Rotary engines differ from conventional ones in many respects — and one of them is the fact that they use two different spark ...

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, ...

Here's the process of making this rotary valve engine with a different intake and an exhaust system. It wasn't easy to start ...

While modern engines feature many tweaks and improvements on the original ideas, they usually aren't as interesting as the strange contraptions engineers experimented with in the early days. Take, for ...

When people defend that internal combustion engines (ICEs) still have a role to play in personal transportation, they are correct. Having an electric motor driving the wheels does not necessarily ...

The Mazda RX-8 has always had a cult following, but the rotary engine can scare off buyers who want something simpler to live with. That’s exactly why swaps like this exist. A V6-swapped RX-8 ...

Mazda’s rotary engine has been officially reborn, but not quite in the way you might think. Yes, we saw a drop-dead gorgeous Iconic SP rotary-hybrid coupe concept unveiled at last October’s Japan ...