rotary question

:
02 pro
i was talking to a guy at work to day and we were talking rotorys and he was saying that the 20b was a two rotor engine and i was thinking that someone had told that it was a three rotor engine
because a 13b i know is a two rotor and it 1.3 liters and the 20b is a three rotor 2.0 liter
and it makes sense because if u devide 1.3 liters to get what each rotor is in liters you come up with .65 liters and if you add that to 1.3 you get 1.95 liters witch would give you a 2.0 liter engine
am i right or did i fall off the automovitive deep end
 
20B is absolutely 100% without a shadow of a doubt, 3 rotor. Most 20b's are 13B's with an extra rotor housing as the engine itself is pretty rare.

you can take it one step further and add another rotor housing..and get a 26B :)

there are other 2 rotors... 12A comes to mind....but there are others....maybe thats where this guy is getting confused?
 
Confirming 3 Rotor.

It's from the 787B

EDIT: Perhaps Not... :)

mazda_787b.jpg
 
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