In this video, I explore a novel rotary engine design that addresses the sealing challenges of traditional rotary vane ...

Never doubt the effectiveness of a shorty exhaust header, a better carburetor, and a hemispherical combustion chamber design.

The valveless pulsejet engine is one of the simplest known engines, consisting of just a hollow pipe with no moving parts.

The history of the first Hemi engine from Dodge is pretty straightforward, but it turns out that the tale behind the first engines with hemispherical combustion chambers requires going down a much ...

A vital piece of gas engines, combustors -- the chambers in which the combustion powering the engine occurs -- have the problem of breaking down due to fatal high-frequency oscillations during the ...

HOT ROD’s archives are chock-full of brilliant tech reports that truly are timeless. This one, drafted by Jim McFarland for our February 1972 issue, provides an extensive look at how important airflow ...

Gasoline direct injection (DI) engines have been lurking in the shadows of gasoline-burning, internal combustion engine development for decades but are now becoming mainstream. This is all good, as DI ...

It's only natural for minds to run to Chrysler when the word "hemi" comes up in conversation. While Chrysler didn't invent the hemispherical combustion chamber engine, with that honor going to Allie ...

A better mousetrap? Even now, as electrification seems poised to end the internal combustion engine’s long run as the transportation motivator of choice, enterprising tinkerers continue to propose ...

Click to open image viewer. With a thrust of 25 tons, the V-2 engine was the first large liquid-fuel rocket engine in the world and powered the world’s first ballistic missile, the German V-2 of World ...