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  1. #1

    Default 454 crusader heat exchangers

    Ive put 2 new 16lb vented stant rad caps on my heat exchangers and cant stop the leakage. should I try a higher poundage or a non vented cap or?

  2. #2
    Join Date
    Dec 2006
    Location
    Chaumont Bay, N.y., USA
    Posts
    5,196

    Default Re: 454 crusader heat exchangers

    Ayuh,.... Why did ya replace the old caps, 'n what were they rated at,..??

    Where, Exactly, 'n when are they leakin',..??
    Any Grease is Better,... Than No grease at All....

  3. #3

    Default Re: 454 crusader heat exchangers

    Quote Originally Posted by bondo View Post
    Ayuh,.... Why did ya replace the old caps, 'n what were they rated at,..??

    Where, Exactly, 'n when are they leakin',..??
    They are leaking around the cap when the engines have pressurized and are warm. the original caps were lost by the mechanic when I had them hot tanked?

  4. #4
    Join Date
    Sep 2008
    Location
    Maryland - USA
    Posts
    6,807

    Default Re: 454 crusader heat exchangers

    if they are the older "Model 350" types, those caps are rated 7PSI....if you have new 16 PSI caps and they are both leaking, I'd be inclined to check the HX surfaces....especially the inner (lower) sealing surface....

  5. #5

    Default Re: 454 crusader heat exchangers

    Thanks makomark, I believe your right about the 7lbers, I just picked up 2 and will try them in the morning

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