PowerTech builds a tunnel boat prop for that motor with the cup poured into the mold, no beating and bending. I would say a 12 with heavy cup, that should bring the average pitch up close to 14 or so and allow you to raise the engine for maximum height. You need to understand how pitch numbers are attained. The prop is measured from leading edge to trailing edge about every inch apart from the hub to the tips of the prop. Take all those pitch readings, add them up, then average them. When you start adding cup, you raise the average pitch very quickly.
An old racing trick. If you want to boggle peoples minds, erase the 12 from the prop and stencil 18 on it. That should make them go hmmmmmmm
Why do you think all racers keep their props covered till the boat is in the water, no photos, no sharp minds to copy your prop???? You don't get to be US1 two years in a row by giving away all your secrets
Another word of advice when buying a used prop,,,, no-one sells their "A" prop. Run it before you pay.
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