TOP RX7 MOTOR SECRETS

Early 12A engines also element a thermal reactor, comparable to the 0866 10A, and a few use an exhaust port insert to cut back exhaust noise. A lean-burn up version was introduced in 1979 (in Japan) and 1980 (in America) which substituted a more-conventional catalytic converter for this "afterburner". A major modification in the 12A architecture wa