Holleys 4160 fuel bowl leaking - NCRS Discussion Boards

Holleys 4160 fuel bowl leaking

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  • Keith B.
    Extremely Frequent Poster
    • September 15, 2014
    • 1583

    Holleys 4160 fuel bowl leaking

    On a Holley 4160 fuel bowl on the side where the fuel transfer tube goes from the front to back there is a metal push in plug. its leaking gas. what is the best method to fix it.
  • Stephen L.
    Extremely Frequent Poster
    • May 31, 1984
    • 3157

    #2
    Re: Holleys 4160 fuel bowl leaking

    I placed a small amount of epoxy on the plug edge groove where it is leaking. It stopped the leak. I recently had my car judged at the Greenville Regional and lost a point; no big deal......if you are worried about that.

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    • Keith B.
      Extremely Frequent Poster
      • September 15, 2014
      • 1583

      #3
      Re: Holleys 4160 fuel bowl leaking

      The guy who restored/ rebuilt my carb used epoxy on this area and it worked well for the last eight years. But it started to leak and the epoxy came off. I got the area clean, dried and put some J B Weld epoxy on it. I really hope I don’t have to remove the bowl and create other areas to possible leak.

      Comment

      • Keith B.
        Extremely Frequent Poster
        • September 15, 2014
        • 1583

        #4
        Re: Holleys 4160 fuel bowl leaking

        I still have a slight leak even after new epoxy. is there a way to replace the welsh plug with something better that wont leak? is there enough material to have it drilled and taped for a NPT plug?

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        • Joe L.
          Beyond Control Poster
          • February 1, 1988
          • 43221

          #5
          Re: Holleys 4160 fuel bowl leaking

          Originally posted by Keith Brodbeck (60464)
          I still have a slight leak even after new epoxy. is there a way to replace the welsh plug with something better that wont leak? is there enough material to have it drilled and taped for a NPT plug?
          Keith------


          Some Holley 4160 carbs having the same basic fuel bowl casting use a brass fitting fuel inlet which is tapped into the boss to which you are referring. So, it is possible to drill and tap as you suggest. However, I do not know the thread size or if there is an NPT thread size that will work. However, there is certainly some thread size that will work.
          In Appreciation of John Hinckley

          Comment

          • Keith B.
            Extremely Frequent Poster
            • September 15, 2014
            • 1583

            #6
            Re: Holleys 4160 fuel bowl leaking

            Joe. Thanks he machine shop I work at should be able to drill and tap any thread I want but before I took the bowl off I wanted to make sure it’s all possible. This is for my 66 SS396 Chevelle.

            Comment

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