The runner entry view shows how the center of flow pressure is not always in the geometric center of a port or runner. And now, before we dig into the ground-level aspects of intake manifold ...

Therefore, there are only certain intake manifold features that can be evaluated on an airflow bench, although these include mapping of flow pressure profiles (pressure distributions) and specific ...

If that occurs, your engine oil pressure may drop ... until you discover oil residue somewhere, like the intake manifold. While a small amount of oil in the intake manifold can be normal, an ...

The Mercedes-Benz 300SL engine. In a car's intake manifold, air enters at atmospheric pressure, rushing toward the intake valves at tremendous speed. But when the intake valves close completely ...

There is no question that the DOHC 5.0L Coyote engine has taken Mustang performance to new levels, and the spotlight, but if you have a Three-Valve 4.6L, there are still a lot of performance ...

Last month we showed what gains were available from three aftermarket Three-Valve intake manifolds in naturally aspirated trim. This month we're going to try the same three intakes, only now we'll ...

This allows even slight crankcase pressure to combine with intake manifold vacuum to push oil from the lifter valley directly into the intake ports. Even if you do not see blue oil smoke on ...

A typical catch can plugs into a hose running from the top of your engine's crankcase to the intake manifold. This hose relieves pressure in the crankcase generated by blow-by (when pressure ...

The manifold absolute pressure sensor reads the amount of pressure or vacuum (also called “engine load”) in the intake manifold, where outside air is divvied up in proper amounts and ...

Variable-length intake runners ... to take advantage of pressure waves created by the intake air charge bouncing off the closed intake valve and inside the manifold. It's a fascinating system ...