A SIMPLE KEY FOR MAZDA ROTARY ENGINE SALE UNVEILED

Early 12A engines also attribute a thermal reactor, just like the 0866 10A, and a few use an exhaust port insert to reduce exhaust noise. A lean-burn up Model was released in 1979 (in Japan) and 1980 (in the usa) which substituted a more-regular catalytic converter for this "afterburner". An important modification in the 12A architecture was the 6P