General Motors may not be building a bike engine, but this two-stroke concept has real potential for motorcycle engineering.

It’s been a while since two-stroke engines went the way of the dinosaurs, with them being considered too inefficient, noisy, ...

GM has filed a patent application for a two-stroke engine valve system, which could enhance efficiency and control compared ...

GM modern two-stroke tech aims to revive lightweight, efficient combustion engines with a new patent using electronically ...

If we ran a poll on Visordown tomorrow asking if people prefer two or four-stroke engines, the ringy-dingy two-smoke would ...

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-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 ...

Note: It’s purely MotoGP. Now that we have that clarified, here’s the big breaking news: Yamaha recently declared that it was ...

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 ...

Renault doesn't sell any vehicles in the U.S.—unless you consider some Nissans that share a global platform—but there's a reason this tiny diesel from France is interesting: it gives us an idea of how ...

Two-stroke/four-stroke hybrid. The name is so totally nonsensical that neither Jacquot-who brought it up after eavesdropping on some motorcycle geeks-nor I had any idea what it was. He guessed it was ...

March 26, 2008 Ricardo and a consortium of automotive partners today announced the completion of an advanced prototype research programme based on the highly innovative 2/4SIGHT engine concept. This ...