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skj283 · 01-02-2010, 06:17 PM

the advantage of breathers or header evac over pcv is you arent feeding blowby back into the combustion process. header evac over breathers is that the header evac is supposed to pull vacuum on the crankcase up to 3" is what i've heard, and improves ring seal. dont know how much it really does but thats the theory.

01-02-2010, 06:17 PM	#2
skj283 Junior Member Join Date: Nov 2009 Posts: 11 Likes: 0 Liked 0 Times in 0 Posts	Re: My ultra cost effecient evac sysyem the advantage of breathers or header evac over pcv is you arent feeding blowby back into the combustion process. header evac over breathers is that the header evac is supposed to pull vacuum on the crankcase up to 3" is what i've heard, and improves ring seal. dont know how much it really does but thats the theory. Last edited by skj283; 01-02-2010 at 06:30 PM.