When Tom Nelson recently posted pictures and a video on Instagram of this unique engine he’d just finished, we knew we had to stop by for a closer look. A cursory glance at those unmistakable valve ...

Acura refreshes its Integra A-Spec manual for 2026, but do the subtle updates help it keep pace with quicker rivals?

Discover how Mazda’s 13B-MSP Renesis evolved, its tech breakthroughs, and the issues that defined it, plus how it connects to today’s new single-rotor 8C engine.

Gearheads and faithful Jalopnik readers already know the basics of an engine's bore and stroke, but for those that might be new here, let's dip our toes in the shallow end. An engine's bore refers to ...

If we ran a poll on Visordown tomorrow asking if people prefer two or four-stroke engines, the ringy-dingy two-smoke would win it by a mile. And it almost seems as though engineering companies get it, ...

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 ...