If you want to know what kind of bike engine fits your needs, you need to know how a two-stroke differs from a four-stroke. Each of them has advantages and disadvantages. But you can't, or shouldn't, ...

Porsche has patented a revolutionary new engine with a six-stroke combustion cycle. Essentially, the engine is combining both a two-stroke and four-stroke engine into one, taking the individual ...

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, ...

Two-strokes are far simpler machines than four-stroke engines. They’re also lighter, easier to work on, and downright angrier, pumping out a lot more power per cubic centimeter of displacement, which ...

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

Two-stroke engines were phased out by tough pollution laws and fuel economy targets, but they could be making a comeback with KTM, Honda and boutique builders. KTM and Honda have both registered ...

Wayne Cunningham reviews cars and writes about automotive technology for CNET's Roadshow. Prior to the automotive beat, he covered spyware, Web building technologies, and computer hardware. He began ...

An Australian-designed clean two-stroke motorcycle engine could soon become a reality after attracting the interest of a Melbourne-based investor group. Sydney-Based inventor Basil van Rooyen says his ...

Ford began installing 7.3-liter diesel engines, developed in conjunction with Navistar International, in its trucks in 1988. That first version featured indirect fuel injection, or IDI, and laid the ...

This month we're out for torque, and nothing serves it up like huge cubes and a big arm. Stroking delivers both. Common Chevy 383 and Ford 347 combos have brought strokers to the masses, but there can ...