Thread: Adjusting SBC Valves
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06-22-2005 11:44 AM #1
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06-22-2005 01:16 PM #2
I think we need more info -
What service did you perform if any?
Was oil circulating before?
Did you change the rockers?
Replace lifters?
Are the pushrod tubes clear?
If they are - squirt carburator cleaner down the tube in hopes of clearing a varnished /stuck lifter otherwise clean or install new lifters.
Bert
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06-22-2005 01:32 PM #3
It was a complete engine rebuild. New piston rings, all bearings, new cam and lifters, new rockers, push rods were cleaned. I had a oil problem because of cam bearings so it came back out and got new cam main and rod bearings again.Chevys for life
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06-22-2005 01:43 PM #4
i use rocker arm clips there are 16 one clip per rocker they
cover the hole that the oil squirts out or use old valve
covers with holes. back off rocker arm nut till it clatters
then tighten till it stops then go 1/2 turn no more
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06-22-2005 01:51 PM #5
hey dotgone nice ride!
I went by the book and re tightened them. I had started to do what you said but the first rocker I did was so loose I couldn't hear it chatter. This is the first time I've adjusted roller tip rockers. Sounds different. I'll give it another go. I like the clips thing. I guess I can get these at my local Oreilly? Thanks for the tip!Chevys for life
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06-22-2005 01:57 PM #6
just wanted to let you know,the clips work good if your fast
because the oil will eventually run down the side of the head
and on the headers and floor. the old valve covers work best
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06-23-2005 03:26 PM #7
Clips help, but a cut up old valve cover works better. Using the clips and a cover works really well. I picked up a set of clips at O'reily.
Be careful and keep your engine speeds low. I hit the gas a bit too much the first time I used the clips and they went flying all over the garage.
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06-23-2005 04:01 PM #8
Why are you adjusting the valves with it runing? Much easier and MUCH less messy to do it on a "still" engine. If you don't have the correct procedure let me know.
EdEd in Jeffersonville, IN
Street Rod Builder / Enthusiast
Journeyman Machinist / Welder / (Ret)
Viet Nam Vet (U.S. Army) USAF (Ret)
Disabled American Veteran
Patriot Guard Rider
Moderator Mortec Forum
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06-23-2005 04:55 PM #9
I did adjust them by the book, 3 times. but I still have a tapping. I now think I got a few bad lifters. And they were new.Chevys for life
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06-23-2005 06:25 PM #10
Did the cam bearings take care of the oil pressure?
EdEd in Jeffersonville, IN
Street Rod Builder / Enthusiast
Journeyman Machinist / Welder / (Ret)
Viet Nam Vet (U.S. Army) USAF (Ret)
Disabled American Veteran
Patriot Guard Rider
Moderator Mortec Forum
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06-23-2005 08:16 PM #11
Yes they did. I have steady pressure. Still lower than I expected. 45psi. I'm putting new lifters in, in the morning. These are new, but no good. I also have a thread going about a crazy computer problem.Chevys for life
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06-23-2005 11:42 PM #12
I doubt that your lifters are bad.
EdEd in Jeffersonville, IN
Street Rod Builder / Enthusiast
Journeyman Machinist / Welder / (Ret)
Viet Nam Vet (U.S. Army) USAF (Ret)
Disabled American Veteran
Patriot Guard Rider
Moderator Mortec Forum
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06-24-2005 07:51 AM #13
Do you think they are just not pressured up yet?Chevys for life
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06-24-2005 09:51 AM #14
Did that for a little bit. It sounds a little better, still has a little ticking. I'll mess with these more after I get the computer problem fixed.
ThanksChevys for life
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06-24-2005 10:07 AM #15
Where did you get the procedure for adjusting the valves? The valves can be adjusted hot or cold with the engine not running and by cranking the engine two complete revolutions, while adjusting specific valves at TDC. If you have not done that let me know and I will get the procedure to you. You can guess at it all day long and still have a ticking.
EdEd in Jeffersonville, IN
Street Rod Builder / Enthusiast
Journeyman Machinist / Welder / (Ret)
Viet Nam Vet (U.S. Army) USAF (Ret)
Disabled American Veteran
Patriot Guard Rider
Moderator Mortec Forum
Thank you Roger. .
Another little bird