I fitted my valvecovers with some valve cover breathers and got rid of the PCV system. I noticed today that there is smoke comming out of them. I did paint them but it isn't the paint cooking. I pulled them off both sides and there is smoke comming out of the valve cover holes for the breathers. I havn't checked my oil or coolant, but there is no smoke out of the exhaust.

 

You should keep the PCV for a daily driver. It keeps water and gas out of your oil by burning off the vapors before they make it back to liquid state.

 

The PCV system is definitely one emmission control system that improves performance, not hindering it.

I always run them on anything less than a full race engine. On those I run the crankcase evacuation system.

On my Olds engines I even run two PCV valves and replace the oil fill cap with a big breather. The PCV system can actually help ring seal from the crankcase side if it is properly sized.

Put it back!!

 

Looks like I have something I have to do tommorrow afternoon. Luckily I keep most parts that I take off.