is the twin-turbo Variation in the 13B engine designed to power the 3rd-era RX-7 released in late 1991. Every single rotor on 13B-REW has only one combustion chamber volume of 654cc. With two rotors, the full displacement was 1308cc. Best in shape for your Mazda swap or alternative task.The new Renesis engine was however a one.3L rotary but the tur