How Much Horsepower? Clutch Slipping

[Tomeygun]

I received my new cerametallic disc today, pulled the transmission (Wow! What fun). Found clutch burned badly. I'll have the flywheel resurfaced tomorrow and put it back together. Hopefully no more slippage.

Sorry to hi-jack thread...



But I finally stacked my TST with an EZ tonight, and on the way home, I dumped it at about 2500 in 2nd - power shifted to third - then to fourth (much to my amazement, still spinning) -- BUT moved only about 15 feet,



Well I paniced and back out at 3100 rpms (35 lbs boost)... yep, barked the turbo real bad... I'm think'in I must have blown thru that clutch ??



1) what is a good comparison to what a burning clutch smells like,

2) what is a reliable way to test for slipping clutch?



After that happened, I tried putting it in 5th gear and from 1000 rpms on, I stomped on it, From what I could tell It just gripped and went



I hope I was just roasting the tires, But it was dark and the darn exhaust is so loud, I could not hear the tires sqeal, NOR did I look at the speedo



darn me and my childish behavior

 

[jwilliams3]

Mark,

I think its more of your crazy driving habits that hurt transmission's rather than dual disk clutches in general.

Many midwesterners drive DD's every day with minimal issues.

 

[banshee]

Tomey,



The easiest way to check clutch strength is to put it in 6th gear, get it to ~1500 RPMs, and then stomp it to the floor. If it's gonna slip it will slip there. In your case I think you were just burning rubber. The lower the gear you're in the less stress the clutch "feels", so you should be good to go... . for now



John

 

[South Bend Clutch]

JCarroll...



I would highly recommend not putting your clutch back in without replacing the pressure plate. The diaphragm in the pressure plate once heated can loose its clamping power and I am sure it is also grooved and will make seating the new disc very difficult as well as shortening the over all life of the clutch.



Good luck



Peter

 

[Mark_Kendrick]

Mark,

I think its more of your crazy driving habits that hurt transmission's rather than dual disk clutches in general.

Many midwesterners drive DD's every day with minimal issues.

That truck had HUGE EDMs, Huge DVs, B1-BigBrother Twins. When I sold it I detuned it. . Honed 370s , stock DVs, and hx35-HT3b Twins... It pegged a 1200ftlb dyno before 2000rpm and made 586rwhp.



It was making 80+psi on the Big twins with a 16cm seconday housing and a 2" NewGen wastegate. It wasn't driving, it was power



I build them to be driven... HARD!!!

 

[Tomeygun]

Tomey,



The easiest way to check clutch strength is to put it in 6th gear, get it to ~1500 RPMs, and then stomp it to the floor. If it's gonna slip it will slip there. In your case I think you were just burning rubber. The lower the gear you're in the less stress the clutch "feels", so you should be good to go... . for now



John

Well good, I was a bit worried -- I did try the "stomp in last gear" thing, and I did not feel any slipping... I guess I was just amazed that I kept the burnout thru the 3-4 shift



I think my exhaust is angled towards my right tire, I wonder if that helps the spin?



PS - what everyone has said about the EZ-TST stack is correct, I will never go back now