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  1. #1
    Join Date
    May 2007
    Posts
    240

    Default Odd question... Radiator Cap

    What radiator cap should I run with my 604 crate late model?
    20-22lbs. Or
    23-25lbs. Or
    29-31lbs. Or
    31-33lbs. ???

    Any/all input welcome, thanks, KB

  2. #2
    Join Date
    May 2007
    Location
    Batavia, OH
    Posts
    13,676

    Default

    As much cap as the rest of your system can handle as far as pressure goes. It should be the weak link in the system.
    Modern Day Wedge Racing
    Florence -2
    Atomic - 2

  3. #3
    Join Date
    May 2007
    Location
    Kansas
    Posts
    1,943

    Default

    Quote Originally Posted by MasterSbilt_Racer View Post
    As much cap as the rest of your system can handle as far as pressure goes. It should be the weak link in the system.
    Agreed. On a side note, with higher pressures make sure your hose connections have a good bulge or ridge on the component or you can blow a hose off.

  4. #4
    Join Date
    May 2007
    Posts
    240

    Default

    Thanks guys

  5. #5
    Join Date
    Oct 2017
    Posts
    1,371

    Default

    Quote Originally Posted by Underdog View Post
    Thanks guys
    Every psi raises the boiling point roughly 3f so the higher the cap the hotter you can run before melting it down

  6. #6
    Join Date
    Sep 2021
    Posts
    16

    Default

    Keyser sells a 38-42 we have been running them for a few years.

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