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Old 01-13-2009, 03:45 PM   #1
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pcv venting???

im run'n 11psi.... i have a pcv vent filter on my passenger valve cover. does it make a difference if i run a vent on the driver side valve cover also? is there a pressure difference in the block if i run 1 versus 2. if this question makes sense to anyone.....can u explain it to me and it's principles...
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Old 01-13-2009, 07:16 PM   #2
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Re: pcv venting???

Yes, it can make a difference to run two PCV's, one on each side. It can also help to put on a larger diameter hose on the PCV. You will also want to make sure the PCV screen is still there (under the PCV on the back of the intake) as it helps remove oil misting.

The problem is that the stock PCV line does not flow enough to allow proper ventilation when you start modifying the motor. When there is not enough flow, pressure in the crankcase increases and the oil begins to "mist" in the blow-by gases. This is evident by oil gathering in your intake and in the PCV hose. The more oil you are seeing, the higher the crankcase pressures are, and the more likely it is that you are about to blow your bottom end to pieces.

If you are just using a filter instead of an actual PCV, that's fine too... You're just releasing tons of hydrocarbons into the atmosphere. Just don't let Al Gore find out.
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Old 01-13-2009, 07:45 PM   #3
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Re: pcv venting???

Quote:
Originally Posted by bbunt302 View Post
Yes, it can make a difference to run two PCV's, one on each side. It can also help to put on a larger diameter hose on the PCV. You will also want to make sure the PCV screen is still there (under the PCV on the back of the intake) as it helps remove oil misting.

The problem is that the stock PCV line does not flow enough to allow proper ventilation when you start modifying the motor. When there is not enough flow, pressure in the crankcase increases and the oil begins to "mist" in the blow-by gases. This is evident by oil gathering in your intake and in the PCV hose. The more oil you are seeing, the higher the crankcase pressures are, and the more likely it is that you are about to blow your bottom end to pieces.

If you are just using a filter instead of an actual PCV, that's fine too... You're just releasing tons of hydrocarbons into the atmosphere. Just don't let Al Gore find out.
maybe i mis-stated. the pcv in the rear of the intake is ran as it should, and i actually check it frequently to make sure the valve moves freely. the vent that runs from the oil fill to the throttle body is wut i was really refering to. when i had it hooked up it spit oil outa the dipstick tube when u rev it. i blocked off the throttle body and ran a filter in place of the filler tube. i was wondering if it made a difference if i put one on the driver side valve cover...for more venting. also bbunt, dat filter draws a vacuum. i'm sure it suks in more o.v.c./h.c. than it spits out ...at least that orfice anyway...lol. i hope im maken more sense.
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