I've seen a few people spec out a motor in my life but you are kicking it in the butt. If you don't already work for a car company, I'm sure one of them would hire you for big money! Your skills should not be taken lightly, not many people can do what you can. Bravo Sir!
Seriously Jafro, I've been doing a lot of research on automotive diagnostics through various content providers here. I recently found your channel through the air compressor parts washer video, and man am I ever glad I found your channel. I am only 26 and I unfortunately have had no automotive mentors yet in my life, but guys like you really make a difference for those of us trying to learn about these things. Thank you :)
I have learned so much from your videos! My valves and valveseats broke on my 4G63 because of a balance belt failure. It was during a cold startup of the car, so the engine was hardly revving. Two pistons got a small scratch, but looks allright:) Went and got a new head from the US, and now, thanks to your videos, I'm confident that I should be able to put the car back together without spending a fortune at a workshop. Thank you so much for making these incredibly detailed videos! Faith in humanity has been restored!
I plan on buying an extra engine to rebuild for my Talon eventually; all these videos are very insightful and will help me along that journey one day on the quest for more power.
First of, Thank you for making this awesome video explaining valve clearance! I am 17 years old, and finishing my last year in collision repair and painting. I found this very interesting and learnt a lot. Though my brain could barely handle so much information. This vid needs more attention, because i have seen many valve clearance vids, but no one as good as yours! Thanks again! Sorry for my English, Im from Norway :)
Your English is better than mine! My videos are meant to overload your brain. :) I thank you for your vote of confidence and greatly appreciate your participation!
Thank you Tom! I'm struggling at the moment actually, doing everything I can. High spirits, though. I've never run from a challenge. I know the rest of what's outside of my ability will somehow be taken care of for me. I know you know what I mean. Your bumper looks fantastic! I'm really glad you're making your old HKS cams talk again! That segment made me LOL... which puts me in a whole lot of pain right now, but it was well worth it! Your kids cracked me up big time, too! I hope there's plenty more to come!
***** Well be strong my friend, and don't ever hesitate to give me a call if you wanna BS about stuff. I'm glad you enjoyed the last video, the 'talking cam' segment was shot at 2am after a marathon wrenching session. Ah, the things we do for these cars. The kids had lots of fun with their segment. I'm not sure where they get their natural hambone antics from...ahem. :-D Take care Jafro, hope to meet you in person some day.
I keep re watching these videos till I understand. They are extremely informative and have excellent flow. I will have my work cut out for me when I re-assemble that L28 sitting in my dads shed, its fresh from the machine shop. I now know more about camshaft behaviors than before but I still don't understand what to look for when buying one. I do have more of an idea than before though, through constant reading and watching, thanks Jafro!
This video is phenomenal. Exactly what you wanted happened. I understand all of what you've explained and I don't think I could have learned this unless someone showed me in person and over many examples, until this. As much as I enjoy your videos Jafro I realized I need to comment more on all your hard work. It's very appreciated and educational. I would love to see this beast in action one day.
May i thank you for your time, that you have put in these series to teach us. For me i just wanted to refurbish an engine for street use. but now i'm going to build it to last .
Thank you for taking over my love affair with the Sirius 1 engine platform. I do miss it, but I know it is in good hands now. Didn't know how far that engine was down the rabbit hole until now. Great work brother!!!!!!
I'm dying to know where the old cams were dialed in, but alas, I have fallen down that rabbit hole as well. I'm going to keep digging! Also... you know you're welcome to come over here and drive this thing or wrench on it any time you want. That right is inherent. Even if I rebuild it, it's your handiwork.
Also... I had to make this clearance. Once I realized what little oil pressure the HLA's were getting and how much lift was going to return as a result of correcting that with the teardrop mod, I just couldn't stop there. The valve clearance was probably inadequate on the previous build, but got away with it because of the head oil pressure problems. The HKS cams seemed to be a natural next step in trying to use this compression. Looks like the Hyundai's keeping the low end torque, but getting an awful lot of top end back. ;)
***** to the best of my memory when i had the 93' 1.8 Hyundai cams installed the dials were on -8intake -10exhaust in degrees of crank revolution. I just loved that lope they made when NA. I have an old sound bite of it. Sounds disgusting!
Thanks a bunch for this video! I have recently sought out answers to my questions and I was pointed in the direction of this video for a better understanding of valve timing. I have since then built a 4.6 sohc for a mustang and have used a lot of the same techniques that you have demonstrated in this video. Again, I want to say thank you for this great information. Keep up the great work.
your videos are so good dude. ive recently been in the market for a head to build to install on my mazda 3 (l5-ve). now that there are a couple companies that offer canshafts for it, ive been wanting to do it. im not an experianced mechanic but my mechanical skills are strong being a machinist for 10+ years and the things youve discussed have really opened my eyes about how to go about my project. i commend you for taking the time to video, edit and commentate the process youve undergone during your build. milliins of kudos to you sir!
Thanks for your work; it took me way more $ and time to learn tht at those automotive rip off schools. And you have made me see things clearly; appreciated your work. Thanks. I will stay tuned.
Thank you for your excellent description on 205 and 206, I am using this wisdom to install the aftermarket cams on my Miata and greatly appreciate the information I have obtained here.
That was a very nice animation in your video. Good job sir. I messed up valve clearance with a Chevy 327, broke a valve then took the block with it. That's why I now stick to cams other people have used.
Thank you, few recognize the complications involved with a 2520 layer photoshop file, so your observation is greatly appreciated. PS: is that a FireHawk in your avatar?
A friend of mine is transplanting his whole Firehawk driveline into a Monte Carlo right now. The Firehawk chassis is getting work done and coming back with a 6.2L blow-thru build with Enderle fuel injection. It's going to be like Wu-Tang on wheels. The firehawk should be pretty quick as well! :P
wow i have to say you are amazing. I have leaned so much about DSMs i have work to do on my 95 eagle talon TSI AWD. Wish you were closer and in true fashion as you called Jamie your mentor you are my mentor. maybe someday i can visit and learn even more.
Just wanna say i LOVE all the time you put into videos. I have learned much in the 4g63/2g world from them. One thing though.. You do NOT decrease your powerband with a wider lsa. Actually the opposite, with a "narrow" lsa the powerband will be peaky and fall off rather quckly soon after peak. with a wide lsa you trade some peak power to "spread" thing out and carry power further out..... I only know this from my experience with V8's. I have "spec'd" several cams my self, (picking your own lobes/lsa/icl...) Keep up the great video's. Very informative.. p.s., i was suprised you had clearance problems with your 264/272 hks combo, even with shaved head. very "small" cams, though they do tighten up lsa over stock.
You is awesome! I really appreciate the huge amount of effort in your videos, that even the description is just full of content. The same kind of awesome job that you do with the motor. Really, I have huge respect for you rn
Gearing up for a rebuild on my GST. Your video's are always a great wealth of knowledge. Thanks for making them and im always looking forward to new video's.
Thank you I appreciate your insight I've been a tech for 10 years built plenty of engines but always had the machine shop figure out the numbers for me I'm extremely glad I watched this vid
Haaaaaaaa!!!!! WOW, I have NEVER thought of cutting deeper/relocated Fly cuts ( didn't know they were called that either) in the PISTIONS!!!! Haaaaaaaa… "Plastigage" (or silly putty, lol) is how I'll be checking final Actual clearance, as I install the cams on my next bike engine build! Fun and Informative Video though! Thanks again.
I never looked at the engine code yet and its one of several cars I have to fix and sell if it is a good motor id love to make a sleeper and ur vids are my key to start
Ya know it's kinda like school when I watch you. Awesome school!!! I wish I could tell you how fun my new fiesta ST is but I can't. It won't let me upload my smile. Btw I love the reply to my last comment. The 1 liter ecoboost is the next kid tuners dream. Anyway thanks for another great video.
Great video (as all your videos) . You really inspire me to work on my own car. I appreciate how long it takes while filming everything, and the the editing... My god, you are awesome!
Very good video. A little complicated for the untrained engine builder but the only time you need to worry about piston to valve clearence is on the overlap period the rest doesn't matter. .080" with the right valve springs is more than you need.
Jafro, thanks so much for making these videos. I've been a fan for a while but just watching for entertainment because the motorcycle work/fun I've been doing didn't require knowing this stuff...YET. I'm dropping a larger motor into my bike ('78 CB550 but putting a 674cc bored out '82 CB650 motor in it with Megacycle cam). I've been watching this video and the previous one about degreeing these past couple days and it's confusing, but I just started to grasp it. I feel much better that I can match the cam card and measure valve to piston clearance with your video, THANK YOU!
Can you expect the hydraulic lifters to respect your accurate measurements in the timing ? Do you take in consideration parameters, regarding hydraulic lifters,like oil viscosity,temperature or something else that i don't know (timing belt tension?) wich could be modified during the rotation,so modify the accuracy of the timing ? Do they have their place in a timing setting or they are stable values ? Very, very, interesting. I know i'm french and i have to work a bit more to understand but,if you spoke a bit slower and had more inflexions in your tone voice, it could be way easier for the brain to ingest the informations. i will be a bit harsh and use an image : you have no back pressure if you know what i mean. Like i said ,very very interesting. A lot of work involved here,very nice animations...high quality and a lot of will to obtain it. : )
We can *not* expect hydraulic lifters to respect the accurate measurements. That's why we set zero lash on solid lifters to test with... it gives us results for a fully-inflated lifter so that we can test clearances at the maximum possible lift. It's unlikely that oil pressure will overcome the valve springs' seat pressures, so if anything, lift will be lost by the hydraulic lifters, not gained. The timing values regarding tension, viscosity, temerature, etc... all of those are figured into the .080" and .100" values that we aimed for in the setup. That's why those gaps are set that way. Timing adjustments done by the ECU won't affect valve timing, only ignition timing... and all 3 shafts are splined together on a toothed gear drive and belt, so the valve clearance would only really be affected by belt deflection. All of that would fall well below the .080" and .100" clearance values even with thermal expansion and other factors added in. :) Doing voiceovers is actually a massive amount of work, and it's tedious. I have to script it and synchronize it to video, so many times my dictation speed is regulated by the video I have to work with. I've noticed slow improvements in the voiceovers from one video to the next, and hopefully I can better develop my ability to meet your expectations. I have to say you're doing just fine, though... you always ask great questions, so I know you're still getting the message. ;)
***** Ok. i have no seen or i have no understood you used solid lifters to do this,so i have asked. i just know solid lifters are way more accurate in movement transmission when engines run on seriousness. I don't expect anything from you and i don't really ask you to modify your style. It would be pretentious. it was a "drive by" suggestion from my quite slow french brain,from my point of view of foreigner.(i think you have fans from all around the world) It's quite cool to be able to watch that yet. Do it like you like to do it. It's the best way to keep a bit of you in the vids. Thank you for the answer : )
michaelovitch Hahah. I did not take it that way. I went back and watched one of my old videos to answer a question, and was very disappointed with my own work. It helps me keep perspective. My audio and video quality have dramatically improved in the 5 years I've been doing this here. :) ...and many people's abilities to understand Eastern US accents as well, I'm sure. ;) Thank you for accepting the challenge!
I'd love to see you make a timing belt video. Most of us know how it's done and have done them, but a timing belt video in your style would be most excellent. and there are no good 4g63 timing belt videos out there. Thanks for all your videos, they're great.
Thanks for all this wonderful information. Going to finally be getting a set of cams after what seems like a decade of 4g ownership. (All though I took a 3 year break during college) So this will go to good use soon.
Love those Manley pistons you used in the animation. Man they look rough! They were used with a oversize head gasket I'm guessing..... And you actually have different sized valves in the animation. Well done sir.
Great editing on a very difficult topic. Not many would have the juevos to attempt covering this material. Thanks again for all your time and efforts. P.S. Will you have to round over the sharp edges from machining of the fly cuts to prevent possible hot spots?
The explanation of the LSA and how it affects the performance that you gave is valid for a clockwise rotation engine with intake camshaft on the left side OR counter-clockwise rotation engine with intake camshaft on the right side. The 4G63 is a bit odd in that it rotates clockwise but its intake camshaft is located on the right side (looking from the front of the engine), so the effects of changing LSA are also inverse compared to other engines.
***** Hahah! Thanks! Although I'd have moral problems adjusting climate data and then calling it "science", I understand what you mean, and I appreciate you. I'd settle for being their next door neighbor so I could easily ask them if I could borrow tools.
Had audio problems. It was a battle. Almost had to rebuild the master file to fix it. There were things I wanted to fix in this video but didn't because it was just shredding it with every change. I'm very glad to have this one finished.
Thanks for this video, Wicked explanation, just made me question how the engine i just gave a new headgasket is going to hold on ... might be a granade . hehe as usual was an honor to watch your video, and i learned alot. ViscusDk
***** thanks again for the efford in making the videos, i´ve learned alot so far, and will continue to learn as you post videos. apreciate your work greatly. ( i know my english is kinda bad. sorry for that)
I can't stand imports and I can't stand 4cyls, but man I love your videos! Just finished your entire rebuild series. Great work man, looking forward to seeing more. +Sub
Thanks Warndog! That was kinduv my intention with this channel. The tech here applies to all combustion engines no matter how many pistons they have. People learn more when they leave their comfort zone. I was born and raised on V8 classics myself. Carroll Shelby is the reason why I work on these particular turbo imports today. Carroll did a quick stint with Dodge in the mid-'80's releasing a limited run of turbo 4-cylinder performance cars based on the OMNI platform, and they decimated all the turbo imports on the market at the time. Porsche, Audi, Volvo and Saab also had entries into the turbo import market and they were all slow, heavy, unweildy bricks. Japan's early '80's turbo cars were a disaster (Nissan Pulsar NX). The Shelby GLH even walked the dog on the Mustang GLX 2.3 Turbo. Shelby's contract was less than 2 years with Chrysler. What he excelled with in design and engineering, he lacked in production numbers and sales... but when he left Chrysler, it opened the door for another manufacturer to fill that performance void. Mitsubishi stepped up by forming the DSM partnership (Chrysler, Eagle, Mitsubishi, Hyundai), and turbocharging their 4g series engines. This engine won 14 World Rally Championship titles. The 1989 Dodge Colt GT won Car&Driver's Car-of-the-Year award, beating out the Corvette. 4gxx engine production numbers eventually racked in the 10's of millions over a span of 25 years globally and the turbo and non turbo engines shared the same service parts. They're even the most popular forklift engine around the globe, and though Mitsubishi and Hyundai have stopped building them many years ago... new 4g series engines and parts are still being manufactured in China today. This kind of production ensured that it will forever remain an inexpensive startup platform for the prospective gearhead. There's a lot less guilt in experimentation and driving worthless imports than there is be modifying and racking up miles on a classic, rare muscle car. Even the most die-hard muscle car collector deep down inside wants to modify his baby but most of them never will because it destroys its collectibility. I wanted this channel to scratch that itch. Thank you for your confirmation of my achievement, and for your subscription! :) b PS: If it makes you feel any better, my daily driver is a 6,000lb 385hp Coyote V8. If you're a Chevy guy, drop in on Tom's Turbo Garage and check out what that DSMer did to a Miata. If you're a Dodge guy, accept that the Eclipse is a Chrysler, and produced domestically. ;)
Haha Oh yea I'm a HUGE fan of Tom's and I had grit my teeth daily waiting for another post in his LS Miata series. (And yes I'm a Chevy guy lol) You definitely hit the nail on the head with this channel. I love watching long project series. And on a side note, Be it a 4cyl DOHC, Yote, Hemi, or LS, and no matter what they get put in, I always respect the man turnin the wrench. You won't see me running a turbo civic anytime soon, but I have nothing but respect for the guy that built it. For me, my inspiration has always been largely out of necessity. I simply cannot afford to pay a mechanic to fix my problems therefore I must do it myself. As I write this I'm taking a quick break from replacing the head gaskets on a Chevy 350 TBI on a Tahoe that I picked up for $250. Next on my list is my father's 03 2.2L S10 which has a nasty lifter tick. I have about 4 days to do all this before we take both trucks up to Oregon. I'm praying it's a simple fix like a siezed lifter or bent rod, or even just a rocker adjustment. We shall see. But yea, long story short, thank you for everything you have done and shared with us. The past few days I've been struggling mentally to get outside and start wrenchin but your videos have definitely got my blood pumping and ready to wrench.
My mechanical ability was also born from necessity and frugality, just as yours is. My penchant for modifications came from the DeTomaso crowd. I grew up with a Pantera in the driveway, and spent years rolling with the Pantera Owners' Club (POCA) and going to SCCA get togethers. My stepfather also owned dozens of Shelby cars throughout his lifetime and we followed Carroll around to events and gatherings all over America. The Pantera had a 351 Cleveland in it. Newer technology than the '60's era Shelby and SCCA stuff, but because of OPEC, and because of the limited racing history of the Panteras, in those circles it seems anything goes. They were street cars, and fairly de-tuned at that. Their airflow characteristics and port velocities are extremely similar to the 4g63 which is also considered a de-tuned engine in stock form. But at each of these shows, the Pantera crew had the most radical modifications both from a performance and appearance standpoint than any other car that showed up. I've got a video of acetate scans and old DV footage of some of these examples. Watch that video and see what I mean. It's like no two cars even resemble each other anymore. They're all one-of-a-kiind customs now, including the 9,000 mile old original 1973 GT that's featured in it. If you're the only one left in stock fashion... then it's a one-of-a-kind now. It was the DSM crowd in the early 2000's who taught me how to do the modifications I'd spent my life looking at. All the Pantera guys paid other people to do their mods. Must be nice to have money like that. The fastest car in my family today is a big block 68 Chevy Camaro, and it's a trailer queen. Not street legal. It runs 4.90's in the 1/8, all motor. That cousin laughs at my imports, too. Well ok then. I'm cool with that. Best I've got with my street radials and pump gas is a 7.67, but I don't have to re-pack a parachute every time I stop.
Keep in mind the fact that GoogTube's stupid idea to keep the like and dislike button so close is at fault here. This video has over 100k views. Of those views, a certain number is via mobile devices. Touch, mobile devices. You can do the math. It's the dumbest thing possible, really, and it's caused by their inability to recognize and fix a known problem where a mistake results in a dislike for every X number of views. Mind you, for your deal with UA-cam, it doesn't matter if you have + or - (of course, excesses are an issue, but for different reasons) what matters is interaction. Comments, views, shares, likes being last.
Jafromobile Hello jafro I'm building my first 4g63 really its my first full engine rebuild. I'm trying to degree my cams and I'm having a little bit of trouble. I'm sure ur a really busy guy but if there is any way u could find a few minutes to talk with me for some advice itd be really appreciated and im sure more than helpful. if there's any way to PM me or add me as a friend so we can exchange information and talk cars and parts that'd be great. thanks for your time jafro hope to talk to you soon! :) I'm having a blast working on and figuring out this engine can't wait to hear it running with no worrys as I turn key for first time. Your videos have been very helpful and detailed and much appreciated by me and I'm sure lots of others nice to see a guy who actually knows about the 4g63 and who also takes the time to make the videos so he (you) can spread the knowledge uve learned. Once again jafro thanks for everything you do also shout out to your mentor and teacher Jamie.. the world would be much different and a lot less helpful with out u two. Lol
I lol when you said that after this block goes you have to start over with a new one. Sounds just like me and my excuse to install my dohc 16v engine into my honda instead of my sohc 8v. Yes the sohc gets over 40mpg, but thats also because I don't use a heavy foot, as their is no point with 95hp lol. But one good thing about this is saving up more money so I can build the dohc. Also when I finish that, I get to start to piece together my turbo kit! yeehaw! Can't wait for next vid from you. Buy those doughnuts and get those guys working! heh.. Oh and don't forget the coffee, later.
Oh I forgot to mention. For the sake of sleepers and the priceless expressions you get on people face. Please use your Hyundai car for the chassis you run all the 4G63's you build in present and future. Thanks. Oh stock wheels also please..(maybe some rigged sleeper wheels if you cannot fit the amount of rubber you need for proper traction ;o)
I've seen a few people spec out a motor in my life but you are kicking it in the butt. If you don't already work for a car company, I'm sure one of them would hire you for big money! Your skills should not be taken lightly, not many people can do what you can. Bravo Sir!
Seriously Jafro, I've been doing a lot of research on automotive diagnostics through various content providers here. I recently found your channel through the air compressor parts washer video, and man am I ever glad I found your channel. I am only 26 and I unfortunately have had no automotive mentors yet in my life, but guys like you really make a difference for those of us trying to learn about these things. Thank you :)
I have learned so much from your videos! My valves and valveseats broke on my 4G63 because of a balance belt failure.
It was during a cold startup of the car, so the engine was hardly revving. Two pistons got a small scratch, but looks allright:)
Went and got a new head from the US, and now, thanks to your videos, I'm confident that I should be able to put the car back together without spending a fortune at a workshop. Thank you so much for making these incredibly detailed videos!
Faith in humanity has been restored!
just learned more about my car's inner workings in 27 minutes than I had in the previous 3 years. awesome job dude.
This is it. The line between backyard hacker and serious mechanic. You've crossed it right here.
I plan on buying an extra engine to rebuild for my Talon eventually; all these videos are very insightful and will help me along that journey one day on the quest for more power.
First of, Thank you for making this awesome video explaining valve clearance!
I am 17 years old, and finishing my last year in collision repair and painting.
I found this very interesting and learnt a lot. Though my brain could barely handle so much information. This vid needs more attention, because i have seen many valve clearance vids, but no one as good as yours!
Thanks again!
Sorry for my English, Im from Norway :)
Your English is better than mine! My videos are meant to overload your brain. :) I thank you for your vote of confidence and greatly appreciate your participation!
Incredibly well done Jafro! The animations were so helpful and educational too. Hope all is well!
Thank you Tom! I'm struggling at the moment actually, doing everything I can. High spirits, though. I've never run from a challenge. I know the rest of what's outside of my ability will somehow be taken care of for me. I know you know what I mean.
Your bumper looks fantastic! I'm really glad you're making your old HKS cams talk again! That segment made me LOL... which puts me in a whole lot of pain right now, but it was well worth it! Your kids cracked me up big time, too! I hope there's plenty more to come!
***** Well be strong my friend, and don't ever hesitate to give me a call if you wanna BS about stuff. I'm glad you enjoyed the last video, the 'talking cam' segment was shot at 2am after a marathon wrenching session. Ah, the things we do for these cars.
The kids had lots of fun with their segment. I'm not sure where they get their natural hambone antics from...ahem. :-D Take care Jafro, hope to meet you in person some day.
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I keep re watching these videos till I understand. They are extremely informative and have excellent flow. I will have my work cut out for me when I re-assemble that L28 sitting in my dads shed, its fresh from the machine shop. I now know more about camshaft behaviors than before but I still don't understand what to look for when buying one. I do have more of an idea than before though, through constant reading and watching, thanks Jafro!
While that was a fast talk through, that was the most detailed video I’ve seen on cams to include fly cuts and ensuring timing is correct. Great job.
This is the best technical video I've ever seen. I've watched it before and I'll watch it again. Congrats on the quality of your work.
This video is phenomenal. Exactly what you wanted happened. I understand all of what you've explained and I don't think I could have learned this unless someone showed me in person and over many examples, until this. As much as I enjoy your videos Jafro I realized I need to comment more on all your hard work. It's very appreciated and educational. I would love to see this beast in action one day.
My first 4g63 build is running and your videos were a fundamental part of the process. Thank you and hopefully see you at the track next season.
May i thank you for your time, that you have put in these series to teach us.
For me i just wanted to refurbish an engine for street use. but now i'm going to build it to last .
I have not watched all of your videos but I am pretty sure this is the most epic one yet. Thank you.
Only pretty sure? :(
:D
Your knowledge is awe inspiring. Can't wait to see this one back on the road and on the track.
I'm a changed man
Thank you for taking over my love affair with the Sirius 1 engine platform. I do miss it, but I know it is in good hands now. Didn't know how far that engine was down the rabbit hole until now. Great work brother!!!!!!
I'm dying to know where the old cams were dialed in, but alas, I have fallen down that rabbit hole as well. I'm going to keep digging!
Also... you know you're welcome to come over here and drive this thing or wrench on it any time you want. That right is inherent. Even if I rebuild it, it's your handiwork.
Also... I had to make this clearance. Once I realized what little oil pressure the HLA's were getting and how much lift was going to return as a result of correcting that with the teardrop mod, I just couldn't stop there. The valve clearance was probably inadequate on the previous build, but got away with it because of the head oil pressure problems.
The HKS cams seemed to be a natural next step in trying to use this compression. Looks like the Hyundai's keeping the low end torque, but getting an awful lot of top end back. ;)
***** to the best of my memory when i had the 93' 1.8 Hyundai cams installed the dials were on -8intake -10exhaust in degrees of crank revolution. I just loved that lope they made when NA. I have an old sound bite of it. Sounds disgusting!
This is the kind of education you usually have to pay for. Thanks for making this video
Thanks a bunch for this video! I have recently sought out answers to my questions and I was pointed in the direction of this video for a better understanding of valve timing. I have since then built a 4.6 sohc for a mustang and have used a lot of the same techniques that you have demonstrated in this video. Again, I want to say thank you for this great information. Keep up the great work.
Does your 4.6 v8 have Vvt? Installed and which Versions of the head do you have a 2V or a 3V or 4V
your videos are so good dude. ive recently been in the market for a head to build to install on my mazda 3 (l5-ve). now that there are a couple companies that offer canshafts for it, ive been wanting to do it. im not an experianced mechanic but my mechanical skills are strong being a machinist for 10+ years and the things youve discussed have really opened my eyes about how to go about my project. i commend you for taking the time to video, edit and commentate the process youve undergone during your build. milliins of kudos to you sir!
This video saved me literally thousands of dollars. Thank you so much i almost blew up an r32.
You sir are the man! I consider myself a good shade tree, but your taking me to a whole new level with what I learn from these video's.
Thanks for your work; it took me way more $ and time to learn tht at those automotive rip off schools. And you have made me see things clearly; appreciated your work. Thanks. I will stay tuned.
Yet another outstanding video. I've said it before but, YOU are a excellent teacher / explainer!
Brilliant. Easily some of the best production work for auto repair I have seen.
Thank you for your excellent description on 205 and 206, I am using this wisdom to install the aftermarket cams on my Miata and greatly appreciate the information I have obtained here.
The lobe separation angle stuff was really interesting, I didn't know this but it makes sense. Thanks.
That was a very nice animation in your video.
Good job sir.
I messed up valve clearance with a Chevy 327, broke a valve then took the block with it.
That's why I now stick to cams other people have used.
Thank you, few recognize the complications involved with a 2520 layer photoshop file, so your observation is greatly appreciated. PS: is that a FireHawk in your avatar?
***** My brother built a 632RWHP WS6, and it's now my ultimate goal to have one.
A friend of mine is transplanting his whole Firehawk driveline into a Monte Carlo right now. The Firehawk chassis is getting work done and coming back with a 6.2L blow-thru build with Enderle fuel injection. It's going to be like Wu-Tang on wheels. The firehawk should be pretty quick as well! :P
***** the ws6 are becoming instant classics. Used Prices have already doubled. They are awesome cars.
dude! You have taken your production to a whole new level. By far the best youtube channel in the internet
Can't thank you enough for taking the time to make these video's. They've taught me so much! Thank you!
this is about the number 13 I see this video and every time I found something new to learn
Absolute top quality video and information, I just binged this whole series
wow i have to say you are amazing. I have leaned so much about DSMs i have work to do on my 95 eagle talon TSI AWD. Wish you were closer and in true fashion as you called Jamie your mentor you are my mentor. maybe someday i can visit and learn even more.
Jafro, amazing every video I watch I learn something new.
Just wanna say i LOVE all the time you put into videos. I have learned much in the 4g63/2g world from them. One thing though.. You do NOT decrease your powerband with a wider lsa. Actually the opposite, with a "narrow" lsa the powerband will be peaky and fall off rather quckly soon after peak. with a wide lsa you trade some peak power to "spread" thing out and carry power further out.....
I only know this from my experience with V8's. I have "spec'd" several cams my self, (picking your own lobes/lsa/icl...)
Keep up the great video's. Very informative..
p.s., i was suprised you had clearance problems with your 264/272 hks combo, even with shaved head. very "small" cams, though they do tighten up lsa over stock.
You is awesome! I really appreciate the huge amount of effort in your videos, that even the description is just full of content. The same kind of awesome job that you do with the motor. Really, I have huge respect for you rn
Will have to watch these videos many times to soak up all that info, amazing stuff. Loving it!
Gearing up for a rebuild on my GST. Your video's are always a great wealth of knowledge. Thanks for making them and im always looking forward to new video's.
These videos are really good with great detail I'm enjoying watching them.
Thank you I appreciate your insight I've been a tech for 10 years built plenty of engines but always had the machine shop figure out the numbers for me I'm extremely glad I watched this vid
You did again Jafro, you made a video that I can't stop watching! Great job, I'm learning things here. Greetings from the netherlands
As always your work (and explanations) are above par. Great work Jafro. I await your next installment.
Haaaaaaaa!!!!! WOW, I have NEVER thought of cutting deeper/relocated Fly cuts ( didn't know they were called that either) in the PISTIONS!!!! Haaaaaaaa… "Plastigage" (or silly putty, lol) is how I'll be checking final Actual clearance, as I install the cams on my next bike engine build! Fun and Informative Video though! Thanks again.
Extremely detailed video! Excellent work!
This vid has reach a whole new level. Awesome!!!! Keep em coming!!!!!
I have been checking daily for a new video, it's like i'm on crack! Awesome work Jafro, keep up the great work!
Need more videos. I'm addicted. I'm try learn more before I commit to a k series build
I never looked at the engine code yet and its one of several cars I have to fix and sell if it is a good motor id love to make a sleeper and ur vids are my key to start
If it starts with a "G4xx", you're in luck!
Excellent explanation. Thanks for putting in the time and effort.
Always look forward to your videos. Thanks for taking the time to make them!
I've been really enjoying your 4g63 videos. It takes me back to eagle talon vs ford probd
Ya know it's kinda like school when I watch you. Awesome school!!! I wish I could tell you how fun my new fiesta ST is but I can't. It won't let me upload my smile. Btw I love the reply to my last comment. The 1 liter ecoboost is the next kid tuners dream. Anyway thanks for another great video.
Great video (as all your videos) . You really inspire me to work on my own car. I appreciate how long it takes while filming everything, and the the editing... My god, you are awesome!
Very good video. A little complicated for the untrained engine builder but the only time you need to worry about piston to valve clearence is on the overlap period the rest doesn't matter. .080" with the right valve springs is more than you need.
All I can say is: wow! :) Please make a video when it's ready to fly and show us what the car can do!
hope you still keep up with the comments cause you rock! fantastic and eye opening.
I love you videos! Thank you so much for sharing your knowledge!
Jafro, thanks so much for making these videos. I've been a fan for a while but just watching for entertainment because the motorcycle work/fun I've been doing didn't require knowing this stuff...YET. I'm dropping a larger motor into my bike ('78 CB550 but putting a 674cc bored out '82 CB650 motor in it with Megacycle cam). I've been watching this video and the previous one about degreeing these past couple days and it's confusing, but I just started to grasp it. I feel much better that I can match the cam card and measure valve to piston clearance with your video, THANK YOU!
Sweet! I post this stuff specifically to help people like you! :) b
Can you expect the hydraulic lifters to respect your accurate measurements in the timing ?
Do you take in consideration parameters, regarding hydraulic lifters,like oil viscosity,temperature or something else that i don't know (timing belt tension?) wich could be modified during the rotation,so modify the accuracy of the timing ?
Do they have their place in a timing setting or they are stable values ?
Very, very, interesting.
I know i'm french and i have to work a bit more to understand but,if you spoke a bit slower and had more inflexions in your tone voice, it could be way easier for the brain to ingest the informations.
i will be a bit harsh and use an image : you have no back pressure if you know what i mean.
Like i said ,very very interesting.
A lot of work involved here,very nice animations...high quality and a lot of will to obtain it.
: )
We can *not* expect hydraulic lifters to respect the accurate measurements. That's why we set zero lash on solid lifters to test with... it gives us results for a fully-inflated lifter so that we can test clearances at the maximum possible lift. It's unlikely that oil pressure will overcome the valve springs' seat pressures, so if anything, lift will be lost by the hydraulic lifters, not gained.
The timing values regarding tension, viscosity, temerature, etc... all of those are figured into the .080" and .100" values that we aimed for in the setup. That's why those gaps are set that way. Timing adjustments done by the ECU won't affect valve timing, only ignition timing... and all 3 shafts are splined together on a toothed gear drive and belt, so the valve clearance would only really be affected by belt deflection. All of that would fall well below the .080" and .100" clearance values even with thermal expansion and other factors added in. :)
Doing voiceovers is actually a massive amount of work, and it's tedious. I have to script it and synchronize it to video, so many times my dictation speed is regulated by the video I have to work with. I've noticed slow improvements in the voiceovers from one video to the next, and hopefully I can better develop my ability to meet your expectations. I have to say you're doing just fine, though... you always ask great questions, so I know you're still getting the message. ;)
*****
Ok.
i have no seen or i have no understood you used solid lifters to do this,so i have asked.
i just know solid lifters are way more accurate in movement transmission when engines run on seriousness.
I don't expect anything from you and i don't really ask you to modify your style.
It would be pretentious.
it was a "drive by" suggestion from my quite slow french brain,from my point of view of foreigner.(i think you have fans from all around the world)
It's quite cool to be able to watch that yet.
Do it like you like to do it.
It's the best way to keep a bit of you in the vids.
Thank you for the answer : )
michaelovitch Hahah. I did not take it that way. I went back and watched one of my old videos to answer a question, and was very disappointed with my own work. It helps me keep perspective. My audio and video quality have dramatically improved in the 5 years I've been doing this here. :) ...and many people's abilities to understand Eastern US accents as well, I'm sure. ;) Thank you for accepting the challenge!
michaelovitch Are you kidding me? The northeastern US has some of the thickest accents in the country.
I'd love to see you make a timing belt video. Most of us know how it's done and have done them, but a timing belt video in your style would be most excellent. and there are no good 4g63 timing belt videos out there.
Thanks for all your videos, they're great.
Thanks for all this wonderful information. Going to finally be getting a set of cams after what seems like a decade of 4g ownership. (All though I took a 3 year break during college) So this will go to good use soon.
Love those Manley pistons you used in the animation. Man they look rough! They were used with a oversize head gasket I'm guessing.....
And you actually have different sized valves in the animation. Well done sir.
cant wait to see how much power this thing makes sooo exciting ;)
Fantastic information on this one!
Awesome, thanks for sharing, can't wait for the next video.
Awesome awesome awesome video Jafro, thanks you so much for taking the time making these video!!
thank you for taking the time to make this video!
I don't understand anything but I want more! I want the next episode!! :D
If i could do more than like this video i would...nice job Jafro!!!
All I can say: Great videos.
sounds like working ,starting from scratch,survivour spirit!!!
Dude wow! thanks for this I learned so much from this video, thanks :)
Great editing on a very difficult topic. Not many would have the juevos to attempt covering this material.
Thanks again for all your time and efforts.
P.S. Will you have to round over the sharp edges from machining of the fly cuts to prevent possible hot spots?
This fellow is a Jedi!
Thanks for video! Very important infomation!
Awesome video again.....Thanks for sharing this
The explanation of the LSA and how it affects the performance that you gave is valid for a clockwise rotation engine with intake camshaft on the left side OR counter-clockwise rotation engine with intake camshaft on the right side. The 4G63 is a bit odd in that it rotates clockwise but its intake camshaft is located on the right side (looking from the front of the engine), so the effects of changing LSA are also inverse compared to other engines.
im probably going to download this video and reference it till the end of time
Awesome as always, thanks for this!
lmao im not even in the DSM game anymore, havent been in about 10 years but i watch all jafros videos they are super interesting
Sick Information, Great Job!!!
Excellent video.....you should work for NASA. I'll definitely be referencing this on my next build. Thank you so much.
***** Hahah! Thanks! Although I'd have moral problems adjusting climate data and then calling it "science", I understand what you mean, and I appreciate you. I'd settle for being their next door neighbor so I could easily ask them if I could borrow tools.
Thank´s champ , been waiting all day for it :)
Had audio problems. It was a battle. Almost had to rebuild the master file to fix it. There were things I wanted to fix in this video but didn't because it was just shredding it with every change. I'm very glad to have this one finished.
Thanks for this video, Wicked explanation, just made me question how the engine i just gave a new headgasket is going to hold on ... might be a granade . hehe
as usual was an honor to watch your video, and i learned alot.
ViscusDk
***** thanks again for the efford in making the videos, i´ve learned alot so far, and will continue to learn as you post videos. apreciate your work greatly.
( i know my english is kinda bad. sorry for that)
So interesting! Thanks for sharing and all the effort! God bless
I will have to watch this one again.
Once again, a very good video!
I can't stand imports and I can't stand 4cyls, but man I love your videos! Just finished your entire rebuild series. Great work man, looking forward to seeing more. +Sub
Thanks Warndog! That was kinduv my intention with this channel. The tech here applies to all combustion engines no matter how many pistons they have. People learn more when they leave their comfort zone.
I was born and raised on V8 classics myself. Carroll Shelby is the reason why I work on these particular turbo imports today. Carroll did a quick stint with Dodge in the mid-'80's releasing a limited run of turbo 4-cylinder performance cars based on the OMNI platform, and they decimated all the turbo imports on the market at the time. Porsche, Audi, Volvo and Saab also had entries into the turbo import market and they were all slow, heavy, unweildy bricks. Japan's early '80's turbo cars were a disaster (Nissan Pulsar NX). The Shelby GLH even walked the dog on the Mustang GLX 2.3 Turbo. Shelby's contract was less than 2 years with Chrysler. What he excelled with in design and engineering, he lacked in production numbers and sales... but when he left Chrysler, it opened the door for another manufacturer to fill that performance void. Mitsubishi stepped up by forming the DSM partnership (Chrysler, Eagle, Mitsubishi, Hyundai), and turbocharging their 4g series engines. This engine won 14 World Rally Championship titles. The 1989 Dodge Colt GT won Car&Driver's Car-of-the-Year award, beating out the Corvette. 4gxx engine production numbers eventually racked in the 10's of millions over a span of 25 years globally and the turbo and non turbo engines shared the same service parts. They're even the most popular forklift engine around the globe, and though Mitsubishi and Hyundai have stopped building them many years ago... new 4g series engines and parts are still being manufactured in China today. This kind of production ensured that it will forever remain an inexpensive startup platform for the prospective gearhead. There's a lot less guilt in experimentation and driving worthless imports than there is be modifying and racking up miles on a classic, rare muscle car. Even the most die-hard muscle car collector deep down inside wants to modify his baby but most of them never will because it destroys its collectibility. I wanted this channel to scratch that itch. Thank you for your confirmation of my achievement, and for your subscription! :) b
PS: If it makes you feel any better, my daily driver is a 6,000lb 385hp Coyote V8. If you're a Chevy guy, drop in on Tom's Turbo Garage and check out what that DSMer did to a Miata. If you're a Dodge guy, accept that the Eclipse is a Chrysler, and produced domestically. ;)
Haha Oh yea I'm a HUGE fan of Tom's and I had grit my teeth daily waiting for another post in his LS Miata series. (And yes I'm a Chevy guy lol) You definitely hit the nail on the head with this channel. I love watching long project series. And on a side note, Be it a 4cyl DOHC, Yote, Hemi, or LS, and no matter what they get put in, I always respect the man turnin the wrench. You won't see me running a turbo civic anytime soon, but I have nothing but respect for the guy that built it.
For me, my inspiration has always been largely out of necessity. I simply cannot afford to pay a mechanic to fix my problems therefore I must do it myself. As I write this I'm taking a quick break from replacing the head gaskets on a Chevy 350 TBI on a Tahoe that I picked up for $250. Next on my list is my father's 03 2.2L S10 which has a nasty lifter tick. I have about 4 days to do all this before we take both trucks up to Oregon. I'm praying it's a simple fix like a siezed lifter or bent rod, or even just a rocker adjustment. We shall see.
But yea, long story short, thank you for everything you have done and shared with us. The past few days I've been struggling mentally to get outside and start wrenchin but your videos have definitely got my blood pumping and ready to wrench.
My mechanical ability was also born from necessity and frugality, just as yours is. My penchant for modifications came from the DeTomaso crowd. I grew up with a Pantera in the driveway, and spent years rolling with the Pantera Owners' Club (POCA) and going to SCCA get togethers. My stepfather also owned dozens of Shelby cars throughout his lifetime and we followed Carroll around to events and gatherings all over America. The Pantera had a 351 Cleveland in it. Newer technology than the '60's era Shelby and SCCA stuff, but because of OPEC, and because of the limited racing history of the Panteras, in those circles it seems anything goes. They were street cars, and fairly de-tuned at that. Their airflow characteristics and port velocities are extremely similar to the 4g63 which is also considered a de-tuned engine in stock form. But at each of these shows, the Pantera crew had the most radical modifications both from a performance and appearance standpoint than any other car that showed up. I've got a video of acetate scans and old DV footage of some of these examples. Watch that video and see what I mean. It's like no two cars even resemble each other anymore. They're all one-of-a-kiind customs now, including the 9,000 mile old original 1973 GT that's featured in it. If you're the only one left in stock fashion... then it's a one-of-a-kind now. It was the DSM crowd in the early 2000's who taught me how to do the modifications I'd spent my life looking at. All the Pantera guys paid other people to do their mods. Must be nice to have money like that.
The fastest car in my family today is a big block 68 Chevy Camaro, and it's a trailer queen. Not street legal. It runs 4.90's in the 1/8, all motor. That cousin laughs at my imports, too. Well ok then. I'm cool with that. Best I've got with my street radials and pump gas is a 7.67, but I don't have to re-pack a parachute every time I stop.
Rocco Croce Your replies are disabled.
It was "Fighting the Valve Clearance" and it's one of the semi-recent Hyundai videos. :)
Great video!
Huge thanks!
I've learned a lot!
i've found it entertaining learning it, dude great job and thanks a lot (Y) keep it up
Outstanding video, thanks!
dude you need to be famous.....
Welcome back serial downvoter.
He about to get it!
Fantastic video btw xD
tiki2777 Apparently he did! It disappeared! You didn't wack him did you? :P
***** we must have spooked him lol
Keep in mind the fact that GoogTube's stupid idea to keep the like and dislike button so close is at fault here. This video has over 100k views. Of those views, a certain number is via mobile devices. Touch, mobile devices. You can do the math.
It's the dumbest thing possible, really, and it's caused by their inability to recognize and fix a known problem where a mistake results in a dislike for every X number of views.
Mind you, for your deal with UA-cam, it doesn't matter if you have + or - (of course, excesses are an issue, but for different reasons) what matters is interaction.
Comments, views, shares, likes being last.
Jafromobile Hello jafro I'm building my first 4g63 really its my first full engine rebuild. I'm trying to degree my cams and I'm having a little bit of trouble. I'm sure ur a really busy guy but if there is any way u could find a few minutes to talk with me for some advice itd be really appreciated and im sure more than helpful. if there's any way to PM me or add me as a friend so we can exchange information and talk cars and parts that'd be great. thanks for your time jafro hope to talk to you soon! :) I'm having a blast working on and figuring out this engine can't wait to hear it running with no worrys as I turn key for first time. Your videos have been very helpful and detailed and much appreciated by me and I'm sure lots of others nice to see a guy who actually knows about the 4g63 and who also takes the time to make the videos so he (you) can spread the knowledge uve learned. Once again jafro thanks for everything you do also shout out to your mentor and teacher Jamie.. the world would be much different and a lot less helpful with out u two. Lol
Love ya guts Jafro, Keep doing what you're doing :)
I see a nice new tool cart there!!!
Robert
Indeed. Yours is nicer than mine! I hope you travel home safely my friend!
I lol when you said that after this block goes you have to start over with a new one. Sounds just like me and my excuse to install my dohc 16v engine into my honda instead of my sohc 8v. Yes the sohc gets over 40mpg, but thats also because I don't use a heavy foot, as their is no point with 95hp lol. But one good thing about this is saving up more money so I can build the dohc. Also when I finish that, I get to start to piece together my turbo kit! yeehaw! Can't wait for next vid from you. Buy those doughnuts and get those guys working! heh.. Oh and don't forget the coffee, later.
Oh I forgot to mention. For the sake of sleepers and the priceless expressions you get on people face. Please use your Hyundai car for the chassis you run all the 4G63's you build in present and future. Thanks. Oh stock wheels also please..(maybe some rigged sleeper wheels if you cannot fit the amount of rubber you need for proper traction ;o)
Thank you for the great video! are you planning to round the edges of the fly cut regions? sharp regions act like nucleation sites for knock to occur
Great video, thank you for making high quality content. :)
love your videos... keep up the good work man...
Another great video Jafro!