Thanks for the comments, Lynn. Good stuff, but you sorta missed the point. This is not a planned project, it's a flying airplane so the question changes from "how do I do it" to "how do I use it". Its a street ported 2 rotor. The 6.5B single rotor comment was reference to the fact that I have a (hopefully short term) setup problem of some sort. 

> The weekend drifter kids are getting 700 HP at the rear wheels on their 95
> RX-7s. In too many cases, engine life is counted in minutes.
I'm looking for 280HP max

> Operating so close to the edge of the envelope seems to me to be in
> opposition to what you want from an aircraft engine.
Only if you don't know where the edge is.

> There are just very few people that ever get
> into the air without some difficulty in oil or water cooling, or both.
No problems in this area in 8 hrs of flying.

> I would contact an expert in turbocharging and have him select
I have the mods described in http://www.turbonetics.com.au/

> I would design the system to be incapable of more than a
> specific amount of boost, and then build in a popoff valve just above that
> value just in case.
I have a Blow Off Valve in the intake set for about 10 PSI

> A scat tube to blow on the central (bearing area) part of the turbo
> would be real good for long bearing life.
Interesting point. My exhaust augmentation sucks cold air past the turbo so this should help. The turbo has both water and oil cooling.

> Water temp 180 at cruise hot day climb 200. Oil temp 160 (ideal)
> at cruise, 180 is OK, 210 hot day climb. Power goes down above 160 oil temp.
I've told by another well respected rotary expert that the REW is designed to run at 203 - 212F, that oil temp should be kept below 240F, and should never regularly go over 248F. Everywhere I go I hear different numbers for these limits. I'm using 5-30 Castrol Synthetic.

Thanks again,

John