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  • 430 surge tank

    Hello,

    I'm finally putting my 430 back together after years. Runs great but I can't seem to get the surge tank to seal at the thermostat housing. 3 tries with various sealers. Most recently I filled the pits on the surge tank flange with JB Weld and sanded the surface flat. Then used "The Right Stuff" which I have used everywhere else with good success - new FelPro gasket. Now leaking worse than ever, even with no pressure.

    I can buy a (new?) surge tank from TBirdHQ for $200, but it may have the same problem.

    Should be simple, but I'm at my wits end with this - any ideas?

    Thanks,

    John
    John Orwin
    1960 HT 430
    VTCI #11290
    Tbird Registry #1590

  • #2
    My suggestion is to put a straight edge across both the tank and intake flanges. Obviously one or the other is not flat.

    John
    John Pizzi - Squarebirds Administrator

    Thunderbird Registry #36223
    jopizz@verizon.net 856-779-9695

    http://www.squarebirds.org/picture_gallery/TechnicalResourceLibrary/trl.htm

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    • #3
      I have done this, using a small machinist square (very carefully), under magnification. Looked 100% ok.
      John Orwin
      1960 HT 430
      VTCI #11290
      Tbird Registry #1590

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      • #4
        Make sure your flange doesn't have a crack. It happened to me on my Y-Block. The housing neck was cast iron and I couldn't find the leak for the longest time. Tried a different one and it's been great ever since.

        I realize your flange is permanently attached but check it out. - Dave
        My latest project:
        CLICK HERE to see my custom hydraulic roller 390 FE build.

        "We've got to pause and ask ourselves: How much clean air do we need?"
        --Lee Iacocca

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        • #5
          Surge tank - success

          Hi all, that flange wasn't flat enough. I bought a small Ryobi belt/disk sander and brought it down to perfectly flat with no pitting. Sealed up fine with Permatex blue sealer!

          Thanks,

          John
          John Orwin
          1960 HT 430
          VTCI #11290
          Tbird Registry #1590

          Comment

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