Rubber plugs on '63-'64 drum brakes - NCRS Discussion Boards

Rubber plugs on '63-'64 drum brakes

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  • Stuart F.
    Expired
    • August 31, 1996
    • 4676

    #16
    Re: Rubber plugs on '63-'64 drum brakes

    Whew! Jim. For a minute there I thought you had one drum with four knockouts and I thought, wow! where did mine go wrong.

    Just a caution here that I am repeating; be wary of replacement drums that do not have the knockouts, that are generic and don't have the grooves for the anti-chatter springs. I bought some from Eckler's when I did my complete brake overhaul last year (changing from Sintered Metallics to Matrix Ceramics). I was convinced (by my friends) that after 40k miles with Metallics my originals would be junk (not so). At any rate, I could not get the new brakes adjusted right with these replacement drums. I believe there is a dimensional relationship difference between the hub mounting surface and the inner braking surface, i.e. the linings would not seat in the drums, and the drum itself does not seem to fit up to the backing plate properly (close, but no cigar). I finally had to have my originals trued up (they had a minimal amount of taper and out of round, well within limits) and they work great.

    Stu Fox

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    • Harry S.
      Extremely Frequent Poster
      • July 31, 2002
      • 5301

      #17
      Re: Rubber plugs on '63-'64 drum brakes

      New, in a box dated 12/63.
      Attached Files


      Comment

      • Wayne M.
        Expired
        • March 1, 1980
        • 6414

        #18
        Re: Rubber plugs on '63-'64 drum brakes

        Originally posted by Michael Hanson (4067)
        ...What are your casting numbers?
        Michael -- on my (probably) late Jan '64 rear suspension (no car), My drum edge casting #s are W8 (on one); W12 (the other); both with number 3828688 (ie. 3 less than Harry's). Any reason for the number difference ? ie. regular versus J65 ?

        Comment

        • Michael H.
          Expired
          • January 29, 2008
          • 7477

          #19
          Re: Rubber plugs on '63-'64 drum brakes

          Originally posted by Wayne Midkiff (3437)
          Michael -- on my (probably) late Jan '64 rear suspension (no car), My drum edge casting #s are W8 (on one); W12 (the other); both with number 3828688 (ie. 3 less than Harry's). Any reason for the number difference ? ie. regular versus J65 ?
          Harry's drum looks like a front, not a rear??

          Comment

          • Jim W.
            Very Frequent User
            • April 1, 2006
            • 228

            #20
            Re: Rubber plugs on '63-'64 drum brakes

            Originally posted by Michael Hanson (4067)
            Yup, that's a correct un-knocked out knockout.

            What are your casting numbers?
            Michael
            I don't have all the #'s from when I took these pics a few years ago, but I do see a W3 and W9 along with #3828688 and 3828671. Mine are metallic.

            Stu- Thanks for the heads up. Mine have appx. 43000 miles and look like plenty of life left, so when I get around to restoring I will try to use linings and drums as is to test first.
            Attached Files

            Comment

            • Michael H.
              Expired
              • January 29, 2008
              • 7477

              #21
              Re: Rubber plugs on '63-'64 drum brakes

              Originally posted by Jim Wampler (45572)
              Michael
              I don't have all the #'s from when I took these pics a few years ago, but I do see a W3 and W9 along with #3828688 and 3828671. Mine are metallic.

              Stu- Thanks for the heads up. Mine have appx. 43000 miles and look like plenty of life left, so when I get around to restoring I will try to use linings and drums as is to test first.
              Thanks Jim.

              Comment

              • Alan D.
                Extremely Frequent Poster
                • January 1, 2005
                • 2038

                #22
                Re: Rubber plugs on '63-'64 drum brakes

                The original J65 drums have a single knock out while the SR (at least rear) have two knock outs, never noticed that before until this thread. Thanks

                Comment

                • Wayne M.
                  Expired
                  • March 1, 1980
                  • 6414

                  #23
                  Re: Rubber plugs on '63-'64 drum brakes

                  Originally posted by Alan Drake (43261)
                  The original J65 drums have a single knock out while the SR (at least rear) have two knock outs, never noticed that before until this thread. Thanks
                  Alan -- for the rest of us, please define "SR".

                  Comment

                  • Bob J.
                    Very Frequent User
                    • December 1, 1977
                    • 714

                    #24
                    Re: Rubber plugs on '63-'64 drum brakes

                    Originally posted by Wayne Midkiff (3437)
                    for the rest of us, please define "SR".
                    SR = service replacement

                    Comment

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