Would be the twin-turbo version of the 13B engine meant to power the third-technology RX-seven released in late 1991. Each individual rotor on 13B-REW has only one combustion chamber quantity of 654cc. With two rotors, the total displacement was 1308cc. Perfect match for the Mazda swap or alternative task. Common https://knoxfknop.suomiblog.com/the-basic-principles-of-rotary-engine-for-sale-54567289