clutch slipping??

[Tom25666]

ok. i think my clutch is slipping. redtop in s13 pretty stock, it's really slow in higher rpm's. like 65 to 95 (95mph at 4k rpm) wot in 5th takes like 45 seconds (timed with video camera). 0-60 times are way down (like 13 sec on a hard launch shifting at 6.5k). also there is pretty strong vibration for a couple seconds right after you let off, would that be from a clutch grabbing and slipping over and over very quickly?
sound like clutch slipage to everyone?

[S14_Kouki]

OK a clutch slipping would be like you go WOT and you go nowhere but your car revs

[cotbu]

Yeah... The rev climbing at WOT, is the sign I use to replace a clutch. I have a dyno graph with a dip indicating a slip at full boost, then holding till 7000rpm. 1month later RPMs start climbing and I go nowhere. There are some tests you can do, but you have to know your car. 5th gear test, if you let the clutch out more than half way and she still runs, or 50mph cruise then punch it in 3rd, RPM should climb with speed, but mine would shoot up.

EXEDY stage 2 latest one year!

[GSXRJJordan]

Could definitely be the clutch going. Usually, I feel it because the clutch will 'start' to engage very low in the travel, but not 'fully' engage until the very top (or not at all).

Originally Posted by cotbu

Yeah... The rev climbing at WOT, is the sign I use to replace a clutch. I have a dyno graph with a dip indicating a slip at full boost, then holding till 7000rpm. 1month later RPMs start climbing and I go nowhere. There are some tests you can do, but you have to know your car. 5th gear test, if you let the clutch out more than half way and she still runs, or 50mph cruise then punch it in 3rd, RPM should climb with speed, but mine would shoot up.

EXEDY stage 2 latest one year!

Agreed, for a stock-ish SR (up to about 300hp), the Exedy Stage 2 is a great clutch.