[MITCHM]

I just finished replacing all the clutch components in a 99 Boxster with 106,000 miles.

The flywheel, clutch disk, pressure plate and all the clutch parts in the bell housing have been replaced. After 106k the clutch was starting to slip at 60 MPH.

With the car on jack stands and the clutch depressed I can slip the transmission into first gear with a little resistance but the wheels start turning and continue to turn with the clutch pedal up or down. The clutch pedal also do not fully return to the up position without pulling it up by hand.

I spent many hours and over a quart of brake fluid pressure bleeding the master and slave cylinder to no effect. To eliminate the hydraulic system I pulled the slave cylinder out of the transmission housing and blocked the push rod so that it could not move. When I pressed on the clutch pedal it moved less than a 1/4" and no further. That says to me that there is no air in the system and the hydraulics are working correctly.

Is there anything else that I can look at before I remove the transmission and look for what may be wrong.

The way I see it. One of three things could have happened. I could have installed something wrong which does not seem likely since the 1999 Boxster clutch disk can only be installed one way. One of the new parts has broken or one of the new parts is the incorrect part.

Any other suggestions?