What he said...... been there too
Clutch question
Thread Starter
Melting Slicks
Joined: Mar 2002
Posts: 2,164
Likes: 7
From: Beringen
Clutch question
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 ?
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 ?
Thread Starter
Melting Slicks
Joined: Mar 2002
Posts: 2,164
Likes: 7
From: Beringen
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 ?
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 ?
Last edited by Belgian1979vette; Apr 1, 2014 at 05:51 AM.
Melting Slicks
Joined: Sep 2004
Posts: 2,655
Likes: 19
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
A good article on clutch fork geometry:
http://www.novak-adapt.com/knowledge/clutches_etc.htm
Race Director
Joined: May 2003
Posts: 10,956
Likes: 409
From: California
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.
I personally do not like the Centerforce clutch, I believe it adds vibration, and does not release 100% during high revs.
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Race Director
Joined: Apr 2009
Posts: 19,294
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From: Charlotte NC
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
Thread Starter
Melting Slicks
Joined: Mar 2002
Posts: 2,164
Likes: 7
From: Beringen
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.
Yes the centerforce adds vibration.
Had a 1976 L-82, 4-sp
Joined: Mar 2011
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