Since the former Toyo Kogyo Motor Corp. introduced the first Japanese rotary car in 1967 (the NSU Spider, launched in 1964, was the world’s first rotary engine production car), the rotary engine has had a roller-coaster ride, one which mostly has been down in recent years since the Mazda RX-7 was pulled from the U.S. market. The first unit, the twin-rotor 10A, had a displacement of 982 cc. The engine, which produced 110 hp and 96 lb.-ft. (130 Nm) of torque, was installed in the Cosmo ...

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