It looks like GM is working on modernising two-stroke engines by tackling their emissions problem. This could open a whole new chapter for internal combustion. It’s been a while since two-stroke ...

GM has filed a patent application for a two-stroke engine valve system. The patent application is tagged with patent number US 2025/0354528 A1 and was filed with the United States Patent and Trademark ...

Automotive giant General Motors has filed patents for a two-stroke engine of the type whose excess emissions took it off the road decades ago as a technology seen as having no future.The patent is for ...

Unless you're really into dirt bikes, you probably haven't touched a two-stroke engine in decades — if you ever have. These mechanically simple motors combine the four strokes we all know and love ...

It’s been a while since two-stroke engines went the way of the dinosaurs, with them being considered too inefficient, noisy, and emission-heavy for the 21st century. It is widely believed that the ...

The story of how Honda developed an oval-piston race engine that ultimately failed but still made history along the way.

Watch Carson Brown try to beat the Pastranaland lap record set on a 500cc 2-stroke Suzuki, aka the RMZilla, aboard a Stark ...

Andrew Scites bought a 1970's Sidewinder amphibious ATV and, after building a camper on top and fixing the engine, took it out and it worked ...

The cylinder bore is only half of the equation that determines an engine's displacement, or size. The other half of this ...

Our friends at Slavens Racing built their own YZ300X using a 2016 YZ250X as its starting point. And they gave us a chance to ...

There have been many reliable diesel engines over the years. Some are easy to work on, while others are a bit more challenging. The Ford 6.4-liter Power Stroke falls into the latter category, while ...