Would be the twin-turbo Edition of the 13B engine meant to electric power the third-generation RX-7 launched in late 1991. Every single rotor on 13B-REW has an individual combustion chamber quantity of 654cc. With two rotors, the whole displacement was 1308cc. Perfect in shape for your Mazda swap or substitution https://rx7turbo2motorforsale40493.full-design.com/not-known-facts-about-rx7-engine-81323689