I know this has been discussed before, but i couldn't find any definete answers. Do you need a PCV valve? a freind just wants to run 2 breathers and no PCV, i am sure people have gotten away with both setups but which is the correct way and why? thanks

PCV sure makes for a more pleasant cruise.

Just breathers is for race cars

You'll keep your engine bay a lot cleaner by using a PCV valve. For a street car, there is really no downside to running a PCV valve.

Mike

I have breather bottles on mine, during normal city speeds 25-55 the bay stays clean, if I get above 70 for awhile I can get oil misting, but I also have stopped this by having the 10AN fitting and line connected to the covers pointing up more toward the carb, so the oil has a tougher time going up hill. Now if I could keep the gas from going down the carb so fast.

The best way to do away with the PCV swet-up is to use the older motor's stock road draft tube, intake with a front oil fill tube and has the boss in the valley for the oil mist filter canister!!

But you are going backwards from an environmental air pollution thing standpoint, imho..

I remember sitting in traffic behind a car that was worn out and the draft tube was steaming like a steam engine, stinking up the air with smog producing sh-t!!

pdq67

Please keep in mind that the $3 PCV valve eliminated 80+ percent of automotive air pollution. It took thousands of dollars worth of computers, sensors, EFI and catalysts to get rid of the next 18 percent. Do the world a favor, keep the PCV.