Long before Felix Wankel became synonymous with rotary engines, an inventive Hungarian-American engineer named Stephen M. Balzer secured one of the earliest patents for a rotary-powered automobile on ...

The oft-rumored, long-awaited Mazda RX-7 sports car is now a reality. Since 1974, rumors have persisted that Toyo Kogyo was preparing a brand-new, rotary-powered, sports-type vehicle to compete ...

Launched in the late 1960s, the Ro 80 wasn't just the world's first mass-produced sedan with rotary power, but also one of the most innovative production vehicles of its era. Follow us: The rotary ...

Think you know everything about rotary engines? Well have you ever heard of the bi-rotary engine that mixes pistons and ...

Got a burning question or simply need some advice with problems you’ve encountered while wrenching on your current/future projects? Ask our automotive guru Eric Hsu anything—literally, he’s going to ...

Displacement: 15.9 L (970.38 cu in.) Bore and Stroke: 115 mm (4.53 in.) x 170 mm (6.69 in.) The rotary engine reduced rough the running and overheating of early air-cooled engines, namely.