Hi



My idea for a jet boat is to mount a rotary engine on top of the jet unit and drive through a Gates Belts and Pully system. I will need a counter rotating engine.



Can the end plates be swapped when rebuilding the engine?



Thank you for your knowledge.

No they can't be swapped - it's not that simple.



You're best bet is an opposing gear to reverse the powerflow direction from the flywheel and drive your boat with the opposing gear.

how about just running the engine backwards? peripheral intake side exhaust? youd need to find a way to spin the oil and water pumps the correct way....

FD waterpump but belted like an FC.



The oil pump would need to be an extrnal racing type.

Turn the engine around and drive from the other end. Sandwich a plate between the engine and pan to support a bearing ahead of the front pulley. So the crank nose is not placed in bending.



Piece of cake.



Lynn E. Hanover

Haven't the airplane people done this sort of thing? I thought you could just turn the engine around like Lynn mentioned. I'm no expert and have no experience with this, I just remember reading about it.