Valve Springs
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Valve Springs

  1. #1
    Senior Member steele211's Avatar
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    Default Valve Springs

    What percentage of valve spring pressure can you lose before you consider them toast? I'm running a manley nextek 221454.
    290 on the seat and 850 over the nose. Boat sees about 8500 at the stripe. Don't have a problem replacing them just don't want to replace springs that are still considered acceptable.

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  3. #2
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    15% of seat pressure drop and you need to change them.
    Chris Straub
    Straub Technologies

    3HP is an A$$ Whooping!!! JW

  4. #3
    Senior Member PCE680's Avatar
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    Quote Originally Posted by steele211 View Post
    What percentage of valve spring pressure can you lose before you consider them toast? I'm running a manley nextek 221454.
    290 on the seat and 850 over the nose. Boat sees about 8500 at the stripe. Don't have a problem replacing them just don't want to replace springs that are still considered acceptable.
    300 lbs MIN @ 8500 RPMs

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    Senior Member wagspe208's Avatar
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    Lift, and profile kinda matters.
    Wags

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