Clutch Problems

[JayB12]

Okay, so a few weeks ago I got my car up to about 30psi tuning and the clutch started to slip on colder nights, it was an act2600/street disk which had been great for the last 10k miles. I figured I had just pushed past the TQ rating on it so I pulled it out and since I am low on cash I saved up and just got a new southbend kelvar disk and popped that in. I had not bled the clutch, since I have a stainless line I just moved the slave out of the way. I adjusted the clutch and it was engaging nearly at the floor and had to switch to a 2g master rod to get the adjustment correct (after watching Jack's Trans tutorial vid) so it is just about half a turn off keeping the slave from going back by hand. But it still didn't pass the clutch drag test, the car moved forward at 6-6500 rpms. But I wasn't sure what to do from there so I put about 200 miles on the clutch like that. Now, I had swiched boost control types and had to restart going up in boost again and now the clutch is slipping at only 20psi, with not nearly as much power as before.

I am not sure if that dragging is causing the clutch to heat up and slip or the pressure plate was half of the problem initially or what.. I'm frustrated, low on cash and just can't afford to just thow parts at this thing and hope something works..

 

[jed344]

How did the pressure plate and fly wheel look?

 

[GRNDSM]

How did the pressure plate and fly wheel look?

Never reuse the pressure plate without first putting a straight edge across it! I bet it is beveled. So now that you have a new disk only 40% of the pressure plate is making contact with it (old disk was shaped opposite of the pressure plate, so it was making a better contact). For the same reason, it is failing the "drag test". You need a new pressure plate, or have it rebuild by ACT.

 

[JayB12]

It probably was pretty worn, I knew I should have done that to begin with but was just hoping this would work out. I have the disk here still in my garage and it is beveled.

Should I just buy another 2600 PP or go with a 2900? I also saw Comp Clutch kits at nearly the same price as an ACT PP, What about their Stage 3-4 Kits anybody?

Car probably makes 400+ wtq and is 3200lbs. Wanted to keep something that performed well on the street and doesn't launch very harshly at the track, which is why I didn't go with a puck style clutch or twin disk.