Valve Lash Hot VS Cold
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Valve Lash Hot VS Cold

  1. #1
    LP-25.com Infomaniac's Avatar
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    Default Valve Lash Hot VS Cold

    Anyone have any observations of lash cold when it's always been set hot?

    Aluminum block aluminum head.
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    On mine , all aluminum 582......20 hot is 10 cold.
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    LP-25.com Infomaniac's Avatar
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    I've been reading around. some say adjust them cold and check them hot. it's pretty much the same temp when cold but never the same temp hot.

    Getting to them and adjusting them before it can cool down is tough..

    Figure out the cold lash and there you go is what I've been reading.

    One of ours is .012 hot and it's zero or less cold.
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    Senior Member cyclone's Avatar
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    Mine is tough to get to all of them while they are still hot. I set the lash cold. Have checked it lots of times when hot.

    Al block and heads on mine =.004/.014 cold and .020/.030 hot.
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    steelcomp was here
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    X3 on the above...about .010 difference on all alum deals, about .006 iron block, alum. heads.
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    Resident Ford Nut Sleeper CP's Avatar
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    Quote Originally Posted by Infomaniac View Post

    Figure out the cold lash and there you go is what I've been reading.


    One of ours is .012 hot and it's zero or less cold.
    setting it hot once every 5 yrs or so is good enough for me.

    I set it cold at .024 ( alumi head/steel block) and just leave it as it grows .005-.006 hot

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    I set them at .015 cold and they are at .024 hot within +- .002
    Last time I set the valve lash was last spring.
    Still don't have a stud girdle but the cam is not requiring much out of the valve train at .630 gross lift.

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    Set mine @ .018 cold, cam calls for .028-.030 hot. Aluminum block/heads.
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    I'm confused by the question and some of the answers. I thought all you turbo geeks needed to use were Mellings stock replacement cams for GMC dump trucks to match the peanut port heads,



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  12. #10
    Led
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    Checking lash around hot headers is a pain, thinking about those hot headers and hair dryers...ouch!
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