C! Powerglide Gaskets-Better Than Paper? - NCRS Discussion Boards

C! Powerglide Gaskets-Better Than Paper?

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  • Joe M.
    Extremely Frequent Poster
    • April 30, 1990
    • 1338

    C! Powerglide Gaskets-Better Than Paper?

    I installed new paper gaskets on several of the side covers on my 1960 PG. Have not added ATF yet or started up the car, but the governor side cover is already weeping at the bottom. I knew that I might be wasting my time installing new gaskets because I was warned that I might still end up with leaks; just didn't expect it so quickly.

    I believe the problem is the paper gaskets. The ATF is so thin it is saturating the paper gaskets and then weeping out the bottom.

    Is there any ATF-resistant product I could use to make a gasket that would take the place of the paper gasket?

    Does the replacement product, if any, have to be the same thickness?

    I am thinking something like the sheet vinyl used to line shower pans.

    From what I understand, gasket sealer can not be used because the ATF breaks it down and then degraded particle can plug up the PG.
  • Bruce B.
    Extremely Frequent Poster
    • May 31, 1996
    • 2930

    #2
    Re: C! Powerglide Gaskets-Better Than Paper?

    Joe,

    My 57 cast iron Powerglide was rebuilt using the standard paper gaskets and no leaks after 4000+ miles. These types of paper gaskets has been used for years and should seal as long as the surfaces are clean and flat.

    Comment

    • Joe M.
      Extremely Frequent Poster
      • April 30, 1990
      • 1338

      #3
      Re: C1 Powerglide Gaskets-Better Than Paper?

      Bruce, you are fortunate. I replaced 2 side cover gaskets and so far no moist areas at the bottom of the side covers, but I have not started the car up and driven it. The moist area is at the bottom of the governor cover plate. The governor cover was moist at the bottom within 24 hours of installation of the paper gasket. The two metal surfaces were clean before I installed the paper gasket.

      I am going to try the Permatex transmission gasket maker and see what results I get on the governor cover only.

      Comment

      • Joe M.
        Extremely Frequent Poster
        • April 30, 1990
        • 1338

        #4
        Re: C! Powerglide Gaskets-Better Than Paper?

        If the paper gaskets have worked for you for 4 years, the paper gaskets can create seals; you have proved that. That probably disproves my theory that the thin ATF is saturating the paper gasket and seeping out the bottom of the governor mounting plate. Maybe one of my mounting surfaces, on the tranny or the cover plate is not flat.

        Comment

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