Belgian1979vette

I'm having fits with the clutch free play on my car.

Originally the clutch fork was not the original on my car. It was a type where you could adjust the length of the link between the clutch fork and the axle. The clutch fork had a sort of round dish in it where the point of that adjustable link sat in. Everything was kept together with a spring. Must say that it worked rather well.

When doing the restoration on my car, I changed back to an original type cluch fork and the fixed link. Clutch remained the same. Flywheel was replace with a steel SFI one and the cluch housing to a blowproof one.

I verified the height of the ball in the clutch housing and that was the same as in my original bellhousing.

I set the freeplay on the bolts of the pedal lever like stated in the manual, but I feel like the cluch only releases and the very end of the travel, which is annoying and making the car difficult to shift.

Could it be that the link is too short ?

pauldana

you need a longer pivot ball, or an adjustable ball. Your steel billet flywheel is about 1/4" thinner, which throws everything off.... been there, done that

Surfer69

What he said...... been there too

Belgian1979vette

f*ck.

Anyway I find it somewhat odd, since the clutch is actually touching the pressure plate.

I think the ball in there is adjustable. So I need to adjust it out ?

Garys 68

May need and adjustable pivot ball and/or different throwout bearing.
A good article on clutch fork geometry:
http://www.novak-adapt.com/knowledge/clutches_etc.htm

pauldana

stock pivot ball is not adjustable... yea, it looks like it may be, but its not:-(

Belgian1979vette

How deep does the pivot ball need to be set from the face of the flywheel ?

I have a block saver plate on it and a Mcleod steel sfi flywheel.

Clutch is a centerforce I.

pauldana

you need the extended clutch pivot ball or an adjustable ball from McCloud

I personally do not like the Centerforce clutch, I believe it adds vibration, and does not release 100% during high revs.

DUB

The paperwork on how to set the clutch pivot ball should have been included with your clutch.

Taking into consideration the block saver plate...from the surface of the block saver plate where it would contact the engine block to the top of the pivot ball should be 4.75".

Also...with you using explosion-proof bell housing...have you checked your "bore concentricity"????...and parallelism also???? These should be checked and corrected if NOT within specs...and are in the paperwork from Centerforce.

Also...make sure that you have no free play ion any of your linkage ends. The ONLY place that there should be free-play...so-to-speak is the end of the rod that attaches to your clutch fork with the clevis pin. the end of that rod will be slightly slotted...and you should have the anti-rattle springs also.

DUB

Belgian1979vette

To add to this : Hays said the flywheel is .940. GM has a spec of .960. Seems well withing limits. the difference should then be caused by the blocksaver plate.

Yes the centerforce adds vibration.

resdoggie

Mine doesn't. Maybe some folks didn't do a proper install.