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Seal porous float Bowl

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  • Fuel System: Seal porous float Bowl

    What sealant stops Carter AFB float Bowl leak down? Someone recommended Fel-Pro Blu. Any experience with epoxy?

  • #2
    Someone with more knowledge may correct me but, I believe the original factory coatings for carburetors was a zinc chromate.
    Over the years and multiple rebuilds these coatings wear or wash off, increasing the leak down or evaporation through the porous cast body of the carburetor.
    Re-chromating the body should help; and Dave Thibeault does that when he restores a carb.
    "All attempts to 'rise above the issue' are simply an excuse to avoid it profitably." --Dick Gregory

    Brad Johnson, SDC since 1975, ASC since 1990
    Pine Grove Mills, Pa.
    '33 Rockne 10,
    '51 Commander Starlight,
    '53 Commander Starlight "Désirée",
    '56 Sky Hawk


    • #3
      For many years I have successfully sealed the jet wells on Rochester Quadrajet 4 bbl carburetors with a product called: MarineTex. I am sure JB Weld would probably accomplish the same thing.
      Luck, Bill


      • #4
        I would use POR15 tank sealer. It won't come off.


        • #5
          Are you sure the fuel isnt just evaporating, a leaky aluminum float bowl is rare in my experience. pot metal fuel bowls are a different can of worms! Luck Doofus


          • #6
            Just like the gubment to be so worried about air pollution from evaporating gasoline that they required gas to be more volatile. Right, I've never encountered a leaky float bowl that wasn't gasket or crack related.