Based on the first generation FB Mazda RX-7 coupe first released in 1978, the RX-7 Evo Group B Works rally car was built between 1983 and 1987, controversially eschewing the Group B norms of all-wheel drive and enormous turbochargers. The RX-7 instead insisted on rear-drive and the use of a modified version of the standard car's naturally aspirated 13B twin rotor engine. The engine was fed by MRT-modified Weber 51A carburettors, feeding fuel directly into the rotor housing.
