Reply To: Looking for Rings for 1956 Neptune 1.7 hp AA1

[Buccaneer]

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″

 

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