noisy hyd roller lifters - Page 2 - Hot Rod Forum : Hotrodders Bulletin Board
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  #16 (permalink)  
Old 05-12-2008, 12:32 PM
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Cool...one more time...I will do that tonight...I just hope that its just valve train noise and not a bearing going out...

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Old 05-12-2008, 12:46 PM
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Mine were somewhat noisy in my SBC too ... ( GM " Hot cam " )
Factory GM hydraulic rollers with factory 1.6 roller rockers ... I have a cut out valve cover that I install. After the engine is warmed up to normal operating temperature ... I install the cut valve cover and then adjust the valve with the engine running. Back one off until it clicks noticeably and then tighten until the noise decreases. Then 1/2 a turn more ... lock down the adjuster and go to the next one After doing all 16 ... mine is noticeably quieter ...

Worked for me
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Old 05-12-2008, 01:57 PM
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also, when you have the covers off tonight, look them over inside real good. Big roller rockers can rub if the VC is off just a tad. If you see any shiny marks on the inside of the covers, you may have found the noise.

Mark
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Old 05-13-2008, 12:24 PM
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got home after work and readjusted lifters..
set to TDC and adjusted and followed the procedure below
http://www.thedirtforum.com/chevyvalves.htm

I did a 3/4 turn and locked them down.
When the procedure was complete it helped a little But I think they are still
very noisy more than I would like..
Are there after market roller lifters made that are quite.?
The ones I have are GM OEM roller lifters....
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Old 05-13-2008, 12:30 PM
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Why NOT adjust with the engine running??

You are relying on marks, mirrors and smoke the way you are doing it IMHO ...

Cut yourself a valve cover and do it right ...

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Old 05-13-2008, 12:41 PM
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working on gettin an old valve cover now...
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Old 05-13-2008, 03:08 PM
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I used to adjust them with the engine running. Not any more. It's just too messy for me. Plus, if you have full roller rockers, you won't be able to put a stock cover over them, unless you cut off the whole top. I have a stock SBC cover with the top cut out and it still hits. If I cut any more, i'll have oil spraying everywhere. I've had zero problems adjusting them the "new way"! LOL

Here is the link from above, I could not get it to work as posted.

http://www.thedirtforum.com/chevyvalves.htm

Mark
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Old 05-13-2008, 03:17 PM
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I never adjust them with the motor running and often times I set our race motors up with a dial indicator. These have special hydraulic lifters and need to be set at .002-.004 preload.
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