yes the rotary seal is there main problem,,,,plus rotary motor mix crude oil in with its gas,,like a 2 stroke motor does,,,one of the reason they keep being banned by the envirmental people,,lol,,bad polution,,but they are quick and very light,,,but a dieing breed of motors,,too bad,,i think there very cool,,i know a guy who built them for a living,,very costly motors to pump up
most people are taking mazda rx7s and sticking 302 v8s in them,,they fit under the hood air cleaner and all,,just flip over the crossmember,,and all the wiring hooks up,,because mazda is pretty much ford,,lol,a mazda rx7 with a stock 302,,,225 horses,,,will have the same power to weight raito as a ford ac cobra,,,will run allmost 12 secs in the quarter mile i hear,,and thats just stock,,lots cheaper to build up a 302 then a rotory motor,,and 302 will last longer,,,one of the reason there all going over to v8s instead of the poor dieing rotary motor,,good motor,,just spendy to build