I am a big fan of the rotary as I was involved with 3 different race teams back in the early 80s that raced them in the IMSA GTU class. At that time there was a big protest by the recip guys that the rotary had an unfair advantage and made more hp than the 2.5 liter Datsuns and Porsches. Well I can tell you I spent many hours on making special parts and testing on the dyno and we never made more than 305 hp on a 12A with periferal ports. This was done with an engine that we built just for development work and it was built using "race tested" parts, ie. OLD. and used a mechanical fuel injection system that had a pair of 50mm slide valve throttles and a Kugelfisher injector from a BMW 4 cylinder race car. We tried lots of things, including 2 stroke style expansion chambers and every kind of port configuration you could think of and found that the standard Mazda race parts were the best. The engine like to be well broken in as they got more hours they ran better. We also found out that they liked to run lots of oil temp. Running the oil at 275 deg f was good for about 10-15 hp over running at 175 F. We never saw much more than 160-165 ft-lb of torque, we got 175 ft-lb once by making the injector stacks about 15 inches long. This got us thinking about making the intake lenght variable but the development money was gone by then. Mazda did this with their GTP cars.
The rotary had two real advantages in my mind, 1. They were "anvil" reliable. We would run 24 hour races with a 9500 rpm limit and 12 hour races at 10,000 and sprint races at anything it would take to win! 2. The rotary has a very low moment of inertia for the rotating parts, which means that they rev really fast. Add a two plate 6 inch dia clutch and a spidered flywheel and a good gear box and they would beat anything out of a corner.
If SCTA would go to a 2 times factor instead of the present 3 times sweep volume factor I would build my future lakester with a rotary in a heart beat! You can rebuild one in a couple of hours and again you just about can't break them.
What did you say Rex? Hello...hello... Rex you there...
I musta spent my time at the IMSA races to close to Cunninghams weed wackers.
See ya later cause I'll never hear ya.