Quote Originally Posted by Moseley View Post
Well even if it only displaces 1.3L per revolution it is also igniting 1.3L, compared to a 1.3L 4 stroke which ignites 650cc per revolution.

So technically a rotary, if compared to a piston engine displacement wise, should be compared to a 2 stroke.

I guess that is what I was getting at...
But it isn't a 2 stroke or a 4 stroke, so that is comparing apples to oranges. I understand what you are attempting to say, but the fact is that the rotary is just a completely different engine that doesn't fit into the same limitations. It also has it's own set of issues, due to design, that do not plague 4 stroke engines.
There is no such thing as fuel efficiency when you discuss a rotary. You simply determine if you make enough money to pay for the fuel that it will consume - then you go get a second job.
Bringing up the rotary was just to make a point in the hp/liter discussion. And that only came up due to 1civic thinking that 100hp/liter was some sort of performance figure. Last I checked, hp/liter does not directly translate into track times, either on the road course or the dragstrip.