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Originally Posted by Ultramaroon
Very nice! Unfortunately, the squeak will return. I'm not happy with the design of the spherical joint. It could be argued that it's just good enough for warranty but I'm not a fan.
The ball is flat on its face. Gun to my head, I would guess that it's to limit the contact surface for tolerance and to control wear. The problem is that, over time, the contact ring of the socket wears down, leaving a raised shelf in the center. The ball begins to catch on that shelf and let go as the clutch is operated through the catch. That's where the creak comes from on release. As it continues to wear, re-lubing helps less each time.
Here is a picture of one I took out of service at less than 20 Kmi. It was before I really understood what was happening so the shelf isn't yet apparent.
Last summer I reworked the fork that I am still using by grinding away the shelf enough to leave in its place a slight cavity. Then I used valve grinding compound to lap the mating surfaces. It has been nice so far. We'll see.
A more expensive solution would be to use a bronze insert in place of the formed socket. That's the kind of detail that makes a Porsche what it is.
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I see, this makes sense and is consistent with mine where the noise is louder during the pedal release. It was at a point where you could feel the pivot grabbing as you modulate the release of the pedal - sounds like it's going to be a thing we MT owners have to live with.
Thinking about it - it's the lubricant that also prevents wear from happening in the first place.. Not an engineer however - so there's probably a bad design and lubricant choice made?
Also out of curiosity, does the Verus forged clutch fork solve this problem? I was looking at a install vid and I saw that they also replaced the ball - could be an alternative solution, maybe...