When it comes to rotary swaps, we’re most accustomed to seeing Mazda’s 13B Wankel engine dropped into cars for its compact size and great power output. However, Mazda isn’t the only company that built ...

Engine swaps can be relatively straightforward, at least on paper. You take the power plant from one car, put it in another, button it all up and bingo, you have the custom machine you’ve always ...

A Wankel engine is a type of rotary engine, but not all rotary engines are Wankel engines. Wrapping your mind around this idea will help you to better understand the similarities as well as the ...

Rotary engines (also known as Wankel engines and Wankel rotary engines) are quite different from piston or "reciprocating" engines. One of the distinguishing features is that they don't need valves to ...

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, ...

Forbes contributors publish independent expert analyses and insights. Peter Lyon is based in Tokyo and writes about the car industry. Mazda’s rotary engine has been officially reborn, but not quite in ...

The rotary engine had its moment of automotive glory with Mazda, but while the Japanese automaker's rotary engines where small-displacement, high-revving, buzz bombs, one American startup tried a very ...

There is not one exact answer to how fast a snowmobile can go. While averages generally hover in a specific area for top speeds, so many factors are involved in the ride of a snowmobile, even a high ...