THE ROTARY ENGINE
Felix Wankel invented the rotary engine in the 1950s, but Mazda perfected it. Where conventional piston engines use reciprocating motion—pistons traveling up and down—the Wankel rotary uses a triangular rotor that spins in an epitrochoidal chamber. Fewer moving parts. Smoother power delivery. Higher specific output. The theory was elegant. The execution was extraordinarily difficult.
Mazda committed to the rotary when every other manufacturer abandoned it. Apex seal durability. Oil consumption. Heat management. Emissions compliance. Each problem required years of metallurgical research and engineering innovation. By 1991, when the FD RX-7 launched with the twin-turbocharged 13B-REW, Mazda had solved problems that defeated NSU, Citroën, and Mercedes-Benz.
The result: 255 horsepower from 1.3 liters of displacement. An 8,000 RPM redline that arrives almost instantly. Power delivery so linear and smooth it feels like a naturally aspirated engine with supernatural torque. The sequential twin-turbo system eliminates lag while maintaining high-end thrust. The 13B-REW doesn't just defy conventional engine physics—it operates on different principles entirely.