Originally Posted by jeckel7234
So what it exactly is this thing
An Oil Catch Can is exactly as the name states. It is installed into the PCV system of a vehicle. Being installed in a location that will be, between the valve cover/s and or crank case, and the intake manifold. Its sole purpose is to prevent the oil that is trapped within the vapors, which are being sucked from the engine block, from going into the combustion chambers.
Without a catch can, the oil will collect over time, on all components from the intake to the exhaust. All the way through the catalytic converters. It will gunk up on intake and exhaust valves. Intake runners and exhaust ports. Pistons and rings. Aid in lower compression as well as possibly causing knock. Clog or prematurely deteriorate catalytic converters. On a factory equipped turbo system, rob horsepower.
With a catch can, you will greatly slow down or prevent all of what I just mentioned because it catches the oil while the vapor goes through. Your engine will have better emissions because it won't be burning that oil. Your parts will last longer because you won't have that buildup on them. Over the life of the vehicle, it will run better and cleaner.
Performance engines and teams have catch cans. They are simple, and they work. Proof as in the pics above.