The rotary engine was an unconventional design that delivered great power for its size. Here's what's good and bad about it.

Rotary engines come in all sorts of shapes and sizes. They can be as large as this six-rotor unit powering a Mazda RX-4 drag car in New Zealand, or as small as this 2.4-cc single-rotor engine above.

Toyan, a company that makes working miniature engines, has made what is claimed to be the world’s smallest rotary engine. Despite its tiny stature, the 0.0024-liter engine can still howl. Purchased by ...

While Rob Dahm’s garage is no stranger to monstrous rotary engines, including four-rotor units cranking out more than 1,000 horsepower, this one is mind-bending. Here we have a massive, ...

You hear endless myths about the Mazda RX-7, from breathless praise of its “magic” to horror stories about blown apex seals.

Do you remember Gulliver's first voyage to the island of Lilliput? The indigenous people there were less than 6 inches (15 cm) tall. That's almost twice the length of a Hot Wheels diecast vehicle.

The automotive world hasn’t seen a rotary engine in production since the Mazda RX-8 was axed in 2012. However, the Crighton CR700W is bringing it back in spectacular fashion in a machine billed as the ...

The rotary engine, previously a staple in Mazda's lineup, is an engine design that foregoes the round piston and singular chamber of a regular reciprocal internal combustion engine. Instead, the ...

There is no such thing as a torque motor. Any engine that has torque has horsepower. Any engine that produces 300 lbs.-ft. of torque at 3000 rpm has 171 hp at that engine speed.Anyengine—long stroke, ...