What is the best 13b engine to put in an RV9? 160-180hp. 6000 rpm max,
5000 cruise.

I plan to use RWS injection/ignition and either theirs or Marcottes redrive.

Thanks,

Neal

The more the power the better. For the simple reason you will
have more power at 9000 feet if you start with more power
at sea level. There is no weight penalty on the rotary to
have 250 p-ported HP at sea level. At altitude breathing (HP)
is the name of the engine game.

Obviously you don't have to use all the power at sea level if you don't
want to.