Is definitely the twin-turbo Model in the 13B engine made to ability the 3rd-technology RX-7 launched in late 1991. Just about every rotor on 13B-REW has an individual combustion chamber volume of 654cc. With two rotors, the total displacement was 1308cc. Great suit for a Mazda swap or alternative venture. https://codydzske.activoblog.com/47057729/mazda-13b-motor-for-sale-fundamentals-explained