can we officially put the weak clutch thing to rest
Originally Posted by turboDan
At 350+ whp your stock pressure does NOT have enough clamping force,period.My clutch had just over 1000 properly broken in miles and was fine,untill the power level exceeded 350whp,then on dyno as the power level increased,clutch started to slip,couldn't even get a good torque reading it started slipping as soon as the boost hit.Was told "your clutch is toast" and told dyno operator that the clutch is almost new.He replied"What kind" and I replied "stock" and the final out come is anything over 350whp and over 350 torque the stocker just doesn't have enough clamping force.BTW,that was 2000 miles ago and only seems to slip a little in upper rpm's in upper gears,heats up a bit,grabs and goes.We will see how long it lasts at E-Town next week at the WRX/STI slaughter.Don't matter as I have a Brandy New one awaiting to be installed,by ME
This would pretty much apply to any car. At 350whp...you're probably looking at at least 440 to the crank...thats a lot of juice to handle!
Originally Posted by webguy330i
I wouldn't mark 350 tq as the end-all-be-all number, but yes excessive power over what the car is engineered to handle clutch-wise will certainly become an issue. 
had no problems,then upped boost,turned on alky injection and on 1st pull at 29 psi
with alky slipped,instantly,that was at only 360whp,then tuned it for some Real power and slipped every pull there after,even brought it up to 5k to start pull,as to be well past peak torque #'s and as power increased so did slipping.Granted,as quickly as it slipped,it heated up and then grabbed again,but disc had already been "glazed" so getting any kind of torque reading was pointless at that point,just was trying to give it a good,Safe tune with as much power as clutch would hold.
See if I can kill this stocker just like I did last years stocker at the Shoot-out,but even still with a clutch that would not move vehicle until 6000 rpm's I still was getting 1.71 60' times, 3 in a row,just reaction times sucked as it is hard to cut a light like that.
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From: Northern Cali
well im not sold on " its in the way you drive", but my clutch is d.o.n.e! i have 15k on it. i launched it several times and drove it aggressive but not hard. i drove a wrx for about 5months so i wasnt a noob to awd and i have been driving stick for about seven years so that isnt it. i honestly think tha clutch sucks on them but i cant say its like that on all of them. i do believe some people got worked with a crap clutch and some people that have loads of shiat done say the clutch is grabbing like they just bought it but at the same time theres people that are stock and there clutch went out the window after a few months ya know? but i do refuse to believe they are all like that, as well as i dont believe that i caused it to slip. i have owned various cars and even tha car i learned on had a good clutch till i sold it. so, just my .02 cents. sorry for tha long post im just sad that my car is so damn slo now, and i cant afford 1800 bucks the dealer quoted.
Last edited by RSVIII; Aug 10, 2005 at 01:46 PM.
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From: Minnesoter
Originally Posted by RSVIII
well im not sold on " its in the way you drive", but my clutch is d.o.n.e! i have 15k on it. i launched it several times and drove it aggressive but not hard. i drove a wrx for about 5months so i wasnt a noob to awd and i have been driving stick for about seven years so that isnt it. i honestly think tha clutch sucks on them but i cant say its like that on all of them. i do believe some people got worked with a crap clutch and some people that have loads of shiat done say the clutch is grabbing like they just bought it but at the same time theres people that are stock and there clutch went out the window after a few months ya know? but i do refuse to believe they are all like that, as well as i dont believe that i caused it to slip. i have owned various cars and even tha car i learned on had a good clutch till i sold it. so, just my .02 cents. sorry for tha long post im just sad that my car is so damn slo now, and i cant afford 1800 bucks the dealer quoted.
Originally Posted by RSVIII
and i cant afford 1800 bucks the dealer quoted.
It all depends not all of the EVOs are the same just like not all make the same power stock same with the clutch some poeple got stuck with a sh**y one some got a good one i dont know i replaced mine at 10,000miles
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From: In Hell, but making my way out
Originally Posted by twinevo
I must say that was my main concern a year ago when I started doing research on the evo. after 20,000 miles and the clutch feels as strong as mile 1! I've launched it hard 3-4 times and drive aggresive as hell every day. I also am seeing less and less posts on evom about clutchs going out. I guess it was just the 03's that got the bad clutchs.
2004 is just as bad.
IMNSHO, if you're not drag racing the car every weekend and your clutch lasted less than 20K miles, then you NEED to get driving lessons. 
31K on stock clutch, still going strong.
l8r)
31K on stock clutch, still going strong.
l8r)
Originally Posted by webguy330i
Yeup, 42k on the stock clutch and she's fine, and that's with teaching two girls how to drive stick on it and countless days of tarded driving.
you had 2 GIRLS learn how to drive stick on your evo 