1971 Mazda Cosmo Sport
1971 Mazda Cosmo Sport

1971 Mazda Cosmo Sport

In May 1967, Mazda began selling the world’s first dual-rotor rotary engine car, the Cosmo Sport. It featured the 110-horsepower Type 10A engine (2 x 491cc) equipped with newly developed high-strength carbon-based apex seals, made by permeating pyrographite with aluminum molecules through a special sintering process. This type of apex seal resulted from Mazda’s independent development work and was proven durable and reliable through 1,000 hours of continuous testing. Even after a 100,000 km test drive, it showed only slight wear and none of the chatter marks known as “nail marks of the Devil.”

1971 Mazda Cosmo Sport
1971 Mazda Cosmo Sport
1971 Mazda Cosmo Sport
1971 Mazda Cosmo Sport