1954 Elgin 7.5 hp 571-58772 cooling question

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  • July 2, 2018 at 12:48 am #10437
    neps989
    Participant

      US Member

      Hello everyone.
      Looking for some information on a 1954 Elgin 7.5 hp. I have replaced the water pump impeller and coils, and cleaned carb. Motor fired on second pull and stayed running on fourth pull. It has water coming out of exhaust housing where the decal says cooling water flow indicator. While running in test barrel, the water flow stops and turns to steam. I don’t want to overheat this so I am asking for advice. I have read online that there is a washer in the water pump housing that has to be installed properly. I have searched online and have not been able to locate any diagrams of the impeller or the washer. I am wondering if it is missing from my motor? I replaced the impeller several months ago and do not remember seeing a washer. If it is missing would it cause this steam issue? Any advice would be appreciated.
      Thank you
      Rob

      July 2, 2018 at 1:20 am #78858
      Buccaneer
      Participant

        US Member

        I was looking for information on your motor, but not finding the correct data.
        Is your water pump the traditional 5 or 6 vane rubber impeller type,
        rotor with carbon vane, or a "wobbler" type?

        Prepare to be boarded!

        July 2, 2018 at 1:28 am #78861
        neps989
        Participant

          US Member

          Thank you for responding. My impeller is 10 vane rubber type.

          July 2, 2018 at 1:53 am #78865
          Buccaneer
          Participant

            US Member

            Not sure if this will be of any help, but it show the 10 vane style
            impeller, but not sure what HP motor.

            Attachments:

            Prepare to be boarded!

            July 2, 2018 at 2:15 am #78870
            neps989
            Participant

              US Member

              I would have to say mine is like the last diagram. I will pull it apart again and take another look. I do not remember seeing number 34 in my pump assembly.
              Thank you
              Rob

              July 2, 2018 at 3:56 pm #78894
              SCOTT BOGUE
              Participant

                US Member

                If the old impeller lost pieces or whole vanes, they can get inside the block and cause problems.

                The diagram is from a 1957 but shows a Water Pump Gasket.

                Attachments:

                July 2, 2018 at 4:42 pm #78898
                neps989
                Participant

                  US Member

                  Thank you for the diagram and parts list. I will pull mine apart and make sure I have all the parts in the right order. The old impeller was intact and surprisingly in good shape. I just thought it would be a good idea to replace it. This motor has been sitting for quite some time so maybe something is plugging up the cooling passages. I will try to flush it out.
                  Thank you
                  Rob

                  July 2, 2018 at 8:41 pm #78911
                  frankr
                  Participant

                    US MEMBER PAY BY CHECK

                    Somebody mentioned pieces of impeller causing blockage. Actually, that was pretty common on Elgins of that type.

                    July 6, 2021 at 6:47 pm #242114
                    MarinerRacing
                    Participant

                      To replace the impeller on this motor, does the powerhead have to be removed to disconnect the shift shaft?

                      July 6, 2021 at 7:54 pm #242122
                      frankr
                      Participant

                        US MEMBER PAY BY CHECK

                        No, it is disconnected behind the metal clip #26.

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