PCV Valve, do I really need to run one? - Page 2 - Hot Rod Forum : Hotrodders Bulletin Board
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Old 02-27-2013, 08:42 PM
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Cheep valve covers with no baffle:

Valve covers angle a bit to the rear of the engine oil sprays and splashes off the rockers and hits the top of the valve covers runs back to the grommet runs down the sides of the rubber runs off in a stream or hangs in droplets on the end of the grommet and is sucked up by the pcv, the baffle acts like a dam around the grommet it stops splash and the oil running down the top of the valve cover to the rear of the engine before it hits the grommet and it runs dawn the side of the baffle and drops off Keeping the grommet fairly dry!! Blow by can push oil into the baffle and breathers or cheep set ups will be in the oil stream off the rockers like F.B. said! I doubt if you have excessive blow by! You just need valve covers with well designed baffles

Some valve covers have windage dams above the rockers and stop the running of oil along the top of the valve cover and direct the oil away! Cheep rocker covers just look good and even the baffles don't do the job they are intended to do!

Jester

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Old 02-27-2013, 10:30 PM
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have you considered circle track valve covers?
just an example


These Allstar Performance steel valve covers feature reinforced rails for improved gasket sealing and are constructed from durable steel. They have two 1 1/2 in. baffled breather tubes on one and a plain top with no holes on the other. The valve covers come in your choice of finishes, so you can choose what's best for your engine compartment.
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Old 02-27-2013, 11:11 PM
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I had an issue with warping and getting a good seal with my old steel covers. thats why I went with the aluminimum ones.
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Old 02-27-2013, 11:22 PM
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HAVE YOU CONSIDERED CIRCLE TRACK COVERS,rofllll? they are extra vented. they also offer plumbing into the exhaust system
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Old 02-27-2013, 11:36 PM
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Those baffles are not for a pcv and wont work in the respect of keeping oil out of the vacuum line! They are for installing extra breathers!

You need a baffle that insulates the grommet and wont let liquid oil get close to the vacuum draw but lets fumes get to the PCV like a bottom vented box between the rockers low enough to be out of the oil cast off but high enough to be off the head surface! with those low profile covers it would be hard! They sure are "PURDY" though You may have to hook up a catch can like mentioned earlier!

Jester
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Old 03-02-2013, 06:57 PM
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I also ordered some pcv specific baffled grommets just in case. I'm also putting together an oil catch can setup. That should help me see just how much oil is actually getting sucked into the intake and burnt onto my pistons.
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