901 pivot point for clutch release arm?

[Christian Guthrie]

Can anyone tell me if there is a difference between the screw in pivot for a 911 and a 912? I removed my original 901/0 and installed a 901/2 from a 912. I swapped over a bunch of items including the release arm and the throwout bearing. I did not transfer the pivot point from the 901/0 to the 901/2. The problem I am having is I'm running out of throw to get the correct adjustment. By increasing the adjustment, I am merely adding pre-load of the clutch with no change of the clutch engagement point. Thanks for the help, I thought I would ask before removing the engine/trans.
For reference, 1965 911 with a 2.4 (original engine/trans safely tucked away for the future restoration)

[kllr901]

I don't know exactly what parts you are using (flywheel,clutch PP, bearing etc...) But you can raise the "pivot point" (ball stud) with shims (not too much) but a small amount will make a difference in the amount of throw.

[911quest]

Was the bushing in the arm ok? Are you running out of threaded adjustment? They orginally had a specific nut that had a long tube attached that gave you more room for adjustment I have found this to be missing on a few cars in the past

[Christian Guthrie]

Thanks gents! I assumed I should be able to shim up the pivot however I could not find any reference in my Porsche shop manual. I think shimming the pivot will resolve all of this. What would have required the pivot to be shimmed? Prior owner re-surfacing the flywheel?
Tony, I do have the special nut but I run out of throw before I run out of adjustment.

[ibmiked]

Christian,

I am also using a 901/02 with a 911 motor. Interestingly, i do not have enough throw either. It's barely noticeable, but makes itself known when i come to a complete stop and then shift into reverse (no synchro in reverse). I was about to make another adjustement but this is the first I've heard about a different pivot point.

I'll be watching here for more answers so thanks for posting.

Cheers,
Mike

[Christian Guthrie]

Hi Mike
That is my issue as well. The clutch lets out right the top and no way for reverse without grinding the gears. The adjustment was at a different location on the cable with the 901 I removed which is how I arrived at the pivot being the issue. I plan to remove the engine/tans soon.

[ibmiked]

Boy would I sure love to hear from Ed or Marco about their thoughts on this....

[TEC69E]

Are you referring to item #2? Not sure what you mean by adjustment vs. throw . . . can you tell more?
By the way . . . lots of good info on this topic over at pelican.

[Christian Guthrie]

Hi Tom
Yes,#2. Regardless of where you have the adjustment, the clutch will not disenage enough to choose reverse without grinding. I just found a great post from Pelican. Thanks.
http://forums.pelicanparts.com/porsc...pe-clutch.html

[TEC69E]

Christian, Yes I learned a lot from that thread too (lol). It turns out I installed the throwout bearing without installing the shims (#6) . . . that was the cause of my problem. In addition, my flywheel was just fine (even after it was resurfaced) . . . my machinist has been on my xmas card list ever since. Hope you find the solution to your adjustment issue soon. Regards, Tom