Now, how that works in a racing application is another thing. Some of the late 80's F1 engines ran as much as 9.5:1 with 3.5 bar absolute manifold pressure and could make 700 odd HP for nearly two hour long races out of 1.5 litres. The thing that let them down at the time was the cave man injection of the day. The engines themselves were also the strongest thing I've seen this side of heavy duty diesel.
And you've had the privilege of playing with those things!
I don't know how a boosted high CR rotary would go. Wouldn't the apex seals be the weak link?
That's why I would shy away from a high boosted CR rotary. Rotary + Detonation = rebuild.
Actually, we've had great success with high CR boosted motors IN HOUSE for once! Rhys, our lead engineer, took his DAILY RIDDEN 2006 Hayabusa to the Texas Mile. His bike did a standing mile at 206 MPH! It has a stock, 11:1 CR motor and is running 10psi of boost. Rhys has put a lot of work into mapping it properly and sizing components to avoid detonation, and it shows.
The bike is AMAZING. He honestly rides in to work and back every day, and it has little to no lag. But at Texas, it beat a lot of very built bikes. I think credit goes to his tuning on this one.