3rd gen Firebird, clutch disengagement problem - Hot Rod Forum : Hotrodders Bulletin Board
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Old 08-04-2002, 04:03 PM
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Unhappy 3rd gen Firebird, clutch disengagement problem

I have a 91 TransAm - it has a fairly recent new Centerforce clutch assy. (1yr. old) Since buying the car... The clutch doesn't COMPLETELY disengage, all of the time. (sometimes better / sometimes worse) It has a hydraulic clutch - as those will likely be able to help me would know.

I SUSPECT my problem comes from a FACTORY boo-boo in the amount of slave cylinder travel...and the Centerforce clutch's parts need just a TAD more 'throw' that stock stuff. There are no adjustments to help. There is a small piece of plastic inside the cupped hole, on the end of the clutch-fork...where the slave cylinder rod pushes on the fork. ( a Factory "fix", to address the problem???) I can't get help from local dealers, they don't list this little plastic bit. I think it's mashed / worn. I think - maybe - if I can find a new one of these little clutchfork 'shim'cups - it will solve the problem ??? Anybody else out there had this annoying thing to deal with? The Clutch master and slave are not leaking. All is fine, until I go to put the car into 1st / reverse when at a stop. Gears refuse to engage - or 'grind' when they do. Help?

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Old 08-04-2002, 05:17 PM
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A custom machined pushrod that is adjustable might be a wise investment, just make sure to heat treat the ends. At any rate a partial disassembly to check with a feeler gauge how much clearance there is under the clutch plate when the pedal is depressed might be in order, 0.010" is what I consider a minimum with 0.025" a better clearance dimension for everyday use.

[ August 04, 2002: Message edited by: 4 Jaw Chuck ]</p>
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Old 08-04-2002, 08:12 PM
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Thanks Mr.LatheGuy... ( your 'handle' explains your ingenious solution)

That may be the way I will eventually have to solve this...I could buy a stock one ( if they have THAT, in the Gm parts catalog)...and get some guy who's good with 4 jaws, to make me an adjustable one out of it. I might even be able to do this with a vise / hacksaw and a thread-die...on my lunch hour. ( a threaded turnbuckle nut in the middle - with locknuts, comes to mind) That way I can keep driving the car until the custom part is ready.
Heck if this works good, maybe I'll sell a few of'em here. I don't plan to keep this car.... I hope to get a vehicle with a Pentastar on the right front fender, someday.

Thanks again! - Tom
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