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post #1 of 4 Old 03-30-2010, 03:46 AM Thread Starter
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1981 CJ7 
Join Date: Mar 2010
Location: ohio
Posts: 1
cj7 clutch

I recently purchased an 81 cj7 that has a for speed in it the clutch was burnt up in it so i replaced it. it origanally had a lever style clutch but i put a diaphram back in it. it doesnt work the part store says it will take either one. everything bolts up fine but when i put it in gear an let out on the clutch you can here the clutch slipping. is there that big of a differance in the 2 styles.

jcross is offline  
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post #2 of 4 Old 03-30-2010, 05:36 AM
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1986 CJ7 
Join Date: Mar 2010
Location: iowa
Posts: 207
Somewere in the 79 to 81 range i think jeep switched clutches...they went from an 11 in to a 10 in i belive....I wouldl think u would need the fly wheel to match the smaller clutch.....

Its a jeep thing...Hell nobody understands!!!!
josh97 is offline  
post #3 of 4 Old 03-30-2010, 06:10 AM
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1981 CJ5 
Join Date: Oct 2009
Location: Arkansas
Posts: 126
Some of the parts stores sell clutches with different sized input shaft splines. If they got you one with the wrong size, you will have all kinds of trouble. I know autozone lists two different "compatible" clutch part #s for mine but only one of them works.

Also, don't lever-type and diaphragm type clutches require slightly different clutch release throws and air gaps? Might want to check on that, I think Novak talks about it some in their knowledge base articles (novak-adapt.com). Might just be an issue of shortening your linkage rod so that the clutch lets out all the way if you're lucky.

Good luck and holler when you get things sorted out, I'll be interested to know what it turned out to be. I've had my share of clutch headaches.
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post #4 of 4 Old 03-30-2010, 06:14 AM
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1986 CJ7 
Join Date: Mar 2010
Location: iowa
Posts: 207
U might be right AR...Im not sure what the differnce would be. I know if u have a v8 u would want the diaphram style. They handle the high rpm's better then the finger clutch...

Its a jeep thing...Hell nobody understands!!!!
josh97 is offline  

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