Re: Quick Valve Adjustment Question ?
[Re: Classof70Chally]
#229089
02/18/09 06:37 PM
02/18/09 06:37 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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Quote:
OK, I've got my pushrods and Hughes Billet hold downs  . Now I just need to confirm some clearances. A short time ago a thread was talking about side clearance on the rockers. I now have .025" total between each set of hold downs. Also for hyd roller lifters with a streetcam/motor is .020" to .030" still good? Thanks for a quick reply as I'm trying to get this done today.  
Thats fine
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Re: Quick Valve Adjustment Question ?
[Re: Classof70Chally]
#229091
02/19/09 12:58 AM
02/19/09 12:58 AM
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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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Quote:
Well, I got the hold downs "adjusted"  by way of a belt sander, it took a while but turned out pretty good for my first time doing this. I got the pushrods installed and it looks like I sized them just about perfect. With .025" of preload (which BTW is exactly 1/2 turn on the Comp SS Magnums) I have one (1) thread showing below the rocker arm bottom. The motor should be ready to install the first part of next week and fire up a few days after that!  
Sounds like you have it pretty well set up, I usually
give it a little more pre-load than .025 but if that
works for the lifters then thats fine( I usually go
1/2 to 3/4 turn)
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Re: Quick Valve Adjustment Question ?
[Re: Classof70Chally]
#229093
02/19/09 11:54 AM
02/19/09 11:54 AM
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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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Quote:
Thanks for the input. The lifters didn't list any specs for preload. I can give them another 1/4 turn (3/4 total) which would bring the preload to .035" to .040" . Would this be better, I don't want anymore valve clatter than is necessary. 
Try it where you have it set now.... you shouldnt have
any clatter on a hyd
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Re: Quick Valve Adjustment Question ?
[Re: DRAGSLICK]
#229096
02/19/09 03:42 PM
02/19/09 03:42 PM
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Joined: Feb 2004
Posts: 3,076
Renton, Wa.
Classof70Chally
OP
super gas
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OP
super gas
Joined: Feb 2004
Posts: 3,076
Renton, Wa.
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Quote:
What is the part number on your lifters?
They are Compcams # cc8921-16. They are the retro-fit hydraulic rollers.
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Re: Quick Valve Adjustment Question ?
[Re: Classof70Chally]
#229097
02/19/09 08:35 PM
02/19/09 08:35 PM
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Joined: Oct 2004
Posts: 90
Tallmadge, Ohio
DRAGSLICK
member
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member
Joined: Oct 2004
Posts: 90
Tallmadge, Ohio
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Most pro-magnum lifters I have used call for .002 to .004 lifter preload with the engine warm. If you dont have instructions with your lifters you should call comp-cams and check. If they call for .002 to .004 preload and you have them at .025 to .030 your valves will not close all the way.
Last edited by DRAGSLICK; 02/19/09 08:40 PM.
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Re: Quick Valve Adjustment Question ?
[Re: DRAGSLICK]
#229098
02/19/09 08:44 PM
02/19/09 08:44 PM
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Joined: Oct 2004
Posts: 90
Tallmadge, Ohio
DRAGSLICK
member
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member
Joined: Oct 2004
Posts: 90
Tallmadge, Ohio
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Open my attachment and see if the page from the catalog is big enough to read.
Last edited by DRAGSLICK; 02/19/09 10:42 PM.
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