NOT KNOWN FACTS ABOUT ROTARY ENGINE RX7

Early 12A engines also element a thermal reactor, comparable to the 0866 10A, plus some use an exhaust port insert to scale back exhaust noise. A lean-burn version was released in 1979 (in Japan) and 1980 (in the usa) which substituted a more-regular catalytic converter for this "afterburner". A serious modification with the 12A architecture was th