Wankel/Rotory
Posted: Sun Mar 08, 2015 4:01 amIf you haven't implicated the idea or thought of it. I suggest maybe have the idea of Rotory engines as another design style for Mazda fans with up to a 4 rotor assembly.
(In all seriousness, not to be too direct, but please search. This is one of the most often suggested things, hundreds and hundreds of times it has been suggested.)