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formula31

03-19-2002 04:35 PM

Is there any good reason to use a cam button on a roller chain setup?

BBC, Cloyes true roller. Hydraulic flat tappet cam and lifters. I have a bearing behind the sprocket to protect the block, but do I really need the button in the front?

US1 Fountain

03-19-2002 04:46 PM

I believe with a flat tappit cam, the cam is always forced backwards into the block. Thus only needing a bearing/bushing behind the cam gear. So no cam button needed. With a roller cam, there are no forward or rearward forces applied to the cam. With it being free floating, that is why they need to be held in location, wither it be a cam button or a retaining plate(terminology?)

Vinny P

03-19-2002 08:03 PM

I agree with US1FOUNTAIN

traviss

03-19-2002 08:07 PM

I too agree with what US1Fountain said..

US1 Fountain

03-19-2002 09:09 PM

Thank Ya, Thank ya very much! :D :D

Crazyhorse

03-19-2002 10:23 PM

Elvis has left the building.

formula31

03-19-2002 10:33 PM

THanks all, I was pretty sure the load from the dist/oil pump gear always kept the cam against the block but I wasnt sure what happened on deceleration. Ive put them on engines before and never really thought about whether they did anything or not. At least not on a chain drive. Thanks again.

Tom

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