Jay's Tech Tips #48: Piston Failure Diagnostics - Real Street Performance
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- เผยแพร่เมื่อ 2 ส.ค. 2024
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It's important to diagnose your pistons in your engine. Today, Jay walks us through some of the failures on several different applications. If you find this kind of content valuable please drop a comment with what you would like to see in the next video.
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Have missed my jays tech tips :D
More to come!
Gotta love these informational videos, the more people aware of how their machine is performing the more people able to be out enjoying and racing their machines.
Thats what its all about Schmitty! right on
Christmas came early boys! Thanks for the awesome video Jay/Real st
Hey thank you for watching Cody!
love these more technical videos! keep em coming! maybe some drift tech, ways to attain more steering angle from stock componets?
Thanks for the support Mike, we have more coming
Glad Jay's back doing these. I really appreciated his kind and thoughtful incites on a recent 2jz issue I had. What a great resource.
Thank you!
Always good to see Jay dropping more knowledge! Thank you for the video
Thank you for the support Edmund
Had me laughing when he said this some of my handy work...I dented this piston.....lol
Thanks for sharing very educational
Nice Jay... glad to see these going again....🏁
hey thanks for that craig. feels good to be filming again. thanks for watching and commenting. I appreciate it
Very interesting and informative. Thanks!
Thanks for the tips Jay. I always look forward to your vids
That means a lot. Thank you. We have more on the way. Thanks for watching.
Thanks Jay for sharing your knowledge
Thanks for watching Luke. I appreciate the comment.
Love the post-mortem on these pistons jay. thanks for the info
Thanks for watching and commenting!
Glad to see a new video. Looking forward to more.. With these little bore cameras so affordable these days, would be nice to see a video of signs to look for in the piston chamber that tuning is not on point and a failure is around the corner. Can the top of the piston show that? Thx
Thats a great question, we will put that one on the board. Stay tuned, we have more on the way. Thank you for watching.
Awesome tech video as always. Thanks boys
You are welcome. Thanks for watching and dropping the comment. We appreciate it.
Excellent content 👌
Thanks for the support. I appreciate it
Yay more Tech tips videos
👏🏻👏🏻👏🏻
Got to love a good “Money Shift”
Nothing better!
My 2jz broke a rod, looked exactly like the second to last. As well as windows on both sides of the block
ouch, did you end up rebuilding it?
@@realstreetperformance in progress, it was 2jz swapped Mk3 Supra stock long block, s366 on e85 with headstuds made 764/742tq at 34psi on a mustang dyno. Overboosted and went from 3k to redline in a split second. New block is getting Manley I beam rods and Diamond pistons. The electronic boost controller didn't respond quickly enough and the new waste gate basically didn't open even with a boost cut in the Haltech elite
@@david92xj Ah, well good luck with the rebuild. Let us know if there is anything we can help with.
@@realstreetperformance thanks! Some of the parts for my build came from you guys and I've got your sticker on the car 👍
@@david92xj Man, thank you for that David. We appreciate it. Thanks for letting us be a part of your build.
Curious on your thoughts regarding ceramic coating the crowns on oem 2jzge vvti pistons....mates and I wanna see what they can handle.....
Just to satisfy a curiosity? Or for some other reason?
@@realstreetperformance Have a bet going. I maintain with a solid tune, they can handle 700rwhp with a ceramic coating....thoughts? He has a gs300, I have a forged big single 2j in my 300zx slicktop. He wants to get as close to my 825hp@36psi. I think it can be done, he doesnt.
Watching from Antigua #268
awesome, thanks for watching and commenting Keriesen
Last piston is there just in case you have blown so many that you have forgotten what a good piston looks like.
Jay I bought some second hand CP pistons from a friend of mine he was drifting and slung a rod bearing...the skirts of the pistons are the only damage I see..they have surface scratches..should they be fine
For the pistons that failed do to Detonation. Would the a AEM wide bad af gauge safety
features help prevent this?
Great content here....Can Jay please comment on what the limits of the stock GTE piston are.
Hey Neil, we get that question a lot so we actually wrote an article about how that answer is a sliding scale and not a static number. Check it out here. www.realstreetperformance.com/blog/how-much-will-a-stock-2jz-hold/
Hello on a motor 2.0 écoboost Focus st in setup stage 3 with an hybrid turbo , internal forged engine, my problem I have the skirts pistons that crack I boost at 30psi fuel E85, I also have the Bearing of Rod King Racing which Fade, engine oil is Motul 300V 15W50, can you tell me why the pistons fooled
I love these tech tips! Is 11.5:1 too much for 800hp k24 turbo on e85?
Thanks for watching and commenting. "Too Much" is going to be kind of a sliding scale here in this case. The higher you go on compression, the smaller the window becomes for success. The higher the compression, the less likely it will be to survive a bad day or detonation. Many people turbocharge 11.5:1 compression K-Series, and there are enough people doing it successfully that the community will tell you it is totally fine. And it is as long as your tuning is dialed in to prevent knock. Now ... the quality of pump E85 can vary throughout the year. So if you get a particularly poor batch of pump e85 and run 800whp worth of boost through an 11.5:1 engine, you are more likely to encounter detonation than if you built a 10.0:1 engine. So unfortunately there isnt a "Yes or no" answer to "is it too much?" It's fine until it isnt. If you monitor fuel quality and make sure the tune is dialed in and check the plugs for detonation and keep it out of detonation it will live at that compression and power level.
@@realstreetperformance thank you.
Also do you guys stock oem 2jz vvti valve spring seats? .5mm thick, i.d. 18mm, o.d. 28mm? Cheers
No sir, I don't have any OEM seats here at the moment.
@@jaymeagher1510 All good buddy thanks for the heads up 👍
So I your opinion what is the max safest hp or torque numbers that a 2jzgte vvti with stock rods, pistons and block can handle safely on a daily driven car
Khalid, that is a question we get just about every day. We actually wrote an article explaining why that question doesn't really work as the answer is a sliding scale. Check it out here www.realstreetperformance.com/blog/how-much-will-a-stock-2jz-hold/
If you are asking "what power level can i set a stock engine to so that it will live for longer than I intend to own the car for so i never have to rebuild the engine" I would ask how often you plan to beat on it. I have seen people that race their cars every single day with less than 800hp throw stock rods on a 6766. Then I have seen people make 1000hp on a stock block for a dyno pull and then never floor it again and it lives forever. So if you asked "what power level will it last forever at if i want to beat on it every day" a safe bet would be probably not much more than double the factory output. Maybe 500-600
hey jay i have a piston and rod that were damaged at the wrist pin, im still unsure as to why it happened.
Do you have any pictures of the damage? Was there any traumatic event that occurred when it happened like taking water into the engine from the headgasket maybe? How much power was the engine making and what type of fuel was it on? If you dont know how much power it was making then I could make a decent guess from the turbocharger size and boost level. Its possible you overpowered the pin, its possible you had a high cylinder pressure event from detonation, or its equally possible that something else is going on.
@@realstreetperformance yes i do have some pictures, it was a na build but the pistons and rods came from a boosted setup, mind you both were on my stages of learning tuning on hondata. it was a k20/24 setup wiseco 11.1 pistons no oil squirters, engine was all good for about 2k miles then i started hearing a faint knock and determined it was on cylinder 3 once i opened it i noticed the wrist pin damaged.
@@realstreetperformance i sent the pics on a instagram message.
@@Boostlee what size turbo and how much boost? Also what fuel was it running on at the time and how many wide open throttle events happened in that 2000 miles?
@@realstreetperformance it was on e85 both on boost and na. it was rotrex c38-91 supercharged on 22-24 psi plus 50 shot at sc impeller. on boost fuel pump let go and block got hairline cracks on all cylinders division. pistons and rods looked visibly ok so i reused on the na setup, revving to 8600 and i did 40-60 pulls on it.
Hey man how can i get ahold of you??? I want yu take a look at my piston and lmk how can i fix and whats the issue??
Jay@realstreetperformance.com shoot me an email!
Hey i'm over seas fro. Us and i want to ask so many stuff for my build where to contact..and if you have messengre
Hi, You can visit our website and talk with us through there.
Realstreetperformance.com
We are happy to help, Thanks!
no just blame the tuner