Wankel rotors of 13B The 13B could be the most generally created rotary engine. It had been The premise for all upcoming Mazda Wankel engines, and was generated for more than 30 decades. The 13B has no relation towards the 13A. As a substitute, It is just a lengthened version from the 12A, possessing eighty mm (3.Definitely, hitting the redline id