As an example, on a steel connecting rod engine with a piston-to-head clearance of 0.035 inch, the minimum P-V clearance for either the intake or exhaust valve could be 0.045-inch.

A simple slide valve is used, allowing steam to flow to one side of the piston and the other alternately, as driven by an arm coming off the flywheel attached to the engine’s output shaft.

This means it is a reciprocating rotary engine. Yeah, weird stuff. The camshaft is also centrally located in the crankcase and still runs at 50-percent crankshaft speed but only actuates one valve ...

Trouble with the exhaust-valves of the Type-J aircooled cylinder caused an investigation to be made of valve-cooling and of valve and guide wear. A temperature of 1300 deg. fahr, invariably caused ...

As the engine heats up, the spring inside the thermostat expands and pulls the valve open. Electric chokes use the vehicle's 12-volt power to control the thermostat.

To convert nonadjustable, pedestal-style Ford V-8 valvetrains to a fully adjustable valvetrain with screw-in studs and guide plates, machine as shown in this diagram, and the table that follows it.

A few days ago, we published a report highlighting the valve lifter issues some General Motors customers were experiencing in certain vehicles equipped with either its 5.3L V8 L84 gasoline engine ...

Mohammed Yusuf Ali, Thomas Sanders, Mikhail A. Ejakov, Reda Adimi, Alexander Boucke, Jochen Lang, Gunter Knoll, Effect of Valvetrain Components Misalignment on Valve and Guide Interactions in ...