The Drive

Getting This Ancient Sleeve-Valve Engine to Run After 60 Years Was a Labor of Love

I’m not sure if any engine built today will still be salvageable 100 years from now. Not to sound like a grump, but so much relies on computers that will surely be obsolete by then. And let’s not get ...
autoweek

1914 Stearns-Knight Six: A Pinnacle of Sleeve-Valve Power

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 ...
insider.si.edu

Continental XR-1740-2, Sleeve Valve, Radial 14 Engine

Click to open image viewer. CC0 Usage Conditions ApplyClick for more information. In 1925, Continental, a successful manufacturer of automotive engines, purchased the rights for a Burt-McCollum single ...
autoweek

1929 Stearns-Knight Model J 8-90 Sedan: Grand Design

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 ...
insider.si.edu

Continental R-794S, Sleeve Valve, Radial 7 Engine

Continental, a successful manufacturer of automotive engines, purchased the rights for a Burt-McCollum single-sleeve valve engine design in 1925. Believing this technology might replace poppet valves ...