Wankel rotors of 13B The 13B could be the most generally produced rotary engine. It was the basis for all potential Mazda Wankel engines, and was created for over 30 decades. The 13B has no relation for the 13A. As a substitute, It is just a lengthened Variation of the 12A, getting 80 mm (three.In stark contrast into the component production regio