Wankel rotors of 13B The 13B will be the most generally manufactured rotary engine. It had been the basis for all long term Mazda Wankel engines, and was developed for over 30 years. The 13B has no relation for the 13A. Alternatively, it is a lengthened Edition of your 12A, getting 80 mm (three.Lots of decide to pre-blend their gasoline with oil t