Well, it turns out that when I replaced my tranny a while back, I used the wrong throw out bearing. Apparently mixing an S5 clutch slave cylinder with an S4 throwout bearing leads to slipping. As I understand it, with the clutch out all the way, the cylinder is basically "bottomed out" right now.

Anyway, I'm going to swap out that bearing for an S5 one, but I also have this used ACT clutch sitting around and I'm wondering if its good enough to throw in there at the same time. The clutch plate is fine, except for a small groove worn on the fingers (the previous owner obviously had a bearing seize up). The disc is my main concern. All I want is about 3k - 4k miles out of the thing before I throw in the T2 drivetrain I have sitting here.

 

She looks pretty meaty to me. Don't suppose you have a dial caliper or similar to measure the depth? I'd go ahead and use it.

 

That clutch looks good to me...

However.. I don't think its the slave cylinder.... slave cylinders have same part numbers from 86-92, unless the slave cylinder is stuck OUT so that the release fork always has pressure on the release bearing????, in which case its time for a new slave cylinder or a rebuild on that one

There is a difference part number for Turbo to Non-turbo...... Did you put a turbo trans in the car?? (but i HIGHLY doubt THAT has anything to do with it, since the spline are different on the input shaft)

Is the fork bent????

 

Well, I had two different bearings when I swapped the tranny. The tranny was S4, the slave was S5, and the two bearings were obviously different. One was a couple milimeters taller than the other. I posted here, and everyone said they're the same. So I put the taller one in because it felt like it spun smoothest. Before, with the old tranny, I didn't get any clutch slippage at all.

Then there was a thread on improvedtouring.com that said that the slave cylinders and bearings are matched to go together. This makes sense to me, because the clutch still grips, it just doesn't start to grip until the pedal is almost all the way out.

BTW, I had't even thought about the clutch fork being bent. I'll have to check that out too.

 

Well now I'm pretty convinced that the problem is not the throwout bearing. The clutch I pulled out looks horrible compared to the clutch pictured above.

 

yea the 1 with the wierd lines in it mine was the same way! People told me i probebly rode my clutch...but i dont...are those lines regular for standerd wear on a clutch?

 

I'm not sure. I don't ride my clutch either, I always downshift and heel toe. Its probably the original. I've only had this car for about 6000 miles. The car has 110000 miles total.

 

That is not an ACT disc at all! It doesn't look worn out though.

 

"Dirk Starksen
President/CTO
Advanced Clutch Technology Inc "

a little bit off topic but....

dude, your clutches rock!! I have one and I'm really pleased with the feeling!

 

look at this AWESOME clutch the last owner put on my 7.... i was slipping so bad it took my car about 2 blocks to get up to 35mph








as you can see, money wasn't an object for the last owner of my 7 haha.

 

the lines are just the fiber material the clutch is embedded with, it is normal to see them once it is worn. obviously the disc you pulled out is junk because the friction material was worn down to the point that the rivets were grinding on the flywheel.

the other disc still looks good but i wasn't aware that the t/o bearings were different, it is probably just an old pressure plate that lost it's grip.