You guys proubly dont remember, or just wern't around rotary's back in the day....but the 74 through 85's had a little mechanical oil injection pump. You could set it to your throttle position and control how much oil they injected. this was back in the old carburated days. I havent tried it myself, but I would bet it wouldnt be hard to mount one of these on a newer motor. The 73 and earlier had the same pump but it had a different bolt pattern and I dont think they would work. I might even have an old one laying around. I'll try to get a pic.

Bob Mears
Supermarine Spitfire

Bob,

 The "little injection pump" I refered to was exactly that. ALL rotaries have some form of the OIL INJECTION PUMP. What I was refering to was the fact that the fairly crude pump used in the earlier days has changed into an electronically controlled metering pump. Mazda has been trying to inject as little oil as possible because it spoils the HC emissions level somewhat. The RX-8 pump is the most sofisticated pump so far. But they cost like $500.00! The fact is I like the separate tank with 2-cycle oil. I believe Richard Sohn made a conversion system.

Bill Jepson  (Going for the simplest system and running oil-in-fuel.)