We've seen the diminutive Mazda MX-5 Miata swallow plenty of big engines ... replace his 515-horsepower "MADBUL" RX-7 and its twin-turbocharged, three-rotor 20B engine, his new ride is an NC ...

Its 13B engine produced 252 horsepower from a 1.3-liter engine thanks to a sequential twin-turbo ... That's what makes this RX-7's power output so incredible. Using a four-rotor engine instead ...

Three years later, after a complete engine rebuild, considerable dyno time, and various tweaks and changes, the four-rotor, AWD RX-7 is fully ... length 4-1 to 2 de-merge collector turbo manifold ...

From the unmistakable shrill howl of the four-rotor 1991 Mazda RX-7-001 GTO to the thundering Chevrolet V-8 growl of a 1985 ...