NEED HELP, PCV ON BLOW THROUGH SYSTEM

[barnstormer]

HAVING TROUBLE FINDING INFO ABOUT MY V8 CHEVY TURBO PLANS, NEED TO KNOW WHAT TO DO ABOUT THE PCV SYSTEM, I BELIEVE I CAN PUT A ONE WAY VALVE IN LINE TO LET THE PCV WORK, AND THEN UNDER BOOST, IT WILL SHUT DOWN AS NOT TO PRESSURIZE THE CRANKCASE WITH BOOST AIR. THE ONLY QUESTION IS, IS THERE A WAY TO HAVE VACUUM TO HELP RING SEAL IN CRANKCASE UNDER BOOST CONDITION AS VACUUM IS NON EXISTANT FROM INTAKE MANIFOLD WHEN TURBO IS SPOOLED UP, IDEAS?

[Gaslight]

There are a couple of different ways to do this. The way I like the best is to run the PCV line off the valve cover to a catch can. From the other port on the catch can run a line to just in front of the turbo. Run a factory PCV valve in the valve cover.

Jake

[DaDoc]

Well the PCV is by itself already a 1Way Valve(unless its Fkd).
& in any normal circumstance (Boosted or N/A ) its opperation is a bit ass-about-face.

Under Manifold Vacuum its open (Low to no Engine Load)
Under No Vacuum or Preasure its closed (Med/High Engine Load, Boost)

Yeah, But Doesn't the engine create more Crank Case Preasure the harder it revs & under more Load?
Well, Ummm.... yes, yes it does.

AnyWay..

As GASLIGHT said Run an Oil Catch Can from the PCV, But In my opinon you should connect the other Line from the Catch Can to the Original Provision for the PCV.
+ADD an extra Baffled Vent to the Rocker Cover on the opposite Bank, Plumbed up anywhere between the Air Filter & Suction side of ya Turbo, Alternativly you could just stick a Mini Filter on top of ya Rocker Cover & vent it to Atmosphere.
You could do as the NasCars,ETC..
They Plumb up their PCV to Draw Tube's situated after the last Collector on each Exhaust Header.
The concept is to Draw out & burn Crank Case fumes in the heat produced in the Exhaust. Higher the RPM=Higher the Vacuum at the Draw Tube.
Quite affective & More efficient than a conventional system.
BUT!!
I understand, It could be allegal &
The EPA (Environmental Protection Authority)
Will Kick yo Ass all over town if they find that sort of system on a street car. (that maybe because the average street cars Exhaust temp. doesn't get high enough to burn exccess Crank Case Fumes- thus exiting as exccess pollution. )

[czecho]

DaDoc is my hero

DO that!!

[boosted95civic]

i use 2 audi/vw venturis to create a vacuum under boost. using both of the factory pcv locations. one on the valve cover the other in the back of the block. the one off of the back of my has a t-fitting going into the intake manifold with a check valve so the crankcase still sees vacuum under motor vacuum. both venturis are routed to a catch can. i can get u pictures or make a diagram if u need more help.