, is this very noticible? I heard someone say that the 35/56 version is close to undriveable in open mode, but can it be worse than a rwd car? Sorry for this complex question, but i'm looking to do the swap in my legacy and i'm not sure which gearbox I should look for.
Thanks for your question. This is a question with a couple of levels of answer, so for now, I'll have to give you the high points, and you can contact us directly if you want to go into more detail. First, I'd base your choice for transmission around what is available, condition, mileage, etc., first, before I'd focus on the center diff function alone. All of the STI DCCD's work well, and though there are differences, they are not what I would focus on. The early STI transmissions (03-05) use a center diff that is open when no power is going to the DCCD just as you describe. If you want maximum rear bias, this may be a nice feature, but the newer transmissions behave almost the same. The bigger benefit to these early transmission is that they have an internal pump for better oiling of the transmission as a whole, and I'd say that this would be a more significant factor to push the decision to an early transmission. But of course, it would have to be in good shape as well. The later STI transmissions (2006+) started to incorporate a viscus coupling that works with the DCCD. So though you may not be able to get the same rear bias as you can with the early transmission, it is pretty close. Both new and older transmissions will feel mostly like rear-wheel drive cars with no power going to the center differential. But these later transmissions did away with the oil pump for lubrication (starting in 2007+) and went to a more standard sling-trough. This makes the transmissions simpler in some ways, but maybe not as ideal for very high power or Motorsports use as the earlier transmissions with the dedicated pump. So they both have some pluses and minuses. But any STI transmission will be very durable, and should work much better than any 5-speed would. Hope that helps, and thanks for watching!
Thanks for your advice. Since the car will remain mainly a daily driver and I do not intend to exceed the stock 280hp very much, the presence/absence of the extra oil pump may not be very important. I will follow your advice and focus on availability and condition.
Thanks for your question. The nut that you remove to change the flange is on the pinion shaft. We have always just torqued it back to spec, and haven't had any issues. So in our experience, it shouldn't make a difference there. But I suppose that ideally you would want to check the pinion depth after making the change. Thanks for watching and Stay Tuned!
Thanks for your question. There is no specific year that you would have to get. If you wanted to keep your rear diff (which wouldn't be ideal because it is an open diff), you would need an early STI trans (04-05). If you are going to be swapping out the rear diff for an R180, then it would only need make sure that the ratios of the diff and transmission match. If you haven't all ready, take a look at the other video that we made specifically about the GR swap as well. Here is a link to that: ua-cam.com/video/CieGYuOJQj4/v-deo.html Thanks for watching!
Thanks for your question Chris. Not yet. We have started to look into it a bit, and from what we can tell, it is very similar to the GR WRX. With the different final drive, you will need to replace the rear diff with one that matches the 6MT, but that seems to be the biggest hurdle. Hope that helps, and thanks for watching!
![[UA] NAVI проти G2 Esports | Blast Premier Fall Final](http://i.ytimg.com/vi/QWlIm4FGESQ/mqdefault.jpg)
You guys rock, such great distillation of a lot of 6 speed info!
Thanks for the comment! Coming from you all, that is high praise indeed :-)
You guys simply rock. Dispelling all the swap myths in one place....so great!!!
Thanks Javier, and thanks for watching!
Great video!!!!! This is thousands upon thousands and years upon years of threads on the internet into one video. You guys are great!
Thanks Toua, and thanks for watching!
This guy is a wizard
Thanks for the comment, and thanks for watching!
Whats a ballpark figure at the labor cost to do a 6 speed swap into a 2011 WRX if i were to source the parts?
Imported sti 6 speed will run u at least 3k for a good one and depends on the shop for labor tbh
I have an 04 wrx trying to swap to a 6 speed setup. Can I use 04 sti hubs, backing plate and parking brake if I already bought an 07 sti trans, driveshaft, diff, and axles? I don’t want to have to change my current suspension set up, I have the car sitting on tiens rn with its current setup.
Thanks for your question. The splines on the hubs are different between the 5x100 and 5x114.3 hubs so you do need axles to match.
Hope that helps and Stay Tuned!
Hi mate, I’ve put in a 6 speed DCCD into my gc8 v6 type ra (5 speed DCCD) but didn’t change the wiring harness to a 6 speed now my Speedo isn’t working, would you think the 6 speed wiring harness would fix this?
Thanks for your question. The speed sensor between the 5-speed and 6-speed transmission is the same. It also has its own harness and plug. I'd say it sounds like an electrical problem, or maybe the sensor got damaged in the transfer.
Make sure that everything is plugged in, and that the sensor is in good shape.
Hope that helps and Stay Tuned!
Does body style matter? I have a 11' WRX hatchback. I plan on doing an entire STI swap into it. Do I have to use parts from a 11'-14' STI hatch? Or can it be a sedan? Or can I use other years
Thanks for your question. As discussed at the end of this video, the narrow-body WRX's require a few different things compared to the wide-body WRX's.
Since you have a 2011 which is a wide-body, I'd recommend going through our video on the GR specifically as that will be the information that applies to your car:
ua-cam.com/video/CieGYuOJQj4/v-deo.htmlsi=9DN_nbdoGQBynT4_
Hope that helps and Stay Tuned!
Will a non dccd 05-08 JDM Legacy spec B 6spd work in a bugeye with stock r160? Looks to be 3.9fd 1.1tr. Says the jdm spec b even came with a r160 until 07?
Thanks for your question. You would just want to compare the rear Ring and Pinion ratio of what you have in the car to what the car that originally came with the 6-speed you are using had as discussed in the video.
Hope that helps and Stay Tuned!
I have a 2007 Subaru Forester XT and would like the benefits of having the STI 5x114 lug pattern what would entail a swap for that?? Is there any benefit from going with an STI suspension instead of the Forester suspension???
Thanks for your question. That is actually a fairly involved swap, which will require switching around brakes, etc. Really, generally speaking, it isn't worth making this conversion unless you know that you need teh 5X114.3 hubs for a specific reason.
Hope that helps and Stay Tuned!
I have a 2011 wrx hatchback... swapping In a 2008-14 sti fb-ty856ub1ka from Japan with the short gear ratio 50/50 tourque split with no dccd... but I'm having trouble with the wiring harness 6pin connector on the trans to the 4 pin on the car... should/can I still use the "Iwire adapter" to fix this? Even tho I dont have a dccd controller... also there is another 4 pin connector near the tail of the trams but I have nothing for it to plug into I'm not sure where it goes to or what it's for? Should I just cap it off... please help I'm awful with electrical
Thanks for your question. If you aren't comfortable with the wiring part, then yes, the iWire harness would be the best way to go as it makes the wiring plug and play.
www.flatironstuning.com/iwire-turbo-to-dccd-transmission-adapter
Hope that helps and Stay Tuned!
So to take all this in...I have a 05 wrx and if I choose install a sti 06-07 trans plug and play. Get the driveshaft and rear diff to bolt right in. Choice of wrx or sti flywheel clutch kit. I want keep stock brakes and suspension, so I can still run wrx axles ?
Thanks for your question.
Definitely take a look at our GD WRX 6-Speed video here:
ua-cam.com/video/nUJ7E2Bh5g0/v-deo.html
We go into all of those questions in these.
Thanks for watching and Stay Tuned!
Now if I were to swap in a 6 speed into my 11 wrx, and buy the I wire harness. Could I just connect the sti dccd like factory? Or do I need an aftermarket dccd controller
Thanks for your question. You would still have to run an aftermarket controller. The STI DCCD controller is on the STI CAN bus, so you would not only need the STI ECU, but everything on the CAN Bus that the DCCD controller needs to see to get it to work properly.
The aftermarket controller is the simpler solution by a mile.
Hope that helps and Stay Tuned!
My 06 sti was built in 10/05. Would that be considered late?
You would have to check the serial number on the transmission but most likely it is a 2005 spec transmission since it was built in 2005.
Hope that helps and Stay Tuned!
Hey man I’m doing a 04 sti swap in a 04 wrx and I was wondering we’re is the reverse light switch
Thanks for your question. The neutral and reverse switches are the two things that are plugged into the side of the transmission, and then the DCCD is driven by the wires that go to the back of the transmission.
Hope that helps and Stay Tuned!
So the WRX axles are compatible physically with an sti drivetrain?
You can just slide them into the cups on the differentials?
If that is the case one could get aftermarket uprated axles and install calipper adapters on the wrx hubs and you are set if you also get a big brake kit assuming youll be going for more than stock power?
I imagine stock axles will be fine for stock ish power and still have live left in them.
If that is the case that is genious and Ill be doing that when I do get to that bit on my SF5 turbo since most of the stock bits are virtually GC/GD wrx parts.
However Im going to keep the stock axles for a little bit and then get conservatively uprated aftermarket axles because something has got to give and Id rather blow an axle or two than a 6 speed. even if the 6 speed is a SOLID unit Id rather be safe than sorry. transmissions are expensive and a lot more work to repair or replace than some simple axles you just undo a couple bolts and a boot retainers and slide them out given the new axle is a complete unit with a cv joint ready to go.
I dunno it just seems like the easiest and simplest way instead of getting an entire STI suspension and fit it on the car and spend heaps of money on all those bits and then make them nice if they arent already in immaculate condition. its good to have options anyways.
Up front, yes, the WRX axles snap into the STI trans. This is not the case if you are using an R180 rear differential.
Keeping your WRX axles definitely makes the swap easier, and that is one of the reasons that we made this video. We wanted to let people know that there was an easier way to get the STI transmission installed compared to going with a complete STI driveline.
Thanks for watching and Stay Tuned!
Hi I have a 2006 subaru impreza wrx that I'm looking to do a full transmission swap in it. But im not sure what year I can buy. Thank you
Thank you for your question. You can use any STI transmission, you just have to make sure that it will work with the rear differential you use.
Hope that helps and Stay Tuned!
will I run into any major wiring issues when switching from 4 speed automatic 07 wrx wagon to the 6speed?
There is a bit of wiring involved there. Take a look at the auto to manual swap that Bucky did with iWire here:
ua-cam.com/video/eYlMLlRInps/v-deo.html
And you might want to check in with iWire about your specific model to see if there is anything else you need to do.
Thanks for watching and Stay Tuned!
What if you are going from an automatic to a manual transmission I have an 04 rs that I want to make a manual
Thanks for your question. You certainly could use a 6-speed for that conversion.
Thanks for watching and Stay Tuned!
Can you make a video or tell what the easiest sti 6 speed swap on my 2010 wrx hatchback I have adhd nd cant get it
Thanks for your question. We actually have a video all about GR swaps. Here is a link to that:
ua-cam.com/video/CieGYuOJQj4/v-deo.html
Between the information there, and the narrow-body info at the end of this video, you should have all the information you need.
The short answer is that it doesn't matter what year STI transmission you get, as long as the rear differential works with the transmission.
Thanks for watching and Stay Tuned!
Always a plethora of information! Thank you for taking the time to make these videos!!
Thanks Derrick, and thanks for watching!
The size difference between 5-speed and 6-speed is ridiculous. Sti trans is so beefy
Absolutely :-)
Thanks for watching and Stay Tuned!
I got a 98 Impreza rs. does this swap work with that car also? what is the cost on doing all of this?
Thanks for your question. Yes, the process is basically the same for the GC chassis as the GD chassis.
As to cost, there are a lot of variables in play there in terms of components.
To start with, you can look at our 02-03 WRX kit (which would be most applicable to the RS chassis), and build the kit out from there.
All of the parts that we work with are brand new, so they are more expensive than used, but you also know that they will not have any wear issues, etc.
www.flatironstuning.com/flatirons-6-speed-transmission-swap-package-02-03-wrx
Hope that helps and Stay Tuned!
But my car was scooped with a Automatic :-( Guess I gotta get a donor car.
That is definitely a bit more challenging of a place to start. Largely because of the need to replace the pedal box, but also because on the newer cars specifically, you have to address the ECU more as well when you take the automatic transmission away.
Thanks for watching and Stay Tuned!
So if I have the whole drivetrain system from and 08 sti and I want to install into a 09 narrow body will I have any issues with clearance?
Thanks for your question. We specifically talk about doing a 6-speed swap in a narrow body WRX in the video here:
ua-cam.com/video/uf4tcG5GqDU/v-deo.htmlsi=C8aQRNNLXMgiDKa1&t=755
That should answer any questions that you have.
Thanks for watching and Stay Tuned!
@@FlatironsTuning thank you for replying so quickly
At 14:00 you talked about running a 11-14 knuckle to fix the width issue could I not just use the 08 sti knuckle? Or are they different dimensions compared to the 11-14 knuckles
@@jesussandoval3713 they are the same. Just keep in mind that they push the rear wheels out 25mm per side.
So if I do this COMPLETE 6 SPEED SWAP
Parts included:
Transmission with crossmember
Shifter linkage
Driveshaft
All four axles
Rear differential
Starter
Flywheel
Pressure plate
All four hubs
And control arm everything will work ?
Thanks for your question. In addition to this FAQ video that we have, we also have videos on swapping the STI 6-Speed into either a GD WRX, or a GR WRX. Here are links to those:
ua-cam.com/video/nUJ7E2Bh5g0/v-deo.html
ua-cam.com/video/CieGYuOJQj4/v-deo.html
We go into detail there about what parts you need to swap out, and what you can keep, etc. I'd recommend going through the video that goes with your car, and if you still have questions after that, just let us know.
Thanks for watching and Stay Tuned!
@@FlatironsTuning can u just tell if that's the parts I need
I got the sti axles in the rear to fit for my narrow body and also still running wrx axles up front with the wrx hubs front and back. I keep blowing out my front wheel hubs. Is this because the sti axles in the rear are different in length?
Thanks for your question. That shouldn't have an effect on your front wheel bearings. What are you torquing your front wheel nuts to, and what tool are you using to tighten them?
Thanks for your reply!! A torque wrench. 0.005mm(0.0020 in) gap
Wheel bearing bolts are 47.9ft-lbs
Axle nut 162.3ft-lbs
what are the benefits? will it feel faster? Why not keep the 5 speed
Thanks for the question. The biggest gain is the durability of the 6-speed over the 5-speed transmission. But beyond that, one thing that is often overlooked are the differentials in the STI 6-speed. The front diff and electronic center diff make a world of difference.
Honestly, a big part of why the STI feels like it has so much more grip than a WRX out of the box comes down to those diff's that you get in the 6-Speed.
Hope that helps and Stay Tuned!
Can I utilize 07 wrx rear diff if I use 07sti transmission?
Thanks for your question. No, those are different ratios. I'd recommend going back to this video at 6:20 where we go into detail about the rear differential ratios as that should give you the information you need about this.
Thanks for watching and Stay Tuned!
Hello, Jon.
What about gearbox crossmember? GD wrx vs sti. Thanks!
Thanks for your question. We cover that swap in specific detail here:
ua-cam.com/video/nUJ7E2Bh5g0/v-deo.html&feature=shares
The short answer is that the transmission crossmembers ar the same.
Thanks for watching and Stay Tuned!
No, thank YOU for the priceless confirmation!
ive also noticed that the r180 rear diffs before the my06 sti that run the suretrak diffs have the smaller flange and the ones with the plated diffs run the larger flange. my06 and my07 stis had the larger flange.
Thanks for that Kaeros! We actually ran into exactly this with the parts that Tasso was using. Though his was a 2003 JDM drivetrain. My guess initially is that this was more on the JDM cars than the USDM cars, as this is the first time that we had seen that issue come up, so we'll have to do a little more investigating.
Thanks for watching!
Still kinda confused ? Can you use the wrx axle on the narrowbody and with what diff?
Thanks for your question Nick. I'd recommend going through the video again as those are topics specifically covered here.
If you want to go over your build plan, set up a consult with us here:
www.flatironstuning.com/6-speed-consultation
And we'll do our best to help you out.
Hope that helps and Stay Tuned!
@@FlatironsTuning thank you , will do and have a great day
So can i run a non dccd sti v7 transmission on my 2004 wrx ?
Thanks for your question. Yes, you can install a non-DCCD 6-speed. The process is basically the same.
Thanks for watching and Stay Tuned!
Help please I have a question is I have 03 sedan wrx doing v7 02-03 sti) 6speed swap Non DCCD has a 3.9 FD ratio. I’m using auto Impreza driveshaft and wanted to keep R160 hubs / axles. Will the 08-14 wrx r160 open diff 3.9 ratio bolt right up and snap into my current axles in rear. How should I proceed with my swap having issues finding R160’s with 3.9 ratios. Thank you !
Thanks for your question. Yes, that R160 will work because it is the correct ratio. Keep in mind it is an open diff, and you also have an open front too unless you have a type RA or Spec-C transmission. You will most likely want to address that at some point.
Hope that helps, and Stay Tuned!
FlatironsTuning thanks for reply! Yea I was thinking that diff won’t last longer will it matter due to v7 non dccd trans and rear diff being open will there be torque split issues? Will I be better if getting dccd v7 trans instead and not hooking up controller until I can afford one? Mind you this is going on 03 wrx sedan. Thank you!
@@itzzztoodah8203 The main thing that can come up with an open front and rear differential is your car is basically 2 wheel drive. One up front, and one in the rear. Since you don't have any traction control, etc., you can encounter a situation where the suspension articulates, and you lose drive.
Going into parking lot with a steep slope for instance. Or if you are ever driving in snow and ice.
In that case, using the DCCD controller to lock the center diff will help.
Overall, you just won't have the same feeling in the car as you would with a front TBD, and some kind of TBD or LSD in the rear.
But the car will still be completely driveable.
Hope that helps, and let me know if you have any other questions.
Doing one of these swaps now on an 03 wrx. Will the iwire harness work if he doesn't have a diff controller as of yet?
Thanks for your question. Yes, the iWire harness would still work. The lines from the DCCD would just not be connected, then when you are ready to get that working, the framework is there to connect to the DCCD controller of your choice.
Hope that helps, and Stay Tuned!
@@FlatironsTuning thank you so much!
So is the Neutral Safety switch the same on both the 07 STI and 02 WRX? I can't remember whether I used the WRX or STI, but now that I have everything back together, I'm having issues with my idle. I've already replaced the IACV with a new OEM one, adjusted the throttle cable and did a smoke test, but I'm still having issues. I'm suspect it might be the safety neutral switch. Thanks.
Sti 6 speed box screw location all pnp into 5 speed ej20 forester?
Thanks for your question. Yes, you can swap a 6-speed into an Ej20 Forester.
Thanks for watching and Stay Tuned!
@@FlatironsTuning ic.. How about avcs head? I just wondering if v8 avcs head can use on my 1999 forester ej20 block, will be save a lot buying sti motor
I have an 09 wrx would I have to change anything on the front to change the rear diff, and axles to an sti
Thanks for your question. As long as the R180 works with your WRX transmission, you wouldn't have to change anything with the transmission or front axles.
Thanks for watching and Stay Tuned!
@@FlatironsTuning alright so in order for me to change the rear diff an axles I do need rear sti knuckles?
My clutch master cylinder started to fail on my 2004 Subaru TS. I went to a parts shop to get both the master and slave cylinder. When I got home I noticed the parts didn't fit my car. When I went back with the old parts off my car the guy told me the parts where for a WRX STI. I bought the car at auction and no nothing about it's history. It runs great, I've been driving it since last year. I've never tried shifting the car into six gear ever. Maybe at one point they used the same master and slave setup but why? Anyone have any clues?
Thanks for your question Lewis. For the Master cylinder, there hasn't been much change in those. For the slave, of course the clutch type makes a big difference. If you have a 2004, you should have a pull-style clutch. Most of the pull style clutches have similar slave cylinders, but there have been some changes over the years.
Good luck getting your clutch working again, and thanks for watching!
I want to do an automatic 2003 wrx to a sti 6 speed manual transmission if that's possible, and if not then what is the most reliable 6 speed I can put into my car is there anyone I can talk to about this. How new of a transmission doesn't matter I just want to know what is the best transmission I can put into my car that'll last me and be as reliable as possible I want to be able to race my car sometimes but it'll mostly me a everyday driver so I need it to not die anytime soon
Thanks for your question. The biggest hurdle for you is going to be adding that third pedal. But yes, it can be done. It will be easier to start with a MT car for what it is worth.
As to what the best year 6-speed is for a swap, we have that covered here:
ua-cam.com/video/vI19RFeXics/v-deo.html
Thanks for watching and Stay Tuned!
@@FlatironsTuning thanks for your reply it's my project car that's the only reason I don't want to get a car that's already MT
@@FlatironsTuning do you have a parts list for the 07sti 6speed swap into a automatic 03wrx or know where I can find one I have checked online but haven't had any luck
I really need your help I have a 2007 wrx and I want to do an sti swap. and I also will switch the clutch kit and the suspension to sti is there anything more I have to do and also. I have found some sti transmissions but I can't find the number anywhere when I look it up the article numbers on the 2 I have found is these 2: TY856UG1MA TY856UG9AA so I'm not sure is these will fit at all
What about STI swapping a 2004 Forester? Is it the same?
Thanks for your question. It is mostly the same, but there are a couple small differences. The biggest is the driveshaft. The issue is due to the body-lift that the Forester has. Going with a 1-piece driveshaft will make the swap much easier. If you want to stay with a stock driveshaft, it would have to be from a Forester automatic to get the height correct.
And you will need a rear diff because of the different ratio of the Forester XT manual (4.44:1).
Hope that helps and Stay Tuned!
@@FlatironsTuning thanks
Hey, do you guys know if SG9 STi forester 6 speed complete drivetrain bolts into GD WRX chassis? rear hubs, front hubs, axles, etc.
Love the video and appreciate the insight. I do have a question though. I know the 11+ have adjustable differentials settings and the likes with their electrical systems. How do those translate or are they completely disabled in the swap?
So up front of car. I have an 09 all I would have to change to is a 2011+ swingarm to run sti driveshaft?
What's up guys, I am new to subaru. I have a 2005 outback wagon N/A, 5 speed. I need a little more, can I get a wrx 5 speed, will the outback axles work or do I have to get a diff too?
Thanks for your question. You wouldn't want to do that the WRX gearing is much taller because the turbo engines make more torque than the NA cars. If you put that trans in your NA outback, the car would feel a lot slower most likely.
Hope that helps and Stay Tuned!
@@FlatironsTuning Im thinking about doing a 6 speed from a gen 4 liberty into my 03 wrx wagon
I saw some guy claim online the shafts are only 2mm or so longer
do you know if you can get away with sti shafts? my wrx has the female to trans cv axles so they definitely will not be usable
@@Puma6922 The 6-Speed from the Liberty/Legacy is completely different from the STI 6-speed, and as far as I know, there is no axle that will work with your GD knuckles and that transmission.
@@FlatironsTuning it's a ty856 with a 3:54 ratio, came fitted to 2.5t sti spec liberties and 3.0 h6's here. maybe something you guys didn't get in the states
Great videos. We have a 2013 wrx. We were going to buy a 08-14 jdm 6 speed but ended up buying a wrecked 13 sti for the transmission/suspension. What are the differences between jdm and US trans? Thanks
I have a 2005 sti trans. I have a 2004 wrx car. I'm keeping the r160 rear diff. Do I need to have the dccd controller and Iwire?
Thanks for your question. You don't absolutely have to put in a DCCD controller, but it will really let you get the maximum benefit from putting in the 6-speed. You can use the iWire adapter to make the wiring plug and play, but swapping the 5-speed wiring over isn't too bad either.
With no diff controller, the transmission will be in the default setting which is maximum rear bias.
I will say that your R160 will not worth with a 2005 STI transmission though. I'd recommend making sure that you have a compatible rear differential before you start working on the swap.
Hope that helps and Stay Tuned!
The 2004 wrx rear diff r160 has a final drive of 3.90 which is the same for the 2004-2005 STI. That's what I've read up on and that's what your video said as well. So are you telling me the 2005 STI trans doesnt work with the r160 3.90FD?
ua-cam.com/video/nUJ7E2Bh5g0/v-deo.html
In here you say you can swap a 2004-2005 STI in a 2002-2005 wrx with no issues. It's the easiest and cheapest why to do it. Is that not the case now?
@@waltersjiu-jitsumoreheadci1080 Take a look at the video here where we go into detail on this:
ua-cam.com/video/uf4tcG5GqDU/v-deo.html
But the short answer is that no, the 2004 WRX rear diff, and the 2005 STI transmission are not compatible.
Thanks, and Stay Tuned!
2006 Subaru wrx, I think I understand I can run;
06 sti trans
Auto drive shaft
R160 rear diff
Existing 5 speed clutch
Existing wrx drive shafts, brakes, suspension etc.??
Thanks for your question Jordan. You are close. The year of the STI transmission isn't that important. It will just have to match the R&P ratio of the R160 diff you use, as yours will not work with any STI transmission. You can't keep your clutch because starting in 2006, all of the WRX's got a push-style clutch which is not compatibly with the STI transmission.
Good luck with your swap, and make sure that you check out the first video that we did on the GD swap too:
ua-cam.com/video/nUJ7E2Bh5g0/v-deo.html
Good luck with your swap!
FlatironsTuning thanks so much for the reply, helps a lot! So to confirm I can use the following parts;
Sti Transmission & clutch with flywheel
Auto drive shaft
R160 that matches the gearbox ratios (what year r160 diff will match?)
And that’s all I need?
Those are definitely the high points. Hopefully this video and the one that we made specifically on the GD swap will be a good resource for you.
ua-cam.com/video/nUJ7E2Bh5g0/v-deo.html
If you have any questions, or if you need any parts, etc., don't hesitate to reach out.
So I take it you are talking about North American 6spds and the JDM 6spds.
Thanks for your question. Since most of what we deal with and can get are the USDM 6-Speeds, yes, that is what we are focusing on for these videos.
Thanks for watching, and I hope that helps.
Excellent video! Can you possibly do a vid for the 08-09 LGT for swapping the STI 6-speed with DCCD?
Thanks for the question Brian. Basically, it is the same as the 08-14 WRX video that we did:
ua-cam.com/video/CieGYuOJQj4/v-deo.html
Since there is a Spec-B to refer too as well, that is a fairly straight forward swap.
I hope that helps, and Stay Tuned!
Hah, a year later I just realized this video came out very close to the date my 3rd gear (5spd) shredded.
This is very informative. Thanks for taking the time to make these videos.
I have a question though. I'm currently considering putting an sti 6 speed into my 2011 gve/g3 wide body wrx as my 5 speed has blown synchro's and might not be worth rebuilding. I've been trying to find out exactly which sti boxes will bolt straight up but I keep coming up short. I've been told that a sti box from the same year will work, but I will need a sti shifter linkage, shifter surround and a tail shaft. If you can offer some advice or guide me to the right place to look it would be greatly appreciated. I've spent many hours on forums trying to find answers to suit my model wrx but can't seem to find concrete information. Your videos seem to be the most accurate information I've found, Thanks again and great work. Looking forward to your next videos!
MY04-MY05 STi transmission would allow you to keep your rear diff (r160) as they are both 3.9:1 gear ratios. Otherwise, you'll have to swap the rear diff (r160 to r180) and the transmission together (from the same year/code STi).
You will still need the shifter linkage and all the other wiring he mentions in the video. Clutch and flywheel from the STi also, along with the clutch fork and slave cylinder from the STi (push vs. pull). The slave cylinders might be the same, I'm not sure, but I would think you might need the longer pressure line from the clutch master cylinder to the slave cylinder in any case.
Thanks for your question Dose. The reply below pretty much covers your question. Thanks for that Sam!
I will add that you want to keep in mind that you have an open rear diff. If you do keep your R160, that can cause some odd behavior from the drivetrain, as it is far less than ideal considering you are getting a DCCD center diff and TBD front diff with the 6-Speed. This is especially true without a controller, but either way, that open diff in the back is an issue that you will want to address at some point.
For that reason, it may be better long term not to be too attached to that, and look at other options. A 2002 - 2005 diff will have a viscus diff, but at this point, most of them will have lots of miles on them, and that viscus coupling is most likely not in great condition. This is why in our car, we just went to the STI R180 because it has a TBD to match the front in the STI transmissions, and since you have a wide-body WRX, all you need are STI axles.
Lastly, you will need a slave cylinder with the STI transmission. The slave cylinder is not interchangeable between pull and push style transmissions, but your master cylinder will work just fine.
Hope that helps, and good luck with your swap!
@@FlatironsTuning if the spline count on the R180 are the same as the R160, can you just use the WRX axles until you can afford also getting STi axles?
@@nekidfrog The spline count on the differential is not the same. That is why you have to use a different axle if you are going to run the R180 differential.
Hope that helps and Stay Tuned!
All the little bits of information are really helpful. I’m in the process of putting an 04STI trans in my auto 05 wrx.
Thanks Andres, and thanks for watching! Converting from an Auto is a lot more work. Good luck with the swap!
I love all the information available in your videos. I’m doing a mild build on the EJ257 and looking for as much information as I can for the trans swap. Keep up the great videos!
Thanks Andres. Will do!
I have a 2004 wrx the engine just got rod knock at 230000 miles. I have 8k saved up to play with so far but I wanted to get a good guesstemet on what it is that ima need to have a engine that can handle 700 hp but have it tuned/built to 550hp-650hp. I care about the price as long as I don't spend more than 50k usdm that's my limit. Any ideas on what kinda build I might get for $50,000? Btw none of that is for looks only for engine, transmission, air ride race suspension, brakes, rims/tires, handling, turbo, ecu, fuel system...intercooler, air oil separate basically anything under the hood, under the body, idk if anyone gets me.
Thanks for your question Branden. For that specific a topic, I'd definitely recommend reaching out to us directly. Live chat on flatironstuning.com, or give us a call. We can work with you to figure out what your best options are.
Thanks for watching and Stay Tuned!
Great vid, and I have a question! Found an 04 JDM Forester STi transmission that I want to mate to my USDM GR WRX's R160 with a 1.5 Way LSD I installed in it. Since the Fozzy 6-spd has the 1:1 and 3.90 specs in theory it sounds like it should link to my WRX R160 fine and therefore I can avoid new axles. Any concerns however still running my upgraded WRX R160 with this Fozzy transmission that's non-DCCD but also had a non-Open front diff? The Fozzy STi 6-spd paired with AP SureTrac Front diff, and I know my GR WRX has an open front diff.
Thanks for your question. Yes, as long as your rear differential has the correct ring and pinion ratio for the transmission you are running, it will work just fine.
As far as pairing of differentials, there is no issue running a rear clutch type differential, and a front torque biasing differential. That should work well for most applications.
Hope that helps and Stay Tuned!
@@FlatironsTuning Appreciate the quick reply! Which DSS would be the proper one to link this Fozzy STi transmission to my WRX r160? www.flatironstuning.com/dss-carbon-fiber-driveshaft-wrx-sti .. actually I think I answered my question already and it's part SUSH12-C. If that's right, then with this shaft I will not need to buy a different rear differential flange?
@@paterick4o8 If you have a 2004 - 2008 Forester XT, you need the SUSH6-C. That is for the 6-Speed conversion with R160 rear diff.
Thanks for the question!
@@FlatironsTuning Hmm.. My car is a 2012 WRX, and throwing in a Forester STi trans TY856WL4CC.. it sounds more like it would be the SUSH12-C shaft to fit this to my 2012 WRX R160?
@@paterick4o8 Gotcha, sorry, I got confused with the Forester trans. If you have a 12 WRX, then you need the SUSH12-C as you had previously.
This video has me very excited! I was debating on selling my 13 hatch wrx and looking for a a Sti hatch but if the parts are interchangeable this looks better to do. My question is can 6 speed be done to the stock ej 255 engine the wrx comes with? Thanks!
Thanks for your question. Yes, absolutely! The EJ series bellhousings are the same so you can bolt up the STI 6-speed no problem.
Thanks for watching and Stay Tuned!
I have a 2007 WRX wagon, and want to swap a full STI drivetrain, 6 spd, axles, driveshaft, hubs, r180, and suspension. Is that possible? Are there any differences between the sedan and wagon body/frame that would cause a conflict?
Thanks for watching. The only difference is that the GD wagon is 10mm shorter track on each side. So you would have to run the STI lower control arms and lateral links to be able to use the STI axles, etc.
The simplest path would be to stick with the WRX axles up front and the Driveshaft Shop conversion axles in the rear so that you can keep your hubs and suspension components.
I hope that helps, and Stay Tuned!
Swapping 08-14 sti 6 speed into my 08 wrx, could I pair the 6 speed and r180 with the 08-14 STI Driveshaft?
Thanks for the question Nick. Yes, if you are using an R180, that would be the driveshaft you would need.
Thanks for watching!
One last question for ya, so I have an 08 wrx, for the 6 speed swap from an 08-14 sti do I need to do anything to the pedal assembly?or is my stock wrx pedal assembly just fine?
@@nickfishburn4962 Thanks for the question. As long as your WRX is a manual, you don't need to do anything with the pedal box.
Thanks for watching!
I’m doing the swap into an 09 wrx. How did your swap turn out?
Chad Harrison I couldn’t have come out any better! The shop I took it to looked at me as If I was crazy. Told them every part that was needed and they agreed todo it. Then they call me when it’s all finished saying it works like oem and they couldn’t believe it. It’s now been over a year since the swap with about 15k miles on this setup. Runs flawless
If I wanted to use a JDM Ver7 transmission on a USDM 2003 WRX what exactly would I need to change? I’m thinking of buying a JDM Ver7 trans and most come with a rear diff and JDM wiring.
Thanks for your question. I'd recommend going through our GD specific video. That one, with the FAQ video here has all of the information you should need.
ua-cam.com/video/nUJ7E2Bh5g0/v-deo.html
Stay Tuned!
i have a 2001 wrx bugeye want to buy s202 donor for 6 speed swap, can it be done only the gearbox and the prop shaft? because
i see the s202 has 5x114 hub and i don't want to replace my new coilover on a 5x100 hub. any suggestion? tq
Thanks for your question Lev. We talk about that a bit at the end of this video, but we have a detailed video on putting a 6-speed in a GD that goes into more detail about your specific question. here is a link to that:
ua-cam.com/video/nUJ7E2Bh5g0/v-deo.html
Hope that helps and thanks for watching!
Hi I just need some reassurance on my end to make sure my research is correct. If anyone has experience please feel free to chime in.
So I have a 2011 WRX with a 5 speed in it. I plan on picking up a 05 Sti 6 speed swap for a killer deal. So essentially everything should be plug n play since I won’t be running the dccd controller.
I’ll need:
- 05 Sti 6 speed
- front wrx axles (keeping 5x100 bolt pattern for now)
- Sti drive shaft (will the 05 drive shaft be the same length as wrx, since I have the hatch)
- Sti clutch assembly ( I heard I’ll need extra flywheel bolts since wrx uses 6 and Sti uses 9)
- 05 r180 rear diff
- 05 Sti rear axles
- 05 transmission mount
- 05 rear diff mount
- 05 Sti starter
Anything else am I missing? Or anything wrong with what I provided? Thanks for the help!
Thanks for your question. I'd recommend that you go through this video again, and also take a look at our GR specific swap video.
ua-cam.com/video/CieGYuOJQj4/v-deo.html
If you have any questions after that, feel free to reach out to us through the chat feature on our web-site.
Thanks for watching and Stay Tuned!
You can also have the 2012 and later 6 speed trans machined to accept the speed transducer. It's a relative cheap and straight forward job, you just remove the front diff housing and take it to your machinist.
I am looking to put in an offer on a good deal for an 18’ sti. I want to swap the motor into my 06’ sti. May as well swap everything I can. Is this going to be expensive as far as missing for things to fit? I’m going to have help for the swap, but they haven’t worked on Subaru’s much. Just older cars. I am researching everything I can to make the job easier, if at all possible. What do you recommend? Edit: The 18’ sti is wrecked. Tires, rims, brakes, discs, tranny, engine, all pristine. Except the impact on the passenger side.
Best of luck with the swap, and hopefully our videos are a good help to you! If you need any parts, etc., feel free to reach out.
Thanks for watching and Stay Tuned!
What you mean 07 transmission, is it V7 or V9?
So if I swap a 2013 STi 6-speed into my 2014 WRX. Long as I use the matching rear diff from that 2013 I can use my front and rear axles into the 2013 6-speed and rear diff?
Thanks for your question. Up front, yes, your WRX axles would work, but in the rear, you would need the STI axles to run the R180 rear diff. The splines are different for the R180.
Hope that helps and Stay Tuned!
great video.
I have 2006 sti. engine swapped to 2003 ej205 and standalone ecu. currntly my DCCD is not working with ej205. while its working with the ej257.
how I can keep the dccd working with the ej205?
also what is the other things that I need to look into for this kind of engine swap?
Thanks in advance
Thanks for your question. All you need to get the DCCD working is a separate controller. We like the MAP-DCCD controller, and we keep them in stock :-). Here is a link to our video explaining how that works:
ua-cam.com/video/5DSCWigEbOc/v-deo.html
Hope that helps, and let us know if you have any other questions.
Thanks for watching!
I have a 13' STI and having 4th gear issues. Car has a hard time going into 4th gear. All other gears are ok. Dealership already "corrected" the issue 20k miles ago, but it's coming back. Car is no longer under warranty. Question.. What would be better option? Pay to have transmission rebuilt or buy a 2017+ STI transmission with low miles for less than $3k?
Thanks for your question. Honestly, the first thing I would recommend is changing the fluid. The Subaru MT fluid is very good at helping with grinding issues:
www.flatironstuning.com/subaru-high-performance-gear-oil-75w90
If that makes no difference/improvement, then the issue is most likely mechanical in the transmission.
The decision to have your trans re-built versus buying a low mileage used trans is a tough one. You have a known quantity with your trans, but you are somewhat rolling the dice with a used trans. Hopefully it would work out, but you just never know.
I hope that helps, and Stay Tuned!
Have you guys ever put an STI 6 speed into an automatic 2014 Forester XT? I'm assuming the trans would bolt up no problem as it is an FA20 motor, the same motor I have in my 2016 WRX. It seems like the more STI driveline parts you have (knuckle, axles, hubs, differential, etc.) the easier it would be. Am I accurate in saying that? Thanks for all the info.
Thanks for your question. We don't have any first hand experience there, but from what we know on the 15+ WRX, it is very similar to installing the 6-Speed into the 14 WRX, which is pretty straight forward. Lots of things like the axles and hubs, etc., can be kept.
I hope that helps and Stay Tuned!
Can you use either a jdm or USDM Sti transmission?
Thanks for your question. Yes, you can use either one.
Previously wanted to swap 04 sti knuckles into my car but now learning that they still have the press in style wheel bearings is making me second guess. I have heard that they can never hold up to extended track use. Have you found this to be true? Would rather not have to swap my whole suspension to go with the 5x114 knuckles too much invested into it already.
Thanks for the question Frank. The STI bearings are larger than the WRX ones, which is a start, but I'd never say that they can't stand up to track use. As long as you keep an eye on them, and replace the bearings when they start to fail, rather than replace them when they are completely shot, you should be fine.
It is more work with the press-in bearings to be sure, but after you do a few, it isn't that bad. Staying on top of them is the key.
And yes, if you have wheels and suspension sorted, it doesn't make sense to start over completely for a simpler repair that will come up occasionally.
So just to verify, because I’m a little slow, with a 11wrx I can bolt rear STI axles no problem, along with the R180 diff. And the proper diff mount for it. Also, I would need a STI tranny mount( even if I have a group N aftermarket?) wrx axles in the front, and I get to keep the suspension the way it is, I know I’m pretty much repeating everything but I want to make sure I fully grasped everything. Just to confirm again I do have a 11 wrx
Hello Marco. Yes on all counts. Sounds like you have it all straight.
Thanks for watching!
Thanks so much, keep being awesome and posting awesome videos!!! So helpful!!
Can you do a video on good oil for the FA20DIT lol street and track.
I just started using Molygen 5w30 in a bran new car/engine and could smell what I think is oil burning when givin her. Its also the first time im reving past 4000rpm.
I don't wanna gunk up my engine and turbo. Not sure if I should go back to factory mobil 1.
Thanks
Thanks for your question. Thanks for the suggestion. At some point we may do just that, so Stay Tuned!
For now, we do have a blog that is related to your question, so that may be a good place to start. Here is a link to that:
www.flatironstuning.com/blog/what-is-low-speed-pre-ignition
Thanks for watching and Stay Tuned!
Would love to do this in my 17 wrx
Thanks Malkionx, and we want to try that too. From what we have found so far, swapping an STI 6-MT into your WRX would be very similar to the 11 - 14 WRX. The good news is that it looks like it will not be too bad.
Thanks for watching!
FlatironsTuning sweet so would you reccomend a newer sti transmission(15-17) or 11-14 One.
There really hasn't been a significant change in the STI transmissions in that range, so really any of those would do. Just remember that you would need the rear diff to go with it.
@@FlatironsTuning Would you need to also swap out the drive shafts as well as the axles? and from your experience whats the ballpark price range for all that work?
@@alejandrorodriguez6780 Yes, you do need a different driveshaft. The STI driveshaft is a few inches shorter than the 5-speed.
My input shaft bearing is going out on my 2008 Impreza 2.5. and if I need a new transmission how difficult is it to swap the stock 5-speed with a 6-speed of that year?
Thanks for your question. I'd recommend starting out with our video about that swap here:
ua-cam.com/video/CieGYuOJQj4/v-deo.html
Hope that helps, and Stay Tuned!
First thanks for all these informative videos. I will be doing bolt on upgrades to the bugeye when i get back from deployment: Tomei headers and catback, sti control arms, adjustable sway links cause i put king lift springs for a gravel setup. And I will gladly purchase from Flatirons Tuning (I already have the items bookmarked). looking at doing a 6 speed swap. While looking at the JDM 6 speed options I saw some have female splines and others with the male. My question is: are these output splines interchangeable? I found a good deal on a 6 speed kit with rear diff and drive shaft for under 3k. to keep the wrx axles and knuckles id need the male spline from trans. can I change the 6 speed output spline from female to male? thank you
Thanks for your question. If you have not found our GD video yet, I'd recommend starting there:
ua-cam.com/video/nUJ7E2Bh5g0/v-deo.html
We go into those exact details in that video.
I hope that helps, and Stay Tuned!
can 6spd twin plate use in wrx 5spd?
Thanks for the question. Unfortunately not. The 6-Speed clutch and flywheel are larger than the 5-speed parts, so they will not fit in the 5-speed bellhousing without significant modification which can weaken it, etc.
If you want a twin plate clutch, it is always best to get the one designed for the transmission housing you are using.
Hope that helps and Stay Tuned!
@@FlatironsTuning but v789 6spd gearbox can swap into v5 ej20 right?
@@devil_samuraix6176 Yes, that is correct.
awesome stuff how hard would it be to put a 2011 sti transmission in a 2005 sti thers not really any forums on this but im just curios what your thoughts are on older sti to newer sti part swaps?
Thanks for your question. If you go back through this video, there are issues with the speed sensor and rear R&P ratio that you would have to address.
Beyond that, there is a different center differential in those two years, so the stock DCCD controller may not work properly with the newer transmission.
Hope that helps and Stay Tuned!
Would this video be helpful for someone trying to put a 6 speed in a 99 SF forester?
I eventually intend on putting an EJ202 or EJ207 to accommodate the transmission components
Thanks for your question. Yes, definitely. I would also recommend looking at our GD swap video as that will also give you a good picture of what it will take to swap a 6-speed into your Forester:
ua-cam.com/video/nUJ7E2Bh5g0/v-deo.html
Hope that helps and Stay Tuned!
Hello, what Is the actual weight of a 6 Speed gearbox only? Need the info to organize my self for the swap!
Thanks for your question. It is right about 225 lbs.
oem subaru also have the rear rotor to run the subaru 2 pots with the r180 rear hubs. The gc8 type ra came standard with 2 pots and a r180 rear end running the larger handbrake.
Thanks Kaeros. That makes perfect sense as the GC STI's had the R180 diff, but still were still running the Subaru 2-Pots. We may have to see if that opens up any more good options for those rotors.
Thanks for watching!
Have you guys made a video on 6 speed swap for GCs?
Thanks for your question. Basically, it is the same process as putting a 6-speed into the GD. Here is a link to that video:
ua-cam.com/video/nUJ7E2Bh5g0/v-deo.html
Hope that helps and Stay Tuned!
Yep...your videos are awesome. Always super helpful.
Thanks for that, and thanks for watching!
Great video! I’m doing a 06 sti trans swap In my 04 wrx, now I’m wondering if I have the right 06 sti trans that’s compatible with the rear diff. Any idea how I can find out if it’s from an early 06?
Thanks for your question. You need to verify the transmission serial number that is on the bell housing. That will tell you what you need to know.
Here is the best chart that we have found:
www.rallispec.com/downloads/Transmission%20ID%20Chart_Public.pdf
Thanks for the question and Stay Tuned!
Another Great video! Heres a question, looking at the subaru transmission charts you will notice that the suretrac r180 was never paired with a dccd., do you know why that could be? Would it be dangerous, bad to pair a rear suretrac with a dccd and lsd front?
Thanks for your question Josh. That is an interesting one. I would say that you would not want to pair a torque biasing differential (which the Suretrac would fall under) with a front LSD (clutch type diff) in most cases in general. But the work fine if both front and rear are TBD's. I don't that a DCCD would have any negatives with a Suretrac rear, but I've never heard any reason why Subaru largely went away from them.
It could be as simple as cost really...
I hope that helps, and thanks for watching!
would i need axles/hubs/brakes/ if i did 2004 sti transmission swap into my 2006 wrx?
Thanks for your question. Take a look at the video that we did that goes into specific detail about the GD swap. If you have any questions after watching that video, reach out to us through our Live Chat on the site, and we'll do our best to help!
ua-cam.com/video/nUJ7E2Bh5g0/v-deo.html
Hope that helps and Stay Tuned!
Thank you..this video made me realize the 08-10 narrow body rear hub is really different..was all looking the same. I shoulda know it was going to easy ;) Thanks again for the info!
Thanks for the comment, and thanks for watching!
Would there be an issue with my R160 if I ran a JDM V9 STI transmission on my 02 wrx ? According to Rallispec the transfer reduction and final drive are the same as USDM 06 & 07 STI
Thanks for your question Luis. You just have to make sure that your Rear Ring and Pinion ratio is the same as what the transmission calls for. As long as it does, you will be fine.
Thanks for watching!
Awesome thanks 👍
What's different if you're swapping an 02 wrx wagon?
Thanks for your question Cameron. I'll first say that you should look at the video that we did on the GD swap specifically. Here is a link to that:
ua-cam.com/video/nUJ7E2Bh5g0/v-deo.html
For the Wagon, the only difference is the track width. If you decide to run STI axles, you will need to widen your suspension to the Sedan width. Otherwise, if you are keeping your axles, and running your R160 diff, then they will work just as we describe in the video.
I hope that helps, and thanks for watching!
I would like to mount 2001 sti 6 Speed on a 2007 wrx. Does the engine starter motor has to be changed?
Thanks for your question. You will definitely want to go through the transmission and rear differential ratios that we talk about at the end of this video. There aren't any STI's that have the same ratio as your 2007 WRX, so you will have to do something with your rear diff.
Thanks for watching and Stay Tuned!
What about 6speed swaps in 90s Impreza’s?
I’m planning on doing this on my 98 Subaru Impreza outback.
Thanks for your question. For a GC, the steps are basically the same as what we laid out in our GD section. You just have to make sure that the rear differential you use works with your transmission.
ua-cam.com/video/nUJ7E2Bh5g0/v-deo.html
I hope that helps and Stay Tuned!
@@FlatironsTuning omg thank you!!!!
Great video as always,
one note the gravel rotors came OEM on STI V6 RA(and 22B) it had 2 pots and an R180 Rear end, and can be purchased from Japan
Thanks for watching and thanks for the note!
For those that are looking for simpler. Look into the TY856B1CA trans from the Version 7 STi RA. It’s the only 6 speed Subaru made that was non DCCD but has the front and matching rear lsd.
Thanks for the comment Brandon! Yes, the very early 6-Speeds do remove the complexity of the DCCD. However, with a good controller like the MAP DCCD, the functionality that you get from the DCCD is pretty impressive.
I my opinion, if you are going to go to the trouble of putting in the 6MT, you really want the functionality that the DCCD brings.
Thanks for watching!
FlatironsTuning not knocking the DCCD at all. I just finished my swap a few weeks ago and it was just another cost and headache of wiring to deal with so I tried to avoid it. My suggestion was just something in the middle because the Spec B is open diff and usdm STis are dccd.
So for my bugeye I can run any ear 6speed sti transmission? If I get a driveshaft, and ddcd controller and iwire cables ?
Thanks for your question. The basic answer is yes, but you have to make sure that the transmission will work with whichever rear differential you decide to go with, and depending on the year, the STI trans may not have a speed sensor, so you would need to deal with that as well.
I hope that helps and Stay Tuned!
Great video! Time to start saving and buying parts and watching and rewatching and watching this video again.
Glad we could help, and thanks for watching. Stay Tuned!
What difference would there be if I were to use a JDM transmission instead of a USDM when swapping to a 6mt?
Physically there is no difference. Some of the JDM transmissions have different ratios (mainly 5th and 6th), and as always, you will have to make sure that the transmission you are getting will work with the rear differential you are using.
Hope that helps, and thanks for watching!
Do you have any recommendation regarding the decision between the early DCCD with 35:65 torque split and the newer version with 41:59 torque split? As far as I know, the newer versions (2007+) have an additional mechanical LSD, but I'm not sure if this affects the vehicles handling in a positive or negative way. Subaru claims, that this mechanical unit makes the car more predictable to drive, but I always thought the big advantage of the DCCD would be that there's minimal load on the front tires when the controller completely unlocks the diff, resulting in optimal corner turn-in. Doesn't the mechanical LSD (even if it seems to have very low ramp angles) counteract this advantage? And what about the 6% difference in torque split, is this very noticible? I heard someone say that the 35/56 version is close to undriveable in open mode, but can it be worse than a rwd car? Sorry for this complex question, but i'm looking to do the swap in my legacy and i'm not sure which gearbox I should look for.
Thanks for your question. This is a question with a couple of levels of answer, so for now, I'll have to give you the high points, and you can contact us directly if you want to go into more detail.
First, I'd base your choice for transmission around what is available, condition, mileage, etc., first, before I'd focus on the center diff function alone. All of the STI DCCD's work well, and though there are differences, they are not what I would focus on.
The early STI transmissions (03-05) use a center diff that is open when no power is going to the DCCD just as you describe. If you want maximum rear bias, this may be a nice feature, but the newer transmissions behave almost the same. The bigger benefit to these early transmission is that they have an internal pump for better oiling of the transmission as a whole, and I'd say that this would be a more significant factor to push the decision to an early transmission. But of course, it would have to be in good shape as well.
The later STI transmissions (2006+) started to incorporate a viscus coupling that works with the DCCD. So though you may not be able to get the same rear bias as you can with the early transmission, it is pretty close. Both new and older transmissions will feel mostly like rear-wheel drive cars with no power going to the center differential. But these later transmissions did away with the oil pump for lubrication (starting in 2007+) and went to a more standard sling-trough. This makes the transmissions simpler in some ways, but maybe not as ideal for very high power or Motorsports use as the earlier transmissions with the dedicated pump.
So they both have some pluses and minuses. But any STI transmission will be very durable, and should work much better than any 5-speed would.
Hope that helps, and thanks for watching!
Thanks for your advice. Since the car will remain mainly a daily driver and I do not intend to exceed the stock 280hp very much, the presence/absence of the extra oil pump may not be very important. I will follow your advice and focus on availability and condition.
Hey mate, if interchanging the diff flanges from a R160 to an R180, can this be done without affecting the preload in the rear diff?
Thanks for your question. The nut that you remove to change the flange is on the pinion shaft. We have always just torqued it back to spec, and haven't had any issues.
So in our experience, it shouldn't make a difference there. But I suppose that ideally you would want to check the pinion depth after making the change.
Thanks for watching and Stay Tuned!
@@FlatironsTuning Thanks mate!
So if i have an 2008 wrx hatch what sti gearbox must i get?
Thanks for your question. There is no specific year that you would have to get. If you wanted to keep your rear diff (which wouldn't be ideal because it is an open diff), you would need an early STI trans (04-05). If you are going to be swapping out the rear diff for an R180, then it would only need make sure that the ratios of the diff and transmission match.
If you haven't all ready, take a look at the other video that we made specifically about the GR swap as well. Here is a link to that:
ua-cam.com/video/CieGYuOJQj4/v-deo.html
Thanks for watching!
Have you guys done a sti DCCD trans swap into a VA WRX?
Thanks for your question Chris. Not yet. We have started to look into it a bit, and from what we can tell, it is very similar to the GR WRX. With the different final drive, you will need to replace the rear diff with one that matches the 6MT, but that seems to be the biggest hurdle.
Hope that helps, and thanks for watching!