In this video, we examine the functioning of four-stroke and two-stroke engines, highlighting their differences along with ...

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 ...

In dirt bike racing, two-stroke and four-stroke engines have their own unique advantages. What's the difference, and which ...

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 ...

Anyone who appreciates simplicity of design and efficiency of operation has to like small two-stroke-cycle engines that power construction tools such as cut-off saws, rammers and breakers. Producing ...

The race to launch the first commercial ammonia-fueled engines marked a key milestone, reports marine engine designer WinGD. The first two-stroke engines built from the company’s designs were tested ...

In 2001 Mary Jane Ortega, then mayor of San Fernando City in the Philippines, knew her city was choking to death. The cause? Air pollution, specifically that from two- and three-wheeled vehicles ...