Getting oil in your intake tract is never a good thing. The worse thing is that an oil mist that gets sucked into your cylinders can cause the engine to detonate. You all know that detonation is the #1 killer of high performance engines. Oil has a significantly lower auto ignition point than gasoline so when it is introduced into the combustion chamber during the intake stroke it acts just like low octane fuel in your tank. Oil also causes sludge that gums up your intake manifold and fouls your ports, contributing to performance hampering valve deposits. Since our LT1 engine has a high 11.5:1 compression, it needs all the help it can get to avoid detonation on our crappy 91 octane California pump gas. To make sure as little oil mist gets into our intake manifold as possible, we installed Moroso’s air oil separator into our C7’s PCV crank vent to clean the engines blowby gasses before they are introduced into the intake manifold.
The Moroso air oil separator is a polished billet aluminum can that basically acts like a filter for blowby gasses. It is machined in two parts so it can be disassembled for cleaning. It is full of stainless steel mesh which is rolled like a jelly roll and acts like the filtering medium. When blowby is introduced into the can, the oil sticks to the mesh and any water vapor in the blowby gasses condenses on the mesh and flows to the bottom of the can. It’s very simple but effective.
The air oil separator kit comes with all the fittings, and hoses to do the installation.
A bracket specific to the C7 assures that this will be a clean and simple installation.
First we applied liquid teflon thread sealer to all of the fittings.