Would be the twin-turbo Edition of the 13B engine built to electricity the third-era RX-7 launched in late 1991. Each and every rotor on 13B-REW has an individual combustion chamber volume of 654cc. With two rotors, the total displacement was 1308cc. Perfect healthy for the Mazda swap or replacement task. https://mazdarx7turbo2engineforsa83693.is-blog.com/45722080/mazda-13b-rew-motor-for-sale-fundamentals-explained