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 ...

Inline-fours offer smoother operation and reliability; three-cylinders are lighter and more efficient.

More than 90% of global freight is transported by over 33,000 merchant marine vessels powered by two stroke crosshead engines as their main source of propulsion; the two-stroke diesel engine has been ...

Add Yahoo as a preferred source to see more of our stories on Google. The bore of a cylinder (along with the stroke and the number of cylinders in the engine) is what determines displacement.

One of the most significant contributions in the history of propulsion technology came from a 19th-century engineer named Rudolf Diesel. While his idea was patented in the 1890s, it wouldn't be until ...

Pontiac's 151-cubic-inch 92-hp 4-cylinder production engine began in 1978 as the "Iron Duke." It was offered as the base engine in Pontiac Astras, Sunbirds, and other GM compacts like the Chevrolet ...