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Listen to this insane 20 B-swapped RX-7 air strip the dyno

Mazda’s Mazda MX-5 Miata MX-5 is a lightweight, light on its feet, also making a loud noise as it strides.



There are some of us who don’t share at least some admiration for Mazda’s rotary engines, but every automotive enthusiast has an engine configuration they find particularly captivating. The most intriguing powertrains ever created are the high-revving automobile oddities, and with the correct modifications, they can be made to be incredibly powerful. We now have the opportunity to hear this insane 20B-swapped FD RX-7 race vehicle sing the song of its people thanks to PAC Performance over in Australia.

Due to its enormous 2.0-liter displacement, rotary enthusiasts frequently refer to the 20B, Mazda’s sole three-rotor engine, as the “big block” of the engine family. The JC Series Eunos Cosmo, the brand’s range-topper for the domestic market, was the only vehicle for which the engine was built. Between 1990 and 1996, less than 4000 of these opulent cruisers were produced, making the 20B an uncommon engine by today’s standards. The sequential twin-turbo engine was used for the first time in production, and it produced 276 horsepower and 296 lb-ft of torque. This output statistic is flawed because of the “gentleman’s agreement” concerning horsepower in Japan at the time; in reality, the 20B produced closer to 300 hp. This RX-7 racer’s developed engine produces a lot more than that.

PAC Performance may be found close to Sydney in the New South Wales town of Revesby. Due in large part to the enormous amount of billet machining work it completes for these motors, the performance shop is a well-known brand name in the rotaries industry. This specific 20B, according to Ingram Brothers Racing, has new internals, PAC billet center plates, and revised ports. Despite the factory twins being replaced by what seems like a huge turbo, the engine delivers a fantastic R26B impression. When the revs start to rise, the choppy and unpredictable idle continues to scream race car. This RX-7 will be a real contender at any track day, based on how the rest of the Ingram Brothers Racing setup seems on the dyno.