Home Forum Ask A Member Thor twin carb question

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  • #255003
    opposedtwin
    Participant

      US Member

      7577092E-4C44-4CA8-B6CD-31E7BC94272B

      77619114-75D7-4454-A617-E960081BC9BC

      194BB8DF-0C1D-4370-AAF0-5521414C863D

      BDA0224F-F676-471A-80A8-D21A979462EE

      On this Thor twin poppet valve carb I can’t see how to remove  the pin from the cork float. No tiny spring clips like on many models but there is a wire (see photos) running through the cork. Maybe it twists around the bottom of the float pin? Don’t want to manhandle anything and cause damage.

      Anybody been here before?

      Any advice welcome! And thank-you!

      Scott

      • This topic was modified 2 years, 10 months ago by opposedtwin.
      • This topic was modified 2 years, 10 months ago by opposedtwin.
      • This topic was modified 2 years, 10 months ago by opposedtwin.
      #255020
      Buccaneer
      Participant

        US Member

        It looks like someone made a float pin out of a 12d nail,
        and put a loop of bailing wire through the cork, and perhaps
        twisted the cork so the wire wrapped around the float pin.
        Just a guess, but I’d did it out by any means possible and
        start over fresh. I’d be surprised if that’s an original setup!

         

        Prepare to be boarded!

        1 user thanked author for this post.
        #255024
        opposedtwin
        Participant

          US Member

          Thanks Buc! I think we’re on the right track with that. I believe it’s a nail too. The function of the pin is to rise with the cork float as fuel enters the bottom of the bowl and seal it to prevent flooding, correct? I wonder if this homeade pin is doing the job. I guess I’ll find out arter I get it cleaned and rebuilt.

          I have not seen this mixing valve/float chamber set up before. This one is from the late 30s. Are there other models that combine the mixing valve with a float bowl like this one?

          Scott

          #255030
          The Boat House
          Participant



            There is no way that was working. Its
            often a challenge to get the right parts to
            seal good enough so the curb doesn’t run
            over. With luck the seat isn’t damaged.
            PM me your address and I’ll send you a
            float pin and a couple clips to position
            the cork you can try.
            This Pal Carb has the mixing valve and
            the float bowl compiled. Many others.
            Tubs

            1 user thanked author for this post.
            #255031
            49morphew
            Participant

              US Member

              Requires special Thor factory tools for removal/replacement. Very hard to come by.

              #255034
              opposedtwin
              Participant

                US Member

                Requires special Thor factory tools for removal/replacement. Very hard to come by.

                Ha ha! Probably made of low grade steel with no bearings and rust in less than 3 days after exposure to moisture of any kind.

                Good old Thorwald Hansen! 🤣

                #255035
                opposedtwin
                Participant

                  US Member

                  A110826A-CA9A-4F76-8723-FA73600A8242



                  There is no way that was working. Its
                  often a challenge to get the right parts to
                  seal good enough so the curb doesn’t run
                  over. With luck the seat isn’t damaged.
                  PM me your address and I’ll send you a
                  float pin and a couple clips to position
                  the cork you can try.
                  This Pal Carb has the mixing valve and
                  the float bowl compiled. Many others.
                  Tubs

                  Great picture Tubs. I may have a spare gloat pin in my parts stash. What motor is the pin from that you had in mind?

                  And I agree. The PO flattened the nail and drilled a hole to route the wire. Pretty ingenious but that’s probably why the motor got parked. 5F54077D-88B6-4891-BACD-A13D90930452

                  #255039
                  The Boat House
                  Participant



                    Not sure. One from a dozen spares I have.
                    The angle seems to be the same on all of them
                    although they came from different mixers.
                    That wasn’t working. Why it is in there?
                    Getting these to seal good enough with
                    the right parts is hard enough. I gave
                    up on the carb that came on this motor.
                    Got another and still spent 2 days getting
                    that replacement to the point it is acceptable.

                    Tubs

                    #255040
                    opposedtwin
                    Participant

                      US Member

                      Here is a picture of the seat. Please let me know your thoughts. Looks normal to my untrained eye.

                      Another concern is the packing nut for the adjustment needle. It looks like the seat in the carb body would require a tapered packing nut. The nut I have is not tapered however. Do you think it is supposed to be? B750421A-B07B-4024-9272-CA09740EEC5A
                      481DC82C-4AEC-4C3A-A326-BDB524510CA6
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                      3DBDF227-144A-4205-8E0B-13F506249DA9

                      #255069
                      The Boat House
                      Participant



                        Seat looks OK in your picture. When you get
                        the needle spin it in the seat with some tooth
                        paste keeping it aligned as it is when the float
                        bowl cover is on. If you want to try a polish rub
                        some between your fingers to be sure there isn’t
                        any grit. No mail today. I’ll get it out tomorrow..
                        Packing nut looks OK to me. It looks to have
                        the same taper inside as the carb body. Tightening
                        will push the packing around the shaft of the needle.
                        Tubs

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