American publisher Charles Knight was not at all impressed with his new 1901 Knox ‘gasoline runabout’. Like some other cars of the era, its four-stroke engine relied on a single valve to permit both ...

Most modern gasoline and diesel-powered engines found in the cars and trucks seen on today's roadways rely on the four-cycle-engine principles developed in the late 1800s by Nikolaus Otto, Gottlieb ...

SLEEVE-VALVE ENGINES MAY NOW BE obscure automotive history, but they were once popular powerplants worldwide and could be found in the English Daimler and Belgian Minerva, among others. The best-known ...

One hundred was a lot of horsepower in 1914, even for an 8.0-liter engine in a low-production luxury car. Yet 100 was the figure claimed for the remarkable Stearns-Knight Six, of which at least 350 ...

Bore and Stroke: 146 mm (5.75 in.) x 165 mm (6.5 in.) In 1926 Bristol began studies to integrate the Burt-McCollum sleeve valve concept into selected new engine designs. The sleeve valve, which moved ...

The internal combustion engine, despite being a century-and-a-half old, is still an impressive marvel of engineering. There are several variations of engine design that have been experimented with ...

James Vaughn’s three favorite letters related to his five vintage cars — including a 1929 Willys-Knight with an unusual “sleeve valve” engine — are “N.O.S.” In car restorer’s parlance, those three ...