does anybody know what the maxium whp is that the evos drivetrain,
i.e., lsd and differentials can handle on a day to day basis of launching granted if the clutch has been upgraded.??

cause i am hearing mixed thoughts.
like the evo's differentials can only handle a maxium of 280whp
others have told me 250whp max...

so i am confused

 

For one thing, dyno numbers vary from one person to another because of the difference in the dynos, the cars, temp, etc. So don't be surprised to hear a lot of variance. As for the drivetrain limit, I like to hear what the experts say. I'm guessing around ~350whp.

 

Are you kidding me? The driveline parts can handle a ****load more power than 350. The limiting factor is how you drive/launch it. Most if not all the fast DSMs use the stock drivetrain, and while there is some breakage, for the most part it is rock solid. However, anything that shocks the driveline (dumping the clutch, no lift shifting) will cause it to fail prematurely. I would let the drivetrain be the last thing you worry about on your Evo.

 

"The limiting factor is how you drive/launch it." EXACTLY. The original poster said "handle on a DAY TO DAY basis of launching granted if the clutch has been upgraded". With a upgraded clutch, the drivetrain is going to take all the abuse. So reconsider your "Are you kidding me?" remark. Also, I would think the diff's would go first.

 

then the answer is stock...upgrade your clutch and launch everyday...u will eventually blow the diffs or somethin....with the right driver the stock drive train should hold up against 400 whp

 

That's a fair assessment. Perhaps the drivetrain is rock solid, but constant launching imposes a tremendous strain. For a car and drivetrain that was meant to be under WRC rules, 350+whp is probably too much. Clutch would go first, then the diff's. After that, the tranny. I think only a few people on this board got to that point. I know Shiv from Vishnu blew his rear diff in his 500+hp stage 2 Evo.

 

Remember how much more torque those WRC guys have though...for them it's not about peak hp, it's about broad usable power...

 

Very true. And also remember that they can change clutch, diff's, or tranny for that matter after ever stage. We'd have no problem if we can have that everyday.

 

any launching is going to add alot of stress to the driveline.. that drive train simply isn't made to be launch.... However it will do fine and i'm sure it will handle well into the 400 hp range, as long as your tires don't stick and do give off the line... But if the tires stick your mostlikely to brake the center diff

 

call shepracing.com and ask them... john has said that the tranny can hold about 550whp without upgrades. The tranny has no problems its the transfer case that wants to pop...

-non

 

I just got my Cusco put in from Z1 Auto. (Thanks Adam). Im concerned about this also. I don't drag race much, if at all after this. I figure as long as Im easy on the car (fairly) and take caution not to grind gears or launch it ridiculously, it should be OK. These cars ARE stout. I just got my tranny rebuilt too....God I love my car.

 

why did you get your tranny rebuilt???