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Re: Cam Button [Re: fourgearsavoy] #1597069
03/23/14 10:00 PM
03/23/14 10:00 PM
Joined: Jan 2003
Posts: 27,421
Balt. Md
3
383man Offline
Too Many Posts
383man  Offline
Too Many Posts
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Joined: Jan 2003
Posts: 27,421
Balt. Md
I have never used a cam button on any flat tappet engines and cant say I know anyone who has. I have not had any problems or efidence of the cam gear or bolts hitting my cover. Ron

Re: Cam Button [Re: B G Racing] #1597070
03/23/14 11:46 PM
03/23/14 11:46 PM
Joined: Jul 2006
Posts: 4,179
California
mickm Offline
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mickm  Offline
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Joined: Jul 2006
Posts: 4,179
California
Quote:

Get the teflon Comp Cam button for use with stock style chains and gears and stock timing covers.They are easy to cut down and trim for fit.They eliminate the chance of metal against metal issues and the more elaborate multiple piece buttons that can fall apart and cause other issues.




that's the one i used...

Re: Cam Button [Re: mickm] #1597071
03/24/14 08:18 AM
03/24/14 08:18 AM
Joined: Mar 2006
Posts: 9,910
Eighty Four, PA
B G Racing Offline
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B G Racing  Offline
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Joined: Mar 2006
Posts: 9,910
Eighty Four, PA
The long and short of it is a hyduralic cam always have the lifters riding on all the lobes and always have spring pressure applied to all the lobes.This keeps the cam centered.Solid flat tappet and roller tappets have a specific clearence and only some of the lifters contact the cam at given intervals and use higher spring pressures.With the loading and unloading the cam wants to migrate forward with the rotation.This can cause unusual wear on a chain or gear drive as well as distributer/oil pump drives.Cams like small block mopars have a plate to hold the cam and don't require a button,but it a must for BBs.

Re: Cam Button [Re: fourgearsavoy] #1597072
03/24/14 03:07 PM
03/24/14 03:07 PM
Joined: Oct 2005
Posts: 8,873
Ontario, Canada
S
Stanton Online content
Don't question me!
Stanton  Online Content
Don't question me!
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Joined: Oct 2005
Posts: 8,873
Ontario, Canada
Quote:

I can see where the cam bolts were rubbing on the stock timing cover.




The first thing I'd be looking at is the length/thickness of the bolt head as that could be the issue. I've had allen head capscrews that hit the cover on install and had to use bolts with a thinner head. Just a thought before you assume the cam is walking.

Re: Cam Button [Re: Stanton] #1597073
03/24/14 04:18 PM
03/24/14 04:18 PM
Joined: Mar 2006
Posts: 9,910
Eighty Four, PA
B G Racing Offline
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B G Racing  Offline
master

Joined: Mar 2006
Posts: 9,910
Eighty Four, PA
Quote:

Quote:

I can see where the cam bolts were rubbing on the stock timing cover.




The first thing I'd be looking at is the length/thickness of the bolt head as that could be the issue. I've had allen head capscrews that hit the cover on install and had to use bolts with a thinner head. Just a thought before you assume the cam is walking.





We recommend always checking the cam bolts for clearence at the cover even if you use a button.We almost always find most need the heads trimmed down.

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