Why So Many Evo Owners Blow Stock Engine?
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Joined: Aug 2006
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From: Bay Area
Originally Posted by Spooldyou
WoW, long and behold the Armpit of EVOm.
Thanks Guys for making us look like drooling special kids. We appriciate what your doing for the community.
Thanks Guys for making us look like drooling special kids. We appriciate what your doing for the community.
My wife was reading this thread over my shoulder and I quickly collapsed the page as if she caught me browsing ****.
I cracked my ring land on the #4 piston running TBE and AEM EMS. I think the fuel system gave out. Ran great for one month, then a lean condition caused detonation. Its my fault for not installing the Walbro sooner. I posted the pics back in April.
Originally Posted by althemean
I cracked my ring land on the #4 piston running TBE and AEM EMS. I think the fuel system gave out. Ran great for one month, then a lean condition caused detonation. Its my fault for not installing the Walbro sooner. I posted the pics back in April.
Originally Posted by Mach V Dan
I do have to comment that I've seen some unusual piston failures on Evos. On most cars, the ring lands will break up and result in compression failure. But on at least two Evos I've seen pistons cracked in half, a straight line right across the top of the piston. It makes me wonder if the Evo pistons are not as strong across the piston face -- or stronger in the ring lands than most.
Anyway, I agree that detonation breaks engines. And trying to squeeze 350+ out of a stock motor on pump gas WILL result in detonation. Even with methanol, 370 awhp is huge power, and one detonation incident could be catastrophic.
--Dan
Mach V
MachEVO.com
Anyway, I agree that detonation breaks engines. And trying to squeeze 350+ out of a stock motor on pump gas WILL result in detonation. Even with methanol, 370 awhp is huge power, and one detonation incident could be catastrophic.
--Dan
Mach V
MachEVO.com
I agree, I have seen stock pistons also split in half in a strange way, however, thankfully the failure rate is very low. On one customer's car the piston was split directly down the middle in a clean split from side to side and the bore was 100% perfect.
The evo piston and rod bearing seem to be the weakest links in an otherwise very strong motor.
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From: Work - New York, Alaska, Mexico or the Caribbean. -Home - Tx Hill Country
Originally Posted by TTP Engineering
Exceeding the physical limitations of the rods is the next step in a Evo tuned to its stock motor limit.
When the bearings look perfect but you have this problem, you have too much power and torque, period.
When the bearings look perfect but you have this problem, you have too much power and torque, period.
Originally Posted by -=SPECTRE=-
Why My Car Always Explode And Burn Me To Death It Hurt Very Much To Burn To Death And Witchdoctor Bills For Resurrection Very Expensive Evo Sux Thanks
I'm pushing over 400 Whp reving to 8K on stock springs and retainers and never had a problem. plus I have just about 60K miles on the all stock internals. no meth just bigger turbo. I change the oil at 2800-3000 miles and keep up with all the maintence. meth is for drag racing not everyday driving. my egt's are super low because I have better air flow. running the car too lean will kill a motor fast.
Originally Posted by yesevo
I Want To Have 3''tbe And Intake And Get Tuned On My Evo 9 Mr....but I M Afraid To Do So, Because I Would Be Pushing Like More Than 370whp By Just Doing This Simple Mods.....
hawt damn the marketing hype here from a certain tuner really works
Originally Posted by yesevo
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I JUST WANT EVOM PEOPLE TO KNOW THIS ! AND I CANT BELIEVE LOTS OF EVO S ARE STILL RUNNING FINE..,., EVENTUALLY IT WILL HAPPEND TO ANYBODY OUT THERE....
AND I NEED OPINION HOW SHOULD I MOD SAFELY ON MY EVO9 MR
I JUST WANT EVOM PEOPLE TO KNOW THIS ! AND I CANT BELIEVE LOTS OF EVO S ARE STILL RUNNING FINE..,., EVENTUALLY IT WILL HAPPEND TO ANYBODY OUT THERE....
AND I NEED OPINION HOW SHOULD I MOD SAFELY ON MY EVO9 MR
Originally Posted by kipper215
that looks like pre-detonation not too much HP.
There is no such thing as "pre-detonation". FYI.
Originally Posted by streetrodstuff.com
Confusion and a lot of questions exist as to detonation and pre-ignition. Sometimes you hear mistaken terms like "pre-detonation". Detonation is one phenomenon that is abnormal combustion. Pre-ignition is another phenomenon that is abnormal combustion.
Last edited by TTP Engineering; Sep 15, 2006 at 03:40 AM.