C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Help with valve lash!

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Old Jan 13, 2003 | 02:38 PM
  #1  
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ROME
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Racer
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From: Shreveport LA
Default Help with valve lash!

I'm adjusting my valves and ran into a situation with one of the exhaust valves. I'm doing my standard 1/2 turn to set, but one of my exhaust valves doesn't want to tighten that far :confused:

What do you do if you can't even get 1/2 turn while setting a valve (i'm getting maybe 1.4 turn)? Is this a sign that something might be wrong, or should I simply tighten it down 1/4 (as ffar as it will go) and go to the next valve?

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Old Jan 13, 2003 | 03:08 PM
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From: Sachse Texas
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Default Re: Help with valve lash! (ROME)

Did you unscrew the set screw out of the rocker nut?
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Old Jan 13, 2003 | 03:57 PM
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Racer
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From: Shreveport LA
Default Re: Help with valve lash! (Vette92)

That was the problem :thumbs:

Can you tell this is the first time I've done this in ten years? :lol:
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Old Jan 13, 2003 | 05:53 PM
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Default Re: Help with valve lash! (ROME)

:cheers:
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Old Jan 13, 2003 | 09:04 PM
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Default Re: Help with valve lash! (ROME)

Interesting that the general consensus is 1/2 turn past zero lash for rocker adjustment. I was doing a bit of perusing in my service manual and it calls for one full turn past zero lash. Hmmmm.....
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Old Jan 13, 2003 | 10:36 PM
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Default Re: Help with valve lash! (cprgmr)

i usually go 1/4 turn past preload for more rpm on a hydylic cam the tighter you make it the lower the rpms will come down :cheers:
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