The Mazda 787B is famously powered by the Mazda R26B engine, a highly distinctive and powerful rotary engine. This unique 4-rotor, naturally aspirated engine played a pivotal role in the car's historic victory at the 24 Hours of Le Mans in 1991, making it the only rotary-powered car to ever win the prestigious endurance race.
Engine Specifications and Design
The R26B engine is a testament to Mazda's innovative approach to engine technology. Unlike traditional piston engines, the R26B utilizes four rotors that spin eccentrically within their respective housings, providing exceptionally smooth power delivery and a characteristic high-pitched sound. Its naturally aspirated design means it relies solely on atmospheric pressure for air intake, without the aid of turbochargers or superchargers.
Here are the key technical specifications of the Mazda R26B engine:
| Specification | Detail |
|---|---|
| Engine Type | Mazda R26B 4-rotor naturally aspirated |
| Displacement | 2,616 cc (159.6 cu in) |
| Mounting | Mid-engined, longitudinally mounted |
Unique Characteristics
The design of the Mazda R26B offered several advantages crucial for endurance racing, including its compact size and light weight relative to its power output. The engine's longitudinally mounted, mid-engined configuration significantly contributed to the 787B's balanced weight distribution and superior handling. This setup, positioning the engine between the cockpit and the rear axle, optimized the vehicle's center of gravity, enhancing its performance on the track. The R26B is renowned for its durability and reliability, which were critical factors in its success at demanding races like Le Mans, alongside its iconic and unique sound.
