Home Forum Ask A Member 1935 evinrude sport four

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  • #182111
    tinkerman
    Participant

      US Member

      I have a 1935 evinrude sport four that I’m gonna put new rings in and see if I can up the compression a little. What kind of material do I need for the head/cylinder to block gasket. The old ones fell apart and were made of a super thin (think sheet of notebook paper) stiff paper like but not paper – no metal at all type . I’m sure someone here has substituted something. Not a problem cutting another one just unsure of the material to use. As usual all help is appreciated!

      It's a jungle out there.

      #182121
      Tom
      Participant

        US Member

        I use paper grocery bags for those and just grease them before use.

        #182129
        Randy in Tampa
        Participant

          I have a 31 sportfour and Garry Spencer worked on it with me and he used brown paper grocery bags also like Tom did, i’m sure you can buy thin gasket material also from the auto parts store to use, I don’t think it’s gonna make a difference in compression if the gasket is slightly thicker ……🤔

          Rotary valve Johnson’s Rule!

          #182130
          garry-in-michigan
          Participant

            Lifetime Member

            YEP – back in the day, as long as the surfaces were flat, we used unbleached butcher paper.
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            \ Garry in Michigan

            #182136
            garry-in-michigan
            Participant

              Lifetime Member

              To check the surfaces I used a piece af broken polished marble counter top with a sheet of 600 grit wet or dry carborundum paper stuck to it. With water or thin oil, it will quickly show any high spots. Dad used an unbelievably heavy bullet proof window from a bank that was being torn down. If your careful, plate glass works, as well as some polished floor tiles.
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              Garry in Michigan

              #182148
              tinkerman
              Participant

                US Member

                Thanks for the reply’s guys. Nice brown paper sack it is!!!

                It's a jungle out there.

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