Looking for Rings for 1956 Neptune 1.7 hp AA1

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  • November 8, 2024 at 5:53 pm #291998
    paulde51
    Participant

      Thanks in advance for any help in locating a set of Rings for a nice Neptune 1956   1.7 hp AA1 Serial Number J236UU.     I have every thing else don and ready to go on this motor and it is in remarkable shape so I am hoping to get this important step accomplished.    Thanks. Paul

      November 8, 2024 at 9:44 pm #292000
      Buccaneer
      Participant

        US Member

        Are you sure you need new rings? What’s your compression reading?
        Found some specs for a 1.7 hp, showing the rings diameter as 1.562,
        but nothing on the width of the rings. 1-9/16″ may be an odd ball
        size of rings to locate.
        There’s a vendor or two on the Internet that sell piston rings by size.
        Do a search on this site first for the ring size, vendors, etc.

         

        Statistics ;  For the 1.7 hp motors
        Cylinder diameter 1.562″
        Stroke 1.500″
        Bearings,   bronze bushings, both mains & rod
        High speed jet, one turn out.
        Idle jet 1/2 to 3/4 turn out.
        Fuel mix is 16:1
        Point gap is .020
        Plug gap .025, Champion J6C or J8J plug.
        Tillotson carburetor #AJ-21A on the model AA1
        Flywheel key  .125″ X .200″ X 1.00″

         

        Prepare to be boarded!

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