Valve cover breathers vs. PVC?

[snakebittexan]

Is there any advantage, disadvantage to running breather filters instead of a PVC?

[Gaz64]

PVC is a plastic used for plumbing, PCV is Positive Crankcase Ventilation.

Now each to their own, but PCV is beneficial for a street car iF DONE PROPERLY.

Each system has their place. You won't see PCV on a race engine.

A poorly baffled rocker cover with a hose going to the carb base plate is bad.

A better system has an air oil separator allowing any oil in the air to collect in the container prior to the AIR ONLY going to the intake.

Pulling fresh air into the crankcase and out via a breather hose helps keep hydrocarbon acids from building up in the oil.

Running breathers only is smelly, messy and bad for the environment.

Google PCV systems.

[RET_COP]

I've done it both ways. Now I just run the PCV with a restrictor inline and a Moroso oil separator to keep all or any oil out of the intake. I have reached a performance and maintenance compromise I can live with.