Re: Hydraulic Roller Cam Button question
[Re: batt2rm]
#2001157
01/29/16 02:08 PM
01/29/16 02:08 PM
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Joined: Jan 2003
Posts: 31,074 Oregon
AndyF
I Win
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I Win
Joined: Jan 2003
Posts: 31,074
Oregon
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You need to set the end play so it is in spec.
Last edited by AndyF; 01/29/16 02:08 PM.
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Re: Hydraulic Roller Cam Button question
[Re: batt2rm]
#2001331
01/29/16 05:52 PM
01/29/16 05:52 PM
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Joined: Jan 2003
Posts: 25,967 Rio Linda, CA
John_Kunkel
Too Many Posts
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Too Many Posts
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Posts: 25,967
Rio Linda, CA
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If you have a water pump housing in front of the timing cover, locate the spot on the outside of the timing cover where the button contacts, then mix up a blob of epoxy and sandwich it between the pump housing and the timing cover with some wax paper to allow future separation. The pump housing will reinforce the tin timing cover.
The INTERNET, the MISinformation superhighway
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Re: Hydraulic Roller Cam Button question
[Re: batt2rm]
#2001404
01/29/16 07:35 PM
01/29/16 07:35 PM
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Joined: Oct 2005
Posts: 8,908 Ontario, Canada
Stanton
Don't question me!
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Don't question me!
Joined: Oct 2005
Posts: 8,908
Ontario, Canada
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The cam button is make of Aluminum. GARBAGE. Throw it away NOW !!! The aluminum will wear where it contacts the cover and you`ll end up with filings in the motor. You want a nylon button or a roller button. In order to get the necessary clearance you may have to shim the back of the button (use pieces of feeler gauge in the hole before you insert the button. But most likely the button will need to be trimmed to fit. With a nylon button you can file it, grind it of whatever to take material off. But once done you have nothing to worry about as far as wear, filings, etc.. A roller button can be a bit more hassle. They can be shimmed out if need be but they cannot be shortened to fit. You want a few thou end play with a solid button. A roller button can live with zero end play BUT you absolutely do NOT want any preload. In other words, if the timing cover bows out when you install it over the button - its too tight!! I used a roller button on my motor. To get the proper (zero) clearance I had to use a thicker (Superformance) cover gasket and then shim behind the button. To make sure the cover doesn't deflect, install the cover, put a blob of plasticene on the cover roughly where the cam is and install the waterpump with gaskets. Take the pump of and measure the thickness of the squished plasticene. This is the "approximate" thickness of the plate you need to weld or epoxy to either the pump or the cover.
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Re: Hydraulic Roller Cam Button question
[Re: Hot 340]
#2001574
01/29/16 11:40 PM
01/29/16 11:40 PM
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Joined: Aug 2003
Posts: 43,292 Bend,OR USA
Cab_Burge
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I Win
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Bend,OR USA
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The last, and only time, I did something like that to limit cam movement without a torrington bearing with wear washers the cam gear wore into the block a bunch :tsk :That was on my First 426 hemi motor so I stop bending the timing cover to limit the cam travel after that one
Last edited by Cab_Burge; 01/29/16 11:40 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Hydraulic Roller Cam Button question
[Re: Stanton]
#2001835
01/30/16 12:50 PM
01/30/16 12:50 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Whats the end play suppose to be normally... about .015?.. thats what I set on my SB stuff.. I change the thickness of the washer that I use to replace the pump eccentric
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Re: Hydraulic Roller Cam Button question
[Re: MR_P_BODY]
#2001902
01/30/16 02:17 PM
01/30/16 02:17 PM
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Joined: Jul 2004
Posts: 19,318 State of confusion
Thumperdart
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I Live Here
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State of confusion
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Been runnin the Isky rollerized button for about 9 years w/it touching the stock timing cover and slightly preloaded........Isn`t that the point of having rollers?
72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
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Re: Hydraulic Roller Cam Button question
[Re: Thumperdart]
#2001905
01/30/16 02:23 PM
01/30/16 02:23 PM
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Joined: Nov 2004
Posts: 7,274 s.w.fl
bonefish
master
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master
Joined: Nov 2004
Posts: 7,274
s.w.fl
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Been runnin the Isky rollerized button for about 9 years w/it touching the stock timing cover and slightly preloaded........Isn`t that the point of having rollers? same here,never a prob.
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Re: Hydraulic Roller Cam Button question
[Re: bonefish]
#2001929
01/30/16 02:59 PM
01/30/16 02:59 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Been runnin the Isky rollerized button for about 9 years w/it touching the stock timing cover and slightly preloaded........Isn`t that the point of having rollers? same here,never a prob. Your talking two different worlds here boys.. a alum button VS a rollerized version.. no way would I run a load on a alum version.. a bit of clearance doesnt hurt anything.. even if it is rollerized
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Re: Hydraulic Roller Cam Button question
[Re: MR_P_BODY]
#2001944
01/30/16 03:24 PM
01/30/16 03:24 PM
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Joined: Jul 2004
Posts: 19,318 State of confusion
Thumperdart
I Live Here
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I Live Here
Joined: Jul 2004
Posts: 19,318
State of confusion
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Been runnin the Isky rollerized button for about 9 years w/it touching the stock timing cover and slightly preloaded........Isn`t that the point of having rollers? same here,never a prob. Your talking two different worlds here boys.. a alum button VS a rollerized version.. no way would I run a load on a alum version.. a bit of clearance doesnt hurt anything.. even if it is rollerized I never said alum. I said "rollerized" cos why would one have a soft material like alum. rubbing/disintegrating into the motor..........
72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
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Re: Hydraulic Roller Cam Button question
[Re: batt2rm]
#2002019
01/30/16 04:43 PM
01/30/16 04:43 PM
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Joined: Oct 2005
Posts: 8,908 Ontario, Canada
Stanton
Don't question me!
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Don't question me!
Joined: Oct 2005
Posts: 8,908
Ontario, Canada
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Been runnin the Isky rollerized button for about 9 years w/it touching the stock timing cover and slightly preloaded........Isn`t that the point of having rollers? I'm the guy that said "no preload". However, I thought I was pretty clear that I was referring to a solid button. I guess not! Personally, I run preload on my roller button. But very little since the cover is cast and has no play in it. But the timing sprocket also has a torrington bearing.
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