Reply To: Prop Shaft Identification Help

[Don]

I’m sure Frank can chime in here, but are you sure both those shafts are dimensionally identical in all areas? It appears as though the two gearcases use a different forward bearing along with the forward gear thrust washer, did you measure the prop shaft diameter on the forward gear side of the prop shaft? It almost looks as though the 23 spline shaft is a little thicker in your pictures, but who knows. So, if I had to guess, I would say that the 22 spline shaft was never used with the keyed prop nut…. But let’s wait for others to chime in….