Mazda achieved one of the greatest upsets in motorsport history by winning the world’s toughest endurance race using an engine design no other manufacturer dared to trust. • Mazda won the 24 Hours of Le Mans in 1991. • The victory was powered by a rotary (Wankel) engine, not a piston engine. • The winning car was the Mazda 787B. • It remains the only Le Mans victory by a Japanese manufacturer. • It is also the only rotary-engine car ever to win Le Mans. • The engine was naturally aspirated, prod

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70K views · 1.3K reactions | An In-Depth Look at the Mazda Rx-7 Wankel Engine | Engineering Explained | Facebook

The engine with no pistons. In 1957, engineer Felix Wankel did the unthinkable. He built a working rotary engine that had no pistons at all. Instead of cylinders firing up and down, it used a spinning triangle inside an oval chamber to generate continuous power with fewer parts and smoother motion. Mazda was the only car maker crazy enough to mass produce it, and they turned it into the RX-7, a lightweight sports car with a tiny engine that revved like a motorcycle. At just 1.3 liters, the Wanke