L 72 427 timing cover seal - NCRS Discussion Boards

L 72 427 timing cover seal

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  • Doug M.
    Frequent User
    • December 31, 1990
    • 68
    #1

    L 72 427 timing cover seal

    Wondering if anyone manufactures a double lip seal ?

    Using SKF 23300 now with an annoying slight drip.

    Thankyou in advance, and Happy New Year

    Doug
    Tags: None
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    • Mike T.
      Very Frequent User
      • December 31, 1991
      • 568
      #2
      Re: L 72 427 timing cover seal

      Doug - I just finished assembling a Bigblock for my 65 L78 Roadster and pretty sure I used that number SKF front timing seal. Haven't fired it up yet so hoping there will be no leaks but let me ask a couple questions. Was the hub on your old balancer in good shape or did you have to use a sleeve? And, when you installed the new timing cover seal, did you add in a light smear of silicone to the opening of the cover?
      PS - Sent you a PM regarding your L72.
      Thanks,
      Last edited by Mike T.; January 13, 2023, 03:33 PM.
      Mike T. - Prescott AZ.
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        • Mark L.
          Very Frequent User
          • July 31, 1989
          • 556
          #3
          Re: L 72 427 timing cover seal

          Doug, I had that problem. Usually it is related to wear on the harmonic balancer. Install a sleeve and I'd bet it gets resolved.
          Last edited by Mark L.; January 13, 2023, 03:51 PM. Reason: Incorrect
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            • Doug M.
              Frequent User
              • December 31, 1990
              • 68
              #4
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                • Joe L.
                  Beyond Control Poster
                  • January 31, 1988
                  • 43195
                  #5
                  Re: L 72 427 timing cover seal

                  Originally posted by Doug McClure (18547)
                  Mike and Mark,
                  Gonna ‘ try the sleeve, thanks

                  Doug
                  Doug------


                  The repair sleeve is of VERY thin material. With the repair sleeve it's CRITICALLY IMPORTANT that it be installed "straight-and-true". If it's not done PERFECTLY you'll have a leak worse than before. A special tool is available to assist this installation process but even with the tool if one is not exceedingly careful it won't end up well.
                  In Appreciation of John Hinckley
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                    • Doug M.
                      Frequent User
                      • December 31, 1990
                      • 68
                      #6
                      Re: L 72 427 timing cover seal

                      Joe,
                      Thanks, appreciate the information
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