Internal combustion engines typically have low efficiency, with modern gasoline engines around 35% and diesel engines ...

All the more so thanks to Kawasaki’s new bikes. For the first time in more than 20 years, Team Green has taken its two-stroke ...

A look back at Yamaha's massive two-stroke engine changed the motorcycle world forever.

Kawasaki hasn't made a two-stroke bike larger than 250cc since 2004, but that changes now.

Two-stroke engines have steadily fallen out of favor over the last 50 years or so. While they sport great power-to-weight ratios and are often much simpler mechanically than their four-stroke ...

After more than two decades without a new large-displacement two-stroke, Kawasaki is bringing the category back in a big way.

Porsche was issued a patent for its six-stroke combustion engine on October 22, 2024. The company describes the new engine as having a "working cycle" of three complete crankshaft revolutions with two ...

Editor’s Note: This article previously appeared in a different format as part of The Atlantic’s Notes section, retired in 2021. In response to the item immediately below, which kicked off this Thread, ...

Making a new engine while the world’s rushing to switch to electric vehicles only? Mazda said, “why not?” There’s a new innovator in town and it wants you to pay attention. Mazda’s SkyActiv-X engines ...

Never underestimate the power of a well-stocked junk bin. Along with a TIG welder and mechanical ingenuity bordering on genius-level, all of which come to bear on this fridge compressor to four-stroke ...

Almost all gasoline engines, whether they're efficient-yet-less-refined four-cylinders, high-horsepower V6s, or growly and torque-rich V8s, use much the same process to create power. The "Otto cycle" ...

A brutal engine torture test is reigniting debate around Ford’s legendary diesel trucks. From contaminated fuel to extreme abuse, the aging 7.3-liter Power Stroke refused to quit, reminding ...