Home Forum Ask A Member 1931 Johnson OA-55 3hp.

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  • #293564
    Tubs
    Participant

      I got it in the fall. Unlike most motors, where you don’t know anything about its past, this tag reveals some of its history. I don’t know why I didn’t just through it away. After noticing what appeared to be some writing, I cleaning off the coating that covers this motor to see that, Lloyd Jones ( I believe somewhere is Nebraska) had it tuned up around July 31, 1961. Other than “to go with” I can’t make out anything else. Anyone able to make out some other part of it? Aside from the melted remains of what must have been sparkplug boots, the “new” plugs look to have never been fired. It would seem it hasn’t been run since then. Going by what covers this motor, it got put in an open building like a hay barn or machine shed where it was out of the rain, but little else. As the years went by, dust would collect on the motor. On those first warm spring days the motor would sweat, turning each new layer of dust into this hard crust. Its not on the gas tank, so maybe the tank was covered.  Its not known just when it left that storage to get “thrown” on a trailer, with a bunch of other motors, for a trip to western Illinois. That’s where it came to me. The gas tank, muffler, and exhaust pipe, have dents in them. Some of the dents in the gas tank may be a result of its most recent trip. Everything that is suppose to move, choke/throttle lever, gas cap, petcock, transom clamp thumb screws, magneto, are all frozen. I can just barely turn the motor, but once it moved I stopped. This is going to be a real interesting motor for me as I have never had one. While it shares many parts similar to those on the early Johnson’s, the gear case is only found on this and one other model. Neither motor is very common.  This thing is really a mess. I can’t wait any longer to get into it!!! Tubs

       

      A1

      A2

      A3

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

      #293570
      joecb
      Participant

        US Member

        Interesting history… and you even have the often missing carb snorkel

        Joe

        #293573
        opposedtwin
        Participant

          US Member

          Cool motor! Work your magic and keep us posted on your techniques, etc.

          #293587
          Tubs
          Participant

             

            Interesting history… and you even have the often missing carb snorkel

            Joe

            It’s there but has the typical damage. I haven’t had very good results with my efforts to straighten them. I can do OK on the straight part. I haven found a solution for the turn. The ID of the tube is close to 51/64. A search for a steel ball that size revealed, to my surprise, that they aren’t that hard to get. I’m going to give that a try on this one.

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

            #293588
            Bob Wight
            Participant

              US Member

              Tubs,
              That’s the type of motor that needs some skilled attention and in your hands it’s certainly in the right place! Keep us posted with regular updates.

              Bob

              1937 Champion D2C Deluxe Lite Twin
              1954 Johnson CD-11
              1955 Johnson QD-16
              1957 Evinrude Fastwin 18
              1958 Johnson QD-19
              1958 Johnson FD-12
              1959 Johnson QD-20

              “Every 20 minute job is only a broken bolt away from a 3-day project.”
              "Every time you remove a broken or seized bolt an angel gets his wings."

              #293609
              bob-d
              Participant

                US Member

                Tubs great start.
                What method are you thinking about in order to fix the tank dents?  Open the tank, or go down the filler neck?
                Hopefully Dixie Hammock will have a decal.
                Bob D

                 

                #293614
                Tubs
                Participant

                  I’m thinking I’m going to try my hot glue method but I don’t know if the glue will stick enough to pull steel. I don’t have to polish this tank so just getting it straight will do. Plan B would be remove one end and work it straight over a piece of exhaust pipe, like I do Row Boat Motor mufflers. (B H Repair) That would be the easiest and fastest. I’m flip flopping on how to remove one end though. And then I have to get  it back on. Not the best at soldering. I can get by doing the flat Row Boat Motor tanks but this thing is round. Steel tanks I usually save for last. They only take days. I have some time to think about it.    

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

                  #293617
                  joecb
                  Participant

                    US Member

                    Tubs, suggest start with a slightly smaller steel ball .. 3/4″ is about o.o47 smaller than 51/64

                    Joe

                    #293633
                    Gary Haight
                    Participant

                      US Member

                      Tubs- The best that I can make out on the tag with playing around and using filters and adjustments on my iPad is-

                      Loyde Jones   7-31-61

                      Tune up

                      best shot we have    (Taking a educated guess from what letters I can make out)

                      _____    ______   the belt to go with   (belt could also be bolt)

                      this is my guess. Hopefully someone else could do better.

                      gary

                      IMG_0578

                       

                      #293635
                      T….in Wisconsin
                      Participant

                        US Member

                        My first observation was that the air horn was there, dented but there. I was fortunate to pick up an A-25 with a decent carb & air horn and have others that look like yours.

                        I would think a ball bearing would be the tool to use. good luck.

                        T…

                        Air-Intake-Horn

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