1966 Folding Yachtwin 3hp cooling

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  • July 25, 2022 at 8:05 pm #263595
    Samuel Phelps
    Participant

      US Member

      Recently purchased this motor . While running in the test tank it really wasn’t spitting water out of the little discharge holes above the LU . Nothing near what my non-folding 3 hp Lightwin does .. Looking at the impeller it looks in really good shape . Do these folders just not spit like the regular motors do ?

      July 26, 2022 at 7:30 am #263608
      crosbyman
      Participant

        Canada Member

        bucket testing could generate  lots of  churning and bubbles causing  less water to be pumped and sometimes overheating… are you comparing both motors under the identical conditions ??

         

        ……how the engine on the lake ?    is theengine getting hotter than normal

        Joining AOMCI has priviledges 🙂

        July 26, 2022 at 9:03 am #263618
        Samuel Phelps
        Participant

          US Member

          Haven’t had it on the lake yet . I have a video of both running if I can get them to post ..

          July 26, 2022 at 7:14 pm #263668
          fleetwin
          Participant

            US Member

            Well, there is a little grommet in the folding joint that helps seal the water pick up, not hard to check and see if it is present. I don’t really think there is and difference in cooling outlet performance between the folding/rigid models. It may be that it is time to replace the water pump impeller and check the housing for wear.

            July 27, 2022 at 4:51 am #263690
            Samuel Phelps
            Participant

              US Member

              The grommets are in place . I have a new impeller. This is the old one ..

               

              July 27, 2022 at 6:51 pm #263715
              fleetwin
              Participant

                US Member

                Well the picture is a little dark, and the impeller is still in the housing, but the housing “looks OK”. Have you replaced the impeller with a new OEM piece? There is also a little air bleed hole at the top of the housing that needs to be clean. Is this a fresh or salt water engine? You mentioned the grommet in the folding joint is OK, correct?

                July 28, 2022 at 4:52 am #263725
                Samuel Phelps
                Participant

                  US Member

                  I just got this motor so not sure where it’s been run . I suspect fresh water from the looks of it . I installed a new impeller and cleaned all the passages . The grommets look good where it folds together . Maybe when I ran it before I didn’t tighten the foot on as well as I should and it lost a little flow ?
                  Anyway I tested it again and it’s spitting water out nicely now . That was good to see .
                  I think we ok now ..Thanks guys ..

                  July 28, 2022 at 4:51 pm #263744
                  fleetwin
                  Participant

                    US Member

                    Cool!

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