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LS2 vally cover?

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Old Oct 25, 2006 | 08:47 PM
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Default LS2 vally cover?

It has the line coming out of it, i take it that this is another type of pcv system? If so can i just block off my valve cover pcv system and just use the vally cover as the vent and rout that to a catch can?
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Old Oct 25, 2006 | 10:14 PM
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Originally Posted by speedyss
It has the line coming out of it, i take it that this is another type of pcv system? If so can i just block off my valve cover pcv system and just use the vally cover as the vent and rout that to a catch can?
i do not see any reason why you couldnt. I have two 10an male fitting welded to my valley cover used for an evac system
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Old Oct 26, 2006 | 12:27 PM
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Originally Posted by Formulized94
i do not see any reason why you couldnt. I have two 10an male fitting welded to my valley cover used for an evac system
I wanted to do somthing like that but everyone says not to unless you are runing and open headered car, is that what you have? Or are you just runing this on your street car?
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Old Oct 26, 2006 | 08:02 PM
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Originally Posted by speedyss
I wanted to do somthing like that but everyone says not to unless you are runing and open headered car, is that what you have? Or are you just runing this on your street car?

i am running it on a mild 370/t56 94 trans am, i drive it about 150 miles a week
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Old Oct 26, 2006 | 08:29 PM
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I am going to be running two breathers on each valve cover...

Are you going to hook the valley cover upto the intake so it is under vacuum?

If not you may want to watch out for excessive crankcase pressure... That is a small hole on the valley cover...

The holes on my valve covers will be 1 1/4" each...

Then again I am running an extremely agreesive setup with open headers
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Old Oct 28, 2006 | 07:06 AM
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If you blow into the valley cover tube you will find it is maybe~~50% restricted by design.
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Old Oct 28, 2006 | 08:51 AM
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I blocked off all the stock holes in the valve covers and put a breather in place of the oil cap.
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Old Oct 28, 2006 | 09:02 AM
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You need to get air into the crank case. If you just have the vent from the valley cover it will suck oil past the seals and rings.
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Old Oct 28, 2006 | 02:02 PM
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I thought the idea was to get air out of the crank case? and have good ventalation?
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Old Oct 28, 2006 | 02:04 PM
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Air comes out of the crank case...
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Old Oct 28, 2006 | 04:31 PM
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Originally Posted by AppleMac
Air comes out of the crank case...

Where do you think the air comes from.... Do you think there is a little air fairy in the making air? You can't just have a point to "suck" air out of the crankcase. Ventilation requires air going in AND out.

Sorry, I've been talking with SStrokerAce alot lately.

Last edited by WKMCD; Oct 28, 2006 at 04:47 PM.
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Old Oct 28, 2006 | 05:10 PM
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Originally Posted by WKMCD
Where do you think the air comes from.... Do you think there is a little air fairy in the making air? You can't just have a point to "suck" air out of the crankcase. Ventilation requires air going in AND out.

Sorry, I've been talking with SStrokerAce alot lately.
I think you get plenty of air in thru the intake and there is enough internal leakage to provide pressure unless evacuated. If you sealed up the PCV and valley you would blow the dipstick out first.
Check with SStroker on that.
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Old Oct 28, 2006 | 06:10 PM
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Originally Posted by See5
I think you get plenty of air in thru the intake and there is enough internal leakage to provide pressure unless evacuated. If you sealed up the PCV and valley you would blow the dipstick out first.
Check with SStroker on that.

Make yourself happy.
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Old Oct 28, 2006 | 07:10 PM
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Originally Posted by WKMCD
Make yourself happy.
Not happy, because it is a probem.
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Old Oct 28, 2006 | 08:16 PM
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Originally Posted by WKMCD
Where do you think the air comes from.... Do you think there is a little air fairy in the making air? You can't just have a point to "suck" air out of the crankcase. Ventilation requires air going in AND out.

Sorry, I've been talking with SStrokerAce alot lately.
Ever feel a breather? I feel pressure not a vacuum...
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