64 differential fill plug gasket or not? - NCRS Discussion Boards

64 differential fill plug gasket or not?

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • John F.
    Extremely Frequent Poster
    • March 23, 2008
    • 2395
    #1

    64 differential fill plug gasket or not?

    I decided to pump out as much fluid as I could and refresh with new. Castrol sells a differential fluid with posi additive. Is there supposed to be a gasket? or just the posi tag?
    Tags: None
      • Top
    • Joe L.
      Beyond Control Poster
      • February 1, 1988
      • 43193
      #2
      Re: 64 differential fill plug gasket or not?

      Originally posted by John Ftacek (48800)
      I decided to pump out as much fluid as I could and refresh with new. Castrol sells a differential fluid with posi additive. Is there supposed to be a gasket? or just the posi tag?
      John------


      1964 was the last year to use a straight thread plug and requires a gasket. I believe the original gasket was made of leather. 1965 and later use a tapered thread plug and require no gasket.

      By the way, the above assumes that your carrier has the original cover and not a later 65-79 style cover installed as a SERVICE replacement. If it has the later cover, it will require the later tapered thread plug.
      In Appreciation of John Hinckley
        • Top

        Comment

        • John F.
          Extremely Frequent Poster
          • March 23, 2008
          • 2395
          #3
          Re: 64 differential fill plug gasket or not?

          It is the straight thread plug. Thanks Joe!
            • Top

            Comment

            • Dan H.
              Extremely Frequent Poster
              • July 31, 1977
              • 1365
              #4
              Re: 64 differential fill plug gasket or not?

              John, be sure to use thread sealant also for a nice dry plug area.
              Dan
              1964 Red FI Coupe, DUNTOV '09
              Drove the 64 over 5000 miles to three Regionals and the San Jose National, one dust storm and 40 lbs of bugs!
                • Top

                Comment

                • Gary R.
                  Extremely Frequent Poster
                  • April 1, 1989
                  • 1796
                  #5
                  Re: 64 differential fill plug gasket or not?

                  Those plugs are machine threads, thus the need for the gasket. By 65 they went to the 3/4 npt as Joe mentioned. Some guys use an "o" ring to seal between the plug and housing. The gasket will work though.
                    • Top

                    Comment

                    • John F.
                      Extremely Frequent Poster
                      • March 23, 2008
                      • 2395
                      #6
                      Re: 64 differential fill plug gasket or not?

                      From outside in, I went plug, posi tag, "O" ring. I also ordered a gasket if I need one.
                        • Top

                        Comment

                        Previous template Next
                        Working...

                        Debug Information

                        Searching...Please wait.
                        An unexpected error was returned: 'Your submission could not be processed because you have logged in since the previous page was loaded.

                        Please push the back button and reload the previous window.'
                        An unexpected error was returned: 'Your submission could not be processed because the token has expired.

                        Please push the back button and reload the previous window.'
                        An internal error has occurred and the module cannot be displayed.
                        There are no results that meet this criteria.
                        Search Result for "|||"