I think its pcv and no you dont NEED one but its recomended. It lets air travel throught the crank case or something.
PCV...Positive Crankcase Ventilation...Yes you need it. It allowes the crancase to breathe so it remains at or just below atmospheric pressure. Pressure builds in the crankcase from combustion gasses that escape past the piston rings and valve seals,causing it to pressurize. This pressure can cause the piston rings to unseat allowing oil consumption as well as allowing the engine to pump oil out of any weak seal/gasket making quite a mess among other things.
no. you will want a breather on one valve cover and the pcv on the other. this will create a fresh air flow through the crank case. that i will give you all the benifits listed above
You can if you use 2...One on each cover. You will spend time cleaning oil slime off the rocker covers though...ring seal will suffer as well and you may have an engine that leaks oil all the time.
The PCV valve is necessary to the health of your engine and it removes unwanted vapors (water, fuel) from the crankcase. The lower pressure (just slightly) keeps the compression rings against the bottom of the lands which improves power and economy but allows them to seal better.
Yes you need a pcv, and also make sure its hooked up to a port on the intake.. Found out the hard way, the people that built my motor hooked it to the air filter cover and for two years I thought I got a bad engine build.. Oil seeped out everywhere, what a mess.... Thanks to the folks here I learned the right way to use the pcv....
PCV was one of the first and one of the best emission controls on the engine! In the 60's, some ole farts had trouble dealing with PCV till they understood how much better it was than the downdraft system,,, or they passed on. Best to keep it and very easy to service
