disabling pcv on street car?

RRE says you can disable the pcv on "cars that never see the street." is this because of emissions or because it will run differently???? i already disabled the pcv on my car and didnt even think of why they said it should only be done on a track car. i assumed it was because emissions. so my question is: is it cool to disable it on a street car in regards to performance/drivability rather than emissions.

PCV stands for Positive Crankcase Ventilation. NOW tell me, do you think it should be on there? It's there for a reason.

It only affects emissions, not performance. Positive crankcase pressure is vented by the side port on the valve cover, which goes to the intake on a stock car to keep it closed loop, again for emissions. I removed the PCV valve and installed a spare brake booster manifold fitting in its place (a 1/8 BSP to 3/8th hose barb fitting from mcmaster carr would be the same thing) venting the valve cover through 2 3/8th hoses. I still had trouble blowing out dipsticks at over 60 lbs/min airflow on one of my new motors.

PCV stands for Positive Crankcase Ventilation. NOW tell me, do you think it should be on there? It's there for a reason.

If I had retained the PCV valve it would have been even worse, since hte PCV closes under boost ;) So if venting the crankcase is a concern, the PCV is making things worse. NOW tell me if you still think its necessary. :)

You have to first understand how these systems work and why they are put in place before making decisions or giving advice about them.

If I had retained the PCV valve it would have been even worse, since hte PCV closes under boost ;) So if venting the crankcase is a concern, the PCV is making things worse. NOW tell me if you still think its necessary. :)

You have to first understand how these systems work and why they are put in place before making decisions or giving advice about them.


I understand how PCV works, i'll keep mine on thank you, it aint hurting performance enough for me to remove it.

it aint hurting performance enough for me to remove it.

And that will be the case for 99% of DSMers. But removing will not affect performance, just emissions. Which was what RRE was getting at on thier page.

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