You'd think measuring an engine's displacement would be simple, but there's a long history of trying to figure out how to categorize the Wankel.

In theory, Wankel-style rotary internal combustion engines have many advantages: they ditch the cumbersome crankcase and piston design, replacing it with a simple, single-chamber design and a thick, ...

Imagine triangles spinning around a shower curtain rod inside a beer keg—that is an elemental description of the screaming Wankel rotary engine. This powerplant is beloved by gearheads the world over ...

In order to understand the value of the correct spark plugs in a rotary engine, you first must understand a bit of how a ...

Although it showed plenty of promise during development, the rotary engine was never widely used. Rotary (or Wankel) engines are renowned for smoothness, but they chew through fuel and lack torque ...

For something so simple in its make-up the Mazda rotary engine is remarkably versatile. Whether you’re talking 13B or 20B, naturally aspirated or force fed, it’s hard to beat the power per cube ratio ...

Everyone generally knows about piston and rotary engines, with many a flamewar having been waged over the pros and cons of each design. The “correct” answer is thus to combine both into a single ...