Could be the twin-turbo Edition from the 13B engine designed to ability the third-generation RX-7 released in late 1991. Each and every rotor on 13B-REW has an individual combustion chamber quantity of 654cc. With two rotors, the overall displacement was 1308cc. Excellent fit for a Mazda swap or replacement undertaking. https://rx7engine75659.blog2news.com/39472758/mazda-13b-motor-for-sale-fundamentals-explained