I have a new in the box Rotary engine and I have a couple of questions before I install it on my plane.

1. The manual refers to a pressure port on the muffler but mine does not have one. Does this engine need a pressurized tank?

2. What is the pressure port for on the crankcase? There is no reference to it in the manual.

3. Are accessory mufflers or extension pipes available for this engine? Due to the fact that the screws mount the muffler in one fixed location I am really going to have to hack my model up to use the muffler in it's stock configuration. (Not desirable.)

4. What is the preffered Oil mixture/ Nitro content for this engine. I use 15% Nitro with a Castor/synthetic mix in my other engines. Would this be suitable for the Wankel style engine or does it seem to prefer a higher or lower Nitro content?

I bought the engine to install in a .30 size plane that has a large round firewall and is modeled after a plane with a radial engine. The Rotary would be perfect in it and give it a very scale appearance but the muffler is gonna probably cause me to rethink this if I can't do something with it. I would really appreciate any ideas you might have.