Will be the twin-turbo version of the 13B engine designed to ability the third-technology RX-7 released in late 1991. Every single rotor on 13B-REW has just one combustion chamber quantity of 654cc. With two rotors, the entire displacement was 1308cc. Perfect match for your Mazda swap or substitute challenge. Tagore https://shanexsjbr.timeblog.net/74650062/mazda-rx-7-engine-no-further-a-mystery