and exhaust. Combustion pushes the pistons down from the top of the cylinder. As engines need air to burn fuel, during intake, valves open up and allow ambient air to come in. When the piston reaches ...

All four phases occur within a single cycle of the rotor, rather than one at a time in a four-stroke piston engine. There is also no need for a minimum of two valves (intake and exhaust ...

and exhaust. Engines need air (namely oxygen) to burn fuel. During the intake stroke, valves open to allow the piston to act like a syringe as it moves downward, drawing in ambient air through the ...

It's springtime! Time to start working on your project car, learn a new wrenching skill, discover what everything is under the hood (and how it works), or just spruce up your daily driver.

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. This is living ...

Some engines, however, take advantage of squeezing in a few more parts where they can. One area where this is seen often is in extra intake and exhaust valves. Why does it matter if you have ...

Cylinder head valves normally will not just bend unless the engine has experienced some ... piece and pressing it up against either the intake or exhaust port to achieve an airtight seal.

If all engines were built with a straight shot ... RPM Oldsmobile head with a 30-degree back cut on both the intake and exhaust valves. The Olds' exhaust port did not respond to this modification ...

With LS engines, however ... That, they say, is the culprit behind failures of both intake and exhaust valves, not the valves themselves. For the purposes of this article, we'll be focusing ...

he takes a failed engine design and musters up the oomph to get it running. The whole build began with an idea for a different kind of intake and exhaust valve. [Meanwhile In the Garage] dreamed ...

Intake valves open and close to let the air-fuel mixture (or just air in some modern engines) enter the cylinders, and the exhaust valves allow exhaust gases to escape. Too much or too little ...