HOW TO: BIG POWER SUBARU PARALLEL FUEL SETUP | BUILT COSWORTH EJ257
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- Опубліковано 26 сер 2024
- Carrying on and nearing the end of the monstrous Deshele built Cosworth EJ257 Forester build series, I give you guys a run down on my custom built parallel fuel setup with twin 044's and an engine bay surge tank.
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boostedbuiltgarage
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I'm not running big power, but thinking of doing this just so I can tidy up some of the standard mess
love me some subi content and your fozzy has always been an inspiration to me, all this info is gonna go into my engine when i build it! awesome and informative and you cant beat that cheers man!!
Awesome man! Glad it's all helping - that's my goal 😀
You said you made sure all the hose lengths were the same. What are your specs for length for each line I’m setting up my parallel system right now
This setup is wilde!
that cleared up a lot of my questions. Great vid and thanks!
Good to hear bud, as you can see when it's broken down like that there's not really that much to it.
Time to do my fuel setup. Thought I’d revisit your setup. This vid made it so much clearer. Thanks Carl 🤙🏼
Haha yeah mate 👍 your hip pocket will feel 1.5k lighter😂😉
Boosted & Built Garage haha maybe it can wait a little haha 🤣
I have a 03 cross sport have none of what you have. Do you give advice for them?
have you done the 2 passenger side fuel rail parallel setup? im looking for the cheapest way to do this before my swap.
Good stuff! Keep it coming :-)
Wen using 2 pumps u need the one way valves on the both pumps they should have come with the pumps
Wut uppipe for rotated setup?
Great job
Hi nice set up may i have the parts list i am interested in this setup
Sick!!!.getting there not long now
i would of loved a part list for this set up
If you msg me on FB I can tell you what you need
Nice one Carl
+Puds Garage 🤙
Ride the tiger! Haha bit of Dio nice choice
👍👍👍
If you are staging the pumps, shouldn't you put a check valve before the y-piece to stop the flow from pushing back through the pump that isn't on?
+whatyareckon Yeah you're totally right. I actually completely forgot about that!
Boosted & Built Garage Haha well happy to help. Looks awesome otherwise.👍👌
Nice work! What fuel pump are you using in the main fuel tank
+bradey star Thanks mate. It's a Walbro gs342 255lph from memory
yo I just found this channel and god damn its awesome I instantly subd
+Jordan Martellaro Awesome man! Glad you found it - stay tuned for plenty more😁
Yo holy shit you replied so fast lol.. love Subaru and wanted to learn more about some of their systems and stumbled upon you channel your vids are awesome and now I want to start uploading on my own projects. Also may I ask what your schooling background is? don't want to bore you so this is just fluff but I own a 2010 lgt but its being fixed rn so ive been doing some dreaming on some mods for her so maybe ill have to film some installs. anyway I want to say keep doing what your doing and good luck.
+Jordan Martellaro Thanks heaps man it's really good to hear my stuff inspires so many others!
I've got a shit tonne coming soon on the subie which should be pretty educational I hope so stay tuned😊
Schooling background nothing special, qualified carpenter/builder, self taught fabrication, engineering and mechanic etc. Just love learning and have always been handy. Best way to learn is to firstly research and then to do 😏
Nice man and same I had of mechanical engineering taught to me by my highschool but everything that ive learned about cars and wiring is through my own perseverance in wanting to one day own my own fabrication and design shop for cars and race parts
Holy fuck bro
How come you chose to put the surge tank in the engine bay not the boot?
Many reasons:
- Less plumbing
- Is properly seperated from cabin by the firewall
- Didn't want to waste boot space
- Didn't want to have humming fuel pumps in my cabin
- Didn't want any potential fuel smells in my cabin...
To name a few
I see this modell has oem side feed injectors. Where you get this topfeed conversions holes
Yeah they used to be side feed. Google the radium top feed conversion kit and you'll find many suppliers
Not the cleanest looking fuel line set up. But regardless your doing it right. All -AN fittings, braided hose and those bad ass radium rails. I would have included those optional Radium 3/8 NPT Fuel Pulse Dampers underneath your fuel rails to help dampen out some of those oscillating fuel pressure pulses that can be caused when that second pump kicks in. Accurate fuel pressure data being possibly the difference between a plus or minus of 40hp or so I would have incorporated them.
Sorry about that rant there... I know you know how a fuel pressure damper works, lol.
I knew it was getting long but them words just kept on flowing through my phalanges tho.
Just a noob question. Why change the incoming fuel from -8 to -6? Is it required that you feed it into smaller? I plan on doing this setup in the future along with tgv delete
If you're talking about where it goes from -8 to twin -6 one to each rail, it's because I don't need a twin -8 amount of fuel at each rail. Also the radium rails came with their quality -6 fittings for the rails so saved me spending hundreds on other fittings
Boosted & Built Garage oh i see. Thanks!
I plan to use all -6an lines through the setup... don't think it should be a disadvantage.
nice!!
Is that surgetank a DW25L ? I have one my self but had read a lot about where to place it.Did you have to move anything to Place it where you did ?I´m thinking of the same Place. I have 2 255 lph pumps to and has Think about to let one feed every fuelrail, dont know if it works but my tuner should help me..As feedpump i shall use a dW300 or 400. I have read about people that makes 5-600 whp with just one pump, a DW400 intank pump so i dont know how it will be yet.
+Mattias Andersson It's an Aeroflow in engine bay surge tank. Fits two 044s or other brand equivalents.
Didn't have to move anything major, just make some custom brackets etc.
You don't really want 2 pumps running constantly, especially one per fuel rail, all it'll be doing is heating the fuel and recirculating a shit load. You'd also need a big return line to the tank.
Feed pump doesn't need to be massive either.
Yeah you probably could run one big pump, and many argue the pros and cons of twin vs single vs triple even. The way I see it - if it's all done right, have staged pumps, then they share the load a bit and keep the pressure up
What do you do with the vent line?
You can run it to the charcoal cannister like factory or just vent to atmosphere
How do you not have more subscribers???
🤷♂️ maybe one day
@@boostedbuiltgaragewell, keep 'em coming! I'm sure youtube's algorithms will eventually allow people to discover this hidden gem of a channel.
Thanks for the support man!
Surge tank in the engine bay? I never like leaving negative comments, but I've never seen that before & it's not the way I would go. You've got some rubber pieces on some of the fuel lines to stop heat transfer, but when there's about half a gallon of fuel sitting right above the engine...
Daemione
Its fine to put a surge tank in the bay. And there are actually a number of benifits to doing it.
1st, is the surge can is close to the engine, so a shorter run of large hose to the fuel rails. You dont have to re-do the existing harlines from tank on high power engines that would require it if the tank was in the rear. It is also usually very easy to find the OEM supply/return lines where they meet the engine, and hook in you surge can.
2nd. Most car batteries are also in engine bay. So its a very short run for you thick gauge power cabling to run the pressure pump/s.
3rd. Most ECUs are also close to the engine, usually just inside the firewall on the passenger side somewhere. So its easy to get your trigger for the main pump/s relay.
4th. You arent putting fuel system components inside you boot/trunk area. (Or in the case of my car being a wagin, inside the passenger compartment.) So its also a safety thing aswell.
As you say, heat in that location is not ideal. But realisticly it has very little effect on the system. Fuels cooling ability comes from its latent heat as it transfers from liquid to vapour. The heat before that is very small compared to energy pulled out during the state transition.
The fuel heat can effect the tuning parameters and slightly change the amount of fuel injected. But i think it will be tuned on a dyno and the heat of the fuel while tuning would be representitive of while driving.
I personally have my subaru surge tank down low on the passenger side of the firewall. (Basically where the down pipe would go, but on the opposite side of the engine.
+Bram Biesiekierski Mate you summed it up perfectly 👌 Dw man, people like to speculate when they haven't seen something done on the mainstream haha.
Guessing yours works totally fine?😉
Boosted & Built Garage
It works fine for most of the motorsport i have done. At the MC motorsport WA sprint championships i was previosly doing, i would basically go out for my runs with the fuel light just about showing. Sometimes even with it on. And the car would never surge. It was only sprints of about 2-3 laps. So i didnt need a large volume of fuel. And the wieght advantage of being able to run the main tank nearly empty was good. Without the surge tank, the car would surge at anything less than 3/4 full. So the tank allowed me to pull about 40kg of fuel out of the car.
But i do have an issue at barbagallo raceway. I was getting surge at anything less than 3/4 full main tank. I believe the surge tank volume was too small (1.5L). And the main tank would surge for a large enough time to allow the surge tank to run empty. Then the engine would surge. Barbagallo raceway is a clockwise track and has a largish banked right hander that would usually cause the problem.
I don't have personal experience installing and/or running a surge tank... but companies like Deatschwerks do - addressed in their FAQ: www.deatschwerks.com/surge-tank-faq: "Engine compartment is not a good location for sure tank installation. Fuel reservoirs should not be located in close proximity to ignition sources. In addition, elevated engine bay temperatures can heat up the fuel in the surge tank which can cause engine detonation and shortened fuel pump lifespan."
Radium's install kits for their surge tanks make a special note that they install in a "collision-safe area".
Aren't there rules from several different sanctioning bodies that require surge tanks to be nowhere near high temperature exhaust or ignition in case of leaking?
The ease of installation & routing lines & power cables reasoning doesn't work for me, if you're going to be running a car to the level which requires a surge tank, an extra 10 feet of hose & cable shouldn't be prohibitive.
Daemione
There are also companys like Process West who specifically make surge tanks that fit inside engine bays. For example, Process west 3rd gen subaru tank fits down on the lower left side lower firewall. Which is a very well protected area in the event of a crash. www.processwest.com.au/products/subaru/wrx-sti-g3/my08-13-wrx-sti-anti-surge-fuel-system
Deatshwerks probably say that because they need any excuse to justify why thier crappy unreliable fuel pumps fail all the time.
As far as collision safety, inside the engine compartment is generally gonna be alot safer than inside the passenger compartment. (Remember this is a open wagon, there is no much room in the back that ISNT inside the passeger compartment). The engine compartment seperates the passenger compartment with something known as a "firewall". Its not hard to imagine why its called that. See this video for what happens when a fuel cell is ruptured INSIDE the drivers compartment from a rear end collison. ua-cam.com/video/cRLWxFm3pjE/v-deo.html Remeber, this is going into a subaru forester, which is a wagon and is effectively all open inside. Would you rather that explosion happen inside the passenger compartment or inside the engine compartment????
why not send one pump to each side instead of Y to split.
the split is what subi sturggles with...
Because I'm not using both pumps til it's on full noise... Flowing an 044 for 2 injectors full time would be a terrible idea, aerating fuel and heating it up, cause back pressure etc. Would be fine if using a pwm pump speed controller though
@@boostedbuiltgarage but flowing 2 to 4 full time with a controller guess it depends on what you want to replace first.
Yep you definitely need to put a filter on your return.,..
Jks lol
That's a lot of work for a little performance