1947 Evinrude Sportwin

Home › Forum › Ask A Member › 1947 Evinrude Sportwin

Viewing 7 posts - 11 through 17 (of 17 total)
1 2
  • Author
    Posts
  • November 1, 2022 at 7:04 pm #268554
    lindy46
    Participant

      Check compression, check spark, and check the water pump impellers before trying to start. That motor has two impellers and they are difficult to find. And if you find them, plan on paying a fortune for them. I have a 1948 Sportwin and luckily the impellers were good. I did have to replace a coil, and do a lot of work on the carb. Carb parts aren’t available so I had to fabricate parts/seals. My motor runs great now.

      November 5, 2022 at 11:32 am #268683
      Tim Murray
      Participant

        70 PSI in each cylinder.  High enough to continue the rebuild or cut my losses?

        Thanks

        November 5, 2022 at 2:48 pm #268686
        crosbyman
        Participant

          Canada Member

          I would try to run it.                 comp. may come up  anyway                      60’s      9.5 hp   sportwins run fine on 65 +    run it with a good shot of engine cleaner   on the next fill up.

          Joining AOMCI has priviledges 🙂

          November 5, 2022 at 9:53 pm #268692
          Tubs
          Participant

            Tim Murray wrote:

            70 PSI in each cylinder.  High enough to continue the rebuild or cut my losses?

            Thanks


            That pretty good for a motor from this time.
            Because of the fuel most compression ratios
            were only around 6 to 1.
            Tubs            .

            A "Boathouse Repair" is one that done without having tools or the skills to do it properly.

            November 12, 2022 at 9:30 am #268961
            Tim Murray
            Participant

              Any idea of the function of the attached fine-threaded plug is?  I was very concerned that I would cross-thread it and sure enough, that’s exactly what I did!

              Cross-threaded-plug

               

               

              November 13, 2022 at 4:36 pm #268998
              lindy46
              Participant

                Where is this part? Doesn’t look like anything on my Sportwin.

                November 13, 2022 at 4:47 pm #268999
                lindy46
                Participant

                  Oh, yours is the opposed twin. Not like mine.

                • Author
                  Posts
                Viewing 7 posts - 11 through 17 (of 17 total)
                1 2
                • You must be logged in to reply to this topic.