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Thread: Holley Carb #4160 need fix for leak rear float bowl PLEASE.

  1. #1
    4brltrk Guest

    Question Holley Carb #4160 need fix for leak rear float bowl PLEASE.

    Rebuilt a Holley #4160 carb. and all went well until it filled with gas. The rear float bowl has a leak just above the upper right rear corner where the, #49 Fuel Line Tube, ends, there is a, I will call it, a small flat freeze plug approx. 1/2 in. diameter. How can I reseal this flat steel plug? This plug is in the same position as the #31 Fuel Inlet Fitting on the front float bowl. Thanks for any help. - Rich

  2. #2
    Join Date
    Dec 2009


    If I recall correctly, this is a little core plug installed from the factory, and isn't meant to be removed.
    You can seal it with J-B Weld (not J-B Kwik), by removing carburetor, cleaning and filling the plug with the cold weld.
    When fully cured (24 hours), J-B Weld is completely resistant to water, gasoline and about every other petroleum product or automotive chemical (temperature resistant from -67° to 500° continuous, 600° intermittent - LINK).
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: 385" SBF, Dart SHP 8.2 block, TFS TW 11R 205 heads, 11.8:1 comp, TFS R-Series intake, Dominator MPFI & DIS, 36-1 crank trigger/1x cam sync, 160A 3G alternator, Optima Red battery, A/C, 100HP progressive dry direct-port NOS, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/off-road X-pipe/shorty headers, S&W subframe connectors, LenTech Strip Terminator wide-ratio AOD/2800 RPM converter, M4602G aluminum driveshaft, FRPP 3.31 gears, Cobra Trac-Lok differential, Moser 31 spline axles, '04 Cobra 4-disc brakes, '93 Cobra booster & M/C, 5-lug Bullitt wheels & 245/45R17 tires.

  3. #3
    4brltrk Guest


    Dan - Thanks for the info on the JB Weld. I have used it on many occasions with great success as patching material. I had heard tales that it would seal a gas leak but never put it to the test. This truck will be needed Monday, so will put the JB to the test. Don't want to take the time to order a new cover and wait for it to come in. Will let you know how it turns out. Thanks again. - Rich

    UPDATE: Dan, after reviewing the JB Weld web site, decided to use their WATER WELD epoxy putty to seal the factory installed flat plug on the Holley #4160 carb. Removed the float cover, cleaned around the plug with contact cleaner and put the epoxy on to dry overnight. So far the repair is holding great with NO LEAKS! JB does it again! Thanks again - Rich

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