Could be the twin-turbo version from the 13B engine intended to electricity the 3rd-era RX-seven introduced in late 1991. Each and every rotor on 13B-REW has just one combustion chamber quantity of 654cc. With two rotors, the whole displacement was 1308cc. Fantastic suit for the Mazda swap or substitute challenge. https://customrx747910.losblogos.com/37783716/mazda-13b-motor-for-sale-fundamentals-explained