so i was just wondering when the stock clutch becomes too weak? ive been at about 200hp200 tq and im just wondering how much ppl have gotten away with... i only look to push abot 250... i know it needs a stronger clutch but hey ive learned if its not broke yet dont fix ot lol

I wanna say it's more than that. What kills it is when launching hard when your making more power - i know that's a vague statement. I feel if you know how to drive and don't abuse the clutch, it will hold more power longer than if you are tracking it or just plain don't know how to launch the car even in daily situations.

then why did my throwout bearing fail causing the pressure plate to snap all the springs?



JBO Stickers are back!!!! Click Me!!

I have been beating on my car with a 75 shot of nitrous for awhile now, about 20-25 bottle refills give er take.. The oem exedy has help up GREAT, hasn't slipped once...



13.520 @ 98mph! 220whp 234tq

My stock replacement took 325/323 for 20K miles... some how haha.

well i plan on stopping at the 250 mark its at 200 now all i need is bigger injectors... it was a brand new gm clutch... its prob got about 10k on it now so i just dont wanna hit 250 on the dyno and the clutch go id be dissapointed..... i plan on getting a spec stage 3 but thats after winter... i dont really launch much even at 200 it spins alot so no need to destroy tires....

Brad (flatblackfire) wrote:then why did my throwout bearing fail causing the pressure plate to snap all the springs?

IDK, but i don't think the throwout bearing has much if anything to do with how much power or torque a clutch can "hold". I believe most aftermarket clutches us an OEM throwout bearing.

To the OP, i think you should be fine.

Vince, did it die after 20k miles or did you switch it out? That is impressive either way, knowing that you frequently track the car. One could probably expect more daily driven miles than that even!

john zappernick wrote: i plan on getting a spec stage 3 but thats after winter..

i feel sorry for you.... go with the clutchmasters fx400 instead....


Ryan, you tell me if it was gone




car wouldnt move under its own power any more haha. I had a LOT of 1/4 mile passes on it as well as just plain old beating the hell out of the car. I drive it HARD.

and new hotness!






Edited 2 time(s). Last edited Saturday, July 30, 2011 7:36 PM

Wow that clutch was WAY GONE!!



FU Tuning

$125 with slave brand spanking new... I was shocked it really lasted 20K miles.... but for the $125, i got every penny worth of it. Took TONS of abuse and 1/4 mile passes.

whats so wrong with spec? ive heard more ppl say centerforce and clutchmasters are garbage than ive heard bad about spec... i want a spec cause its a dd street car it barely sees a track.. i need a sprung disk and i cant see spending 700 bucks on a clutch for 250 hp

john zappernick wrote:whats so wrong with spec? ive heard more ppl say centerforce and clutchmasters are garbage than ive heard bad about spec... i want a spec cause its a dd street car it barely sees a track.. i need a sprung disk and i cant see spending 700 bucks on a clutch for 250 hp

from what i understand they are not consistant. i would just go with exedy if possible

john zappernick wrote:whats so wrong with spec? ive heard more ppl say centerforce and clutchmasters are garbage than ive heard bad about spec...

HAHA who have you been talking to?

john zappernick wrote:whats so wrong with spec? ive heard more ppl say centerforce and clutchmasters are garbage than ive heard bad about spec... i want a spec cause its a dd street car it barely sees a track.. i need a sprung disk and i cant see spending 700 bucks on a clutch for 250 hp

Very inconsistent engagement. I got to drove one once and couldnt stand it. It never grabbed in the same spot.




its an old concept. time for something new to take the reigns. - Z yaaaa

Do NOT get Spec. Absolute piece of GARBAGE. I had a stage 2 which was junk and would slip. I changed to a stage 3+. It chatters obnoxiously and the engagement is NEVER at the same point. It is absolutely horrible to drive. I will never, ever buy another Spec clutch in my life.



2010 Subaru Impreza WRX Limited
1999 Cavalier Z24 Supercharged
1999 Grand AM SE (Beater Car)
1997 GMC Sierra
2007 Honda CBR 600RR
2005 Honda TRX450R

I'm on the stock factory clutch and somewhere between 200 and 250 hp. Been boosted for the last 20k and the previous 80k was all stock and mostly a different driver. Never slips. And it gets launched hard at the auto-x. I've only smoked it once, didnt like a 4k launch in 2nd gear.


1994 Saturn SL2 Home Coming Edition: backup car
2002 Chevy Cavalier LS Sport Coupe: In a Junk Yard
1995 Mazda Miata R-package Class=STR
Sponsored by: Kronos Performance

WPI Class of '12 Mechanical Engineering
WPI SAE Risk and Sustainability Management Officer