Will be the twin-turbo Variation in the 13B engine made to energy the 3rd-era RX-seven introduced in late 1991. Every rotor on 13B-REW has only one combustion chamber quantity of 654cc. With two rotors, the total displacement was 1308cc. Fantastic in good shape for a Mazda swap or substitution undertaking. https://built-13b-motor-for-sale91234.tblogz.com/the-best-side-of-mazda-13b-motor-for-sale-52054937