Reply To: Can this cylinder be repaired

[Tom]

Piston pin grooving is a very common problem with the Model N Sportwins.  Difficulty lining up the holes in the piston and pin during assembly, using the correct size and material cotter, and knowing how to distort the pin once in place were likely contributing factor.

I’ve run a few motors with grooves worse than yours.  They sound a little funny.  But remember that they ran long enough to do the damage.

T