Rotary engines make a sound that's unique among combustion engines. The noise is like a dentist's drill channeled through an amplifier with the volume turned up. In this video, enjoy the cacophony has Rob Dahm's custom RX-7 races mildly tuned Jeep Grand Cherokee Trackhawk.
There's not much Mazda left in this RX-7. The engine is now a four-rotor setup with a massive 94-millimeter turbo supplying the boost. The total output is as much as 1,330 horsepower, but Dahm backs down the output to 1,000 hp for reliability.
