Home Forum Ask A Member Sealant or not on old NOS fiber gaskets?

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  • #304771
    Stewart Mayer
    Participant

      US Member

      Hi,

      I’m new to the AOMCI, I’ve fixed up a few outboards over the years.  I’m a high school engineering teacher and and we have purchased 8 old 1950s motors from 3-10hp so the students can learn how they work by getting their hands dirty.  Hopefully we can get them to run!  T-mike was kind enough to speak with our class via zoom to get us started, thanks again if your reading this!    We have taken the motors all apart, and unfroze the half that were frozen, now we are in the re-assembly stage of the powerheads.  I’ve purchased most of the replacement gaskets off ebay and they are mostly NOS (new old stock).  I know that sealant on gaskets is not generally recommended, but these gaskets look quite old and brittle, i’m not sure how much compression they have in them to form a tight seal.  They look to be, presumably, the asbestos type, some thicker than others.  Should we use some sort of thin sealant on these old gaskets to help them seal, and if so what kind?  Thanks!  Stewart

      #304773
      Stewart Mayer
      Participant

        US Member

        … one thing I’ve read is that the head gasket is designed to absorb and swell when in contact with water, is that true?

        #304782
        JACQUES
        Participant

          Canada Member

          get this book  for students …free bible

          https://www.socalaomci.com/library/johnson_service_manual_10th_edition.pdf

           

          check for cracked coils or bad condensers !!

          http://www.youtube.com/watch?v=ga1Cjymj6ms&feature=youtu.be

          Joining AOMCI has priviledges 🙂

          #304784
          JACQUES
          Participant

            Canada Member

            OMC outboard related articles

            Joining AOMCI has priviledges 🙂

            #304785
            Stewart Mayer
            Participant

              US Member

              Thank you very much for the links 🙂

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