I guess this would be true, but when you eliminate timing overlap, don't you also eliminate most of the power advantage? 

 

NO, it does not. Every piston engine has overlap, with far worse consequences as the valves are very close together.

 

It just seems like a mild mannered PP is a waste of time, UNLESS it's the only means to an end, such as in Richard and George's custom side plated production.

 

Don't forget that a good manifold will be needed on the renesis as well. A BAD manifold can cost as much power on a side ported engine as a PP. The reason for the no overlap side port engine is SMOG. The lack of overlap, and the charge dilution contributes less to power. The reason the renesis makes good power is the size of the side ports. Look at the complexity of the manifold on the RX-8.  I highly respect Tracy's work, which is designing a simpler means of converting the engines available without extensive modification. My personal guess is that if Tracy applied his knowledge of the induction system and EFI to a PP engine He would blow away the renesis. This might not be a result he could sell to all of his customers though. Run your renesis Rusty, I'm sure you will be happy with it. I am just saying that I believe your desire for a high power single rotor could be met easier with the PP. That doesn't mean that the PP is the only way to get there.

Bill Jepson