Even after you clean it, the O-ring of the OEM CSC will still deteriorate. I sent Joe the failed OEM CSC for additional analysis. Maybe you can try to rebuild it with new seals.

The first HD-CSC was fine, but there was a thick layer of soot due to clutch disc burning up from rubbing against the flywheel. It was gross, so it necessitated replacement. I went ahead and ordered a new master (first one already failed in Houston after getting the new turbos and clutch kit installed) and HD-CSC. The new transmission had 5th gear issues after a month so they ordered a new one. I figured the new one didn't have much miles so it didn't need replacement.

So did you pull your transmission at your house??

I seriously doubt that if flushed well. Rubber is not going to deteriorate for the sake of deteriorating if properly cleaned. There was a pretty high rate of failure on factory CSC's and I'm sure if you tore a failed one apart, the O ring might very well be the culprit but that is not a apples to apples comparison.


Denny

Yep, and the engine also.

Denny

I've torn lots of them apart, Over 50 actually and these are just the ones I received in one piece. A lot of them just break when the release bearing itself breaks off its plastic mount, That's if the seals lasted long enough for this to happen.


If you flushed it out with any kind of solvent you most likely got in on/in the release bearing also which will wash out the grease in it causing the bearing to lock up which spins the entire housing breaking/melting it off the front of the CSC.
Save yourself the trouble and NEVER reuse it, Unless of course you like tow trucks and pulling your trans for fun..

http://sphotos-b.xx.fbcdn.net/hphoto...79930144_n.jpg

Some good info Joe - Thanks:tiphat: