Quote:
Originally Posted by scott70
I wanted a replacement clutch fork for my 70 to but the 69.00 one you have is not in stock at the moment so I bought a good mark one. When I received it I noticed the part that goes against the throw out bearing was flat compared to my original that was curved. If you think about it you would want it curved so the bearing can rock on the curved part when the fork goes through its arch as you push on the clutch peddle. If it sits on flat metal it has to tip one way or the other. So I looked at the pic of your 69.00 dollar fork and it looks like it’s flat also. Actually any brand of aftermarket fork claiming to be Pontiac specific looked flat in the pics online. But pics of oem forks are all curved. Am I missing something here?
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The curve vs. straight is not important. What is important is the angle of the fork and the overall length. First, the curve vs. straight. The first picture is an OEM Pontiac fork that I purchased new back in the 80’s. You’ll notice that the ends are straight. Please, no comments on the yellow color. The next is used OEM for a mid-60’s GTO. Also has straight edges. The one thing I noticed is that the straight portions on the aftermarket are a lot longer than the OEM but maybe that’s just the angle in the picture.
The angle of the fork is part of the clutch geometry that allows the throwout bearing to move in a straight line on the input shaft housing. Compare the two forks and see if everything matches up. If so you should be good to go. It appears that the bent up portion was initially done to keep that spring steel piece against the bearing and later determined to be no longer needed? The “unbent” portion still appears to be against the front part of the bearing to hold in place. The bearing will “rock” about 1/8” in the OEM fork.