rear main seal

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  • Jack Ottofaro (28026)
    Very Frequent User
    • August 1, 1996
    • 424

    #1

    rear main seal

    Hi everyone,

    First, thanks for all the help on the oil pan. I evened it out with a ball-peen hammer which worked great.

    Now that I have the pan off I can get a good look at the rear main seal area. It doesn't appear to be leaking. I'm basing that on the fact that the small counterweight on the crankshaft between the seal area and the bellhousing doesn't appear to have any oil on it. The engine (69' 427) was rebuilt about 7 years and 5000 miles ago but the car has sat for 5 years. I've put about 1000 miles on it since then and it was leaking a lot of oil around the pan. I assumed the seal was leaking also. What should I be looking for to determine if the rear seal is leaking? Should I replace seal anyway since the car sat so long? I guess I'm a little hesitant since you have to remove the bearing cap but from reading the instructions it seems like it is a straightforward job.

    Thanks in advance,

    Jack Ottofaro
    Jack Ottofaro
  • Joe Lucia (12484)
    Beyond Control Poster
    • February 1, 1988
    • 42936

    #2
    Re: rear main seal

    Jack-----

    As long as you have the pan off, replace the rear main seal at this time. It's very easy to do and removing the rear main cap is no problem, at all. Use seal GM #10117767. Follow the procedure EXACTLY as described in your Chevrolet Factory Service Manual and don't neglect to use sealant in the areas shown in the diagram in the manual. Reintsall the main cap and torque the bolts to specifications. That's all there is to it.
    In Appreciation of John Hinckley

    Comment

    • Clem Zahrobsky (45134)
      Expired
      • January 1, 2006
      • 9427

      #3
      Re: rear main seal

      see my post on the CRPL board as i point out the problems with aligning the rear cap on a BBC

      Comment

      • Kevin Travers (38602)
        Expired
        • September 1, 2002
        • 84

        #4
        Re: rear main seal

        Clem, where exactly is that post you are referring to? I would be interested in reading it also. Thanks. - Kevin

        Comment

        • Clem Zahrobsky (45134)
          Expired
          • January 1, 2006
          • 9427

          #5
          Re: rear main seal

          go to http://archives.gigo.com/crpl/2003-01/maillist.php look under 11:12

          Comment

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