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Yamato Propshaft

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  • Yamato Propshaft

    Dumb question but what diameter and thread pitch is the propnut for a Yamato gearcase? I know the shaft area where the prop sits is 9/16 but the threads are noticably smaller than and not sure what that size is.
    "In my many years I have come to a conclusion that one useless man is a shame, two is a law firm and three or more is a congress". -- John Adams

  • #2

    Re: Yamato Propshaft

    It should be 1/2-20 on one that's been converted
    M Miner likes this.

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    • #3

      Re: Yamato Propshaft

      Some of the newer shafts are fine thread, donít remember the dia.



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      • #4

        Re: Yamato Propshaft

        1/2-20 is a fine thread

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        • #5

          Re: Yamato Propshaft

          I chased the threads with a 1/2 - 20 die and it worked perfectly. Thanks for the responses.
          "In my many years I have come to a conclusion that one useless man is a shame, two is a law firm and three or more is a congress". -- John Adams

          Comment


          • #6

            Re: Yamato Propshaft

            New shafts I have and install are 9/16 - 9/16 X 20 threads.Made by Lee Tietze, I stock as a dealer.
            Been 9/16 treads for 2 years now.
            Tom



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            • #7

              Re: Yamato Propshaft

              Re: 9/16 Yamato Prop Shafts. The original thread was 1/2-20. I changed the thread to 9/16-18 two years ago.
              Matt Dagostino likes this.
              Lee Tietze
              Machined Components
              Aluminum, Try Racing Without It!



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              • Flatiron
                Flatiron commented
                Editing a comment
                What is the price for your Prop shafts

              • machinedcomp
                machinedcomp commented
                Editing a comment
                Prop Shafts are $90.00 each + $8.00 shipping
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