Pcv? Vc Breather? Neither?

FordRacing302

5 Year Member

Oct 1, 2005

384

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59

Cleveland, TN

Apr 13, 2014

#1

• Apr 13, 2014

• #1

So I'm installing my Trick Flow heads and cam and notice that my already existing TFS lower intake has a plug where the PCV should be (I've been driving the car like this for 3 years). Right now the oil filler neck nipple is the only form of ventilation that this motor has. Can I simply run a valve cover breather or do I need to install a pcv valve. Or is the oil filler neck nipple sufficient?

 

Noobz347

Stangnet Facilities Maint Tech... Er... Janitor

Admin Dude

Jan 4, 1985

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Apr 13, 2014

#2

• Apr 13, 2014

• #2

I am not a fan of breathers on cars where inducted air is metered.

I would run valve cover ports to an inlet vacuum source through an oil separator and in-line check valve.

 

89oem

Mustang Master

Dec 18, 2013

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Apr 13, 2014

#3

• Apr 13, 2014

• #3

its all metered air after MAF .. here is a link to an article TomR over on the corral... this is on his SC motor but concept applies

http://www.w8ji.com/pcv_system.htm

 

Noobz347

Stangnet Facilities Maint Tech... Er... Janitor

Admin Dude

Jan 4, 1985

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Apr 13, 2014

#4

• Apr 13, 2014

• #4

A big piece of what cuts down on picking up oil is the velocity of air that enters the line.

Larger ports/ lines and a larger number of ports that are ventilating crank case gasses, significantly reduces the amount of atomized oil that you pick up.