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Old 04-26-2012, 04:12 PM
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Valve Cover Breathers or Breather Tanks?

I am looking for some knowledge and/or opinions, and here is my situation:

My Big Block is getting close to reality, and I am buying a new Hilborn EFI setup to go with it-the problem is that you can't run a PCV with a Hilborn, so I have to come up with a way to vent the engine-

I am considering either dual Breather Tanks (mounted higher than the Valve Covers) or, a set of Moon Breathers mounted on the Valve Covers-I am wondering about clearance in the Valve Covers for the fittings though, and bought two of these "vacuum baffle with AN Fitting" (about half way down the page on the left):

http://www.starvacuumpumps.com/catalog/fittings_hoses/

Here are the Breathers I would use:

http://www.mooneyesusa.com/shop/prod...oducts_id=2470

I am concerned about the Valve Cover Breathers weaping (have heard many stories about this), so I am leaning towards the Breather Tanks-does anyone have an experience (or opinions) with this obscure subject?

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Old 04-27-2012, 08:08 PM
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My experience with valve cover breathers is that when the element inside of them gets saturated, They weep oil out on to your valve covers. I was using them on my 400 Trans Am in a set of Milodon valve covers. I converted it to breather tanks. Just my opinion, But I am way happier with the breather tanks.
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Old 04-27-2012, 08:52 PM
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What is a breather tank? Sorry, I just never head of them.
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Old 04-27-2012, 09:01 PM
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Look them up at jegs.com or summitt.com it will give you a better idea of what they are. They take the place of the push in style of breather vents in your valve covers.
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Old 04-28-2012, 07:17 AM
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My experience with the Moon breathers is drool and an oil saturated engine compartment - like ALL vehicles before the PCV devices. But they do look nice.

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Old 04-30-2012, 09:15 AM
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I was away from the Computer this weekend, but thank you to all who responded (you too Dave! )

Here is what a Breather Tank looks like:

http://www.summitracing.com/parts/MOR-85500/

You all responded in the way that I was afrad this might go (and thanks for sharing your experiences), so, on to Breahther Tanks, as I cannot think of any other way to do it-
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