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Unread 01-20-2010, 07:29 PM   #1
00JGC00
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Oil Catch Can Results (with pic)

So after three weeks of being hooked up to the PCV and breather lines, here's all the crap that the catch can gathered...



When I dumped it out it seemed like mostly water, but with how much condensation the 4.7's cough up, I'm glad to get rid of it.

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Unread 01-21-2010, 01:35 AM   #2
Greengc4x4
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Can you explain how it works/what it does?
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Unread 01-21-2010, 01:42 AM   #3
BLACKzj52
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Roger, alot of the dudes on Speedfreaks have them. basically iirc its almost like a fuel filter, just with oil i think. i could be wrong. iv never quite taken the time to find out, but if i had to take a guess that would be it.
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Unread 01-21-2010, 04:25 AM   #4
ratmonkey
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Its an air drier for a compressor. As the air is drawn over the cup the solids/water/oil drops out instead of gumming up your intake manifold. The 5.2 pulls a crap ton of oil through the pcv.
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Unread 01-21-2010, 09:06 AM   #5
torchd
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I have an oil catch can on my 2002 Trans Am. Basically what it does is it collects any oil that blows by the PCV before it enters your intake.
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Unread 01-21-2010, 09:53 AM   #6
00JGC00
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Quote:
Originally Posted by torchd View Post
I have an oil catch can on my 2002 Trans Am. Basically what it does is it collects any oil that blows by the PCV before it enters your intake.
Bingo. There are more "advanced" ones out there that have steel or glass balls inside the container which are supposed to help deposits condensate better. The one I have is just an empty container with an in spout and an out spout at the top. I was shocked that it filled up that fast. I can't believe how much garbage gets pumped through the throttle. I had the breather line and the PCV line T'd into this one can, but I didn't really like the possibility that the PCV could flow down the breather tube (unlikely, but still). So last night I hooked the can pictured above exclusively to the PCV system and will probably get something smaller for the crank breather. I'm curious to see which coughs up more gunk anyway.

If you want to poke around more about how these work, google:

oil catch can
crankcase breather filter
enchanced pcv filter

crankcase breather filters are cheap and common, but are illegal in most states. They just vent everything out into the atmosphere and I've heard some guys complain that it mists oil all over their engines. I figure if you get a sealed filter you can keep the gunk out of your engine, and still be good for the environment all at the same time.
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Unread 01-21-2010, 10:23 AM   #7
torchd
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does anyone have a pic with their set up on a 4.0????
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Unread 01-21-2010, 02:08 PM   #8
BigE3
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You can make one out of a can of chicken broth. A drill, some hose and glue.

Noterain the chicken broth by drilling a small hole in the can 1st.
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Unread 09-04-2012, 08:43 PM   #9
Easywolf32
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Can anyone put up a link to a catch can I could buy that fits a 4.7 2006 wk jeep grand Cherokee? Thx
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