rufrob

Happy 2020 to all Rennlisters. I wish you all happy/trouble free motoring.
I did the clutch on my 86 last summer. I don't drive the car. While moving it recently it feels like the right rear is binding. I hear a thump when the clutch engages for forward motion not rear. When I put the car on jack stands the noise and feeling is gone and the rear wheels both spin freely in and out of gear and by hand. Parking brake holds and releases.
I checked the cv joints are torqued and no unusual slope in the transmission.
I changed the clutch due to chatter in reverse which was caused by a lip worn onto the guide tube.
I did some searches which don't match my symptoms.
Could it be the transmission mount?
Thanks.

gpr8er

just a thought but, did you reinstall the washers between the brake caliper and mounting boss? It's really an oddball setup that Porsche used but it might explain the problem.

Dan Martinic

Sorry, I can't diagnose your issue.. but.. I'm curious: what do you mean that a worn guide tube--I assume you mean the one attached to the inside of the bellhousing ie. throw-out (release) bearing rides over?

Wear on the guide tube can cause an issue in reverse gear?

rufrob

Yes. The disk would catch unevenly thus causing the chatter.

Humboldtgrin

To add your e-brake pads may be failing or out of adjustment.

rufrob

Thanks for the reply. I'll check the E-brake pads. But why would it work find off the ground and bind on the ground?

jimbo1111

I started hearing a thump just after I installed m030 swaybars. I suspect it might be that the bushings need grease. If you get to it before me lmk if that works.

rufrob

Hi. I checked the cv joint play and grease. E-brake system all fine.
Filled up all the tires which were low it seems better. I think it is the aftermarket clutch disk. I had a similar odd pickup feel when I put the same aftermarket clutch disk on my 930. It improved with use. Guess I need to drive the 951 like I stole it.