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...ve guide]]. In most applications a pressure differential helps to seal the valve and in some applications also open it. ...[Schrader valve]]s used on tires are examples of poppet valves. The Presta valve has no spring and relies on a pressure differential for opening and closing

...of 4.5 liters. Merosi came up with a four [[cylinder]], 16 valve head with valve angle of 90 degrees. The war halted its development, but in 1922 Merosi aga ...gine to defeat the Mercedes and Auto Unions in the late 1930s cost him his job at Alfa Romeo. Jano went on to [[Lancia]], where again he engineered some o

This job would be simple, were air and gasoline both ideal fluids; in practice, howe ...can be rotated so that it (almost) completely blocks the flow of air. This valve controls the flow of air through the carburetor throat and thus the quantit

*4 [[Poppet valve|valves]] per cylinder ...eader ([[Jason Kay]]) - English singer, owns a black MC12 (post sale paint job)

...cylinder charging, squirting fuel into the cylinder only after the intake valve has closed and compression has begun. Gasoline/petrol engines differ from ...ing [[model aircraft]]—though the conversion is a highly specialised job—one not without its dangers.

...irector [[Guy Hamilton]], who directed ''Goldfinger''. Hamilton turned the job down claiming that he had done all he could with the Bond character, althou ...en-circuit]]: two very small air cylinders end-to-end joined by a [[demand valve]]. After the film's release there was some confusion as to whether a "rebre

...s with higher performance racing machines with varying overhead cam, multi-valve configurations and cylinder designs. A 4-valve version of the Carcano engine was created in the early 1990s and is current

...a race, the [[1966 Italian Grand Prix]] at [[Monza]], with an improved 36-valve engine. ...tement confirming that Stepney and Coughlan approached the team regarding "job opportunities" in June 2007. Since the revelation of Coughlan's involvement