ok this is a idea i had after read a decent amount of posts and looking at my profrom valve covers. will this setup evenly balance the pressure between passanger side and driver sides of the engine (as far as crank pressure) also the stock pcv valve will be in place aswell. i have a issue with what parts to use in the place for the filter. i notice that most of you guys want to get vapor back into a fluid form. is there a filter setup on the market that can perform that task? if you see a issue speak up. if you think you have a better setup please feel free to post a picture or describe it. there has to be a happy middle ground for both sides of this debate to agree on.

oh yeah 1 more thing. with using 2 valve cover breathers how can that be counted as non-measured air? its not being burnt and not getting into the CC other than through the pcv valve back though the intake, correct? also how much vacuum is actually on that fresh air hose, to the passanger side valve cover? [IMG][/IMG]

 

No one is trying to "get the vapor back into fluid form".... they are trying to separate the entrained liquid droplets from the mixed air/HC vapor/combustion chamber blowby gasses. It would take significant cooling to condense the HC vapors to liquid form.

Your sketch is so small its impssible to read clearly, but it appears all you are doing is running the line from the throttle body to BOTH valve covers, rather than one. As long as all the air that flows to the valve covers comes from the throttle body, it has passed through the MAF sensor and has been measured.

Except at WOT, there is no vacuum on the port at the side of the throttle body. That port comes from between the blades, and IN FRONT of the blades, so it is not subject to intake manifold vacuum. At WOT, its hard to say what is happening at that point in the system, since the only possible vacuum would be equal to the pressure loss through the air filter, ducting, and MAF. That loss is partially offset by the velocity head of the fast-moving intake air hitting the flat wall between the throttle bores, where the pickup point is located.

The purpose of the line from the TB to the valve cover is to flow air TO the PCV system under low/moderate loads. Its mainly at WOT, where there is high blowby in the crankcase, and little or no vacuum in the intake manifold, that the crankcase pressure is relieved by the vapor flowing OUT of the valve cover, entraining oil droplets and putting them into the TB and eventually into the intake manifold.

 

i saw a few using catch cans mounted far away as they could from any heat but you explained it better than the other posts i read did.


you are correct , did you click on the picture? it gets bigger. as far as the non metered air i was refering to the dual valve cover breather setup some people have started to use. any thoughts on that?

yeah i was wondering how much if any cfm that factory setup was stealing from the intake volume. i guess not much huh. I wonder when the car is under WOT and spraying how much if any nitrous flows though that hose.if any since the crank case pressure is trying to push back up though the hose.
so would a type of check valve ,in line on that hose, ensure that if the crank case pressure started to push the oil back up the line it would be stopped by the valve closing? So in short is this idea worth following though with or not ? as always thanks for your answers fred