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Cam endplay math?
#1076051
09/16/11 07:22 PM
09/16/11 07:22 PM
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Joined: Jan 2011
Posts: 4,785 Utah and Alaska
astjp2
OP
master
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OP
master
Joined: Jan 2011
Posts: 4,785
Utah and Alaska
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Ok, I made a brass cam button and now I need to see if my numbers and assumptions are ok. Superformance gasket thickness .051 total gap between cover and camshaft using clay with no gasket and bolts tight .648 cam button length .684
assumption 1: Roller cam end play .005-.010 assumption 2: Gasket crush .005-.010
So I get for math gasket .051 minus crush -.005 plus gap +.648 equals =.694 minus button -.684 equals gap =.010
If I crush .010 on the gasket, my endplay would then be .005
Is my math ok? Are my tolerances ok? Did I miss anything?
1941 Taylorcraft 1968 Charger 1994 Wrangler 1998 Wrangler 2008 Kia Rio 2017 Jetta
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Re: Cam endplay math?
[Re: astjp2]
#1076059
09/17/11 08:44 PM
09/17/11 08:44 PM
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Joined: Jan 2003
Posts: 16,930 NC
440Jim
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 16,930
NC
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Quote:
there is a .045 4130 chromoly plate welded inside the stock cover which is shaped like the original V recess.
I did that for a friend of mine back in 2004 when he built his roller cam, Indy headed, big block. It works fine, but any off the self button needs more taken off when it is welded to the inside. But it looks nicer that way after the motor is put together. We used a dial indicator on the cam during assembly to set the end play. I forget the number, but it was pretty tight since the cover will still flex some.
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