oil catch can vs oil separator
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Old March 25th, 2010, 12:42 AM   #1
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oil catch can vs oil separator


so i just got O/R x pipe and i blowing out blue smoke so i thought i'd get me a catch can but then i was re-searching and found an oil separator for a little cheaper. Whats the difference between the two. And also dose it matter what side of the engine it goes on?

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Old March 25th, 2010, 03:02 AM   #2
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They are two different names for the same thing. Basically it's just some sort of baffle and a container to catcth the sludge.
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Old March 25th, 2010, 03:17 AM   #3
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It has to go on the drivers side. You would hardly get any oil out of the passanger side PCV tube because all it does is let fresh air into the crankcase. The driverside is the one that carries crankcase vapor into the intake, and would be the one with the oil buildup.
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Old March 25th, 2010, 08:19 AM   #4
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Originally Posted by UrbanRedneck View Post
It has to go on the drivers side. You would hardly get any oil out of the passanger side PCV tube because all it does is let fresh air into the crankcase. The driverside is the one that carries crankcase vapor into the intake, and would be the one with the oil buildup.
Just to clarify this a bit, if you have a sealed PCV system the vapor will come out your driver's side. If you breath your motor, then the vapors will actually come out the passenger side as I found out after installing a breather catch can on my driver's side and I put the oil cap breather on the passenger side and it is the one that's releasing the vapors. I don't know if that will change back if I remove the internal PCV valve in the driver's side valve cover though.
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Old March 25th, 2010, 11:04 AM   #5
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Originally Posted by UrbanRedneck View Post
It has to go on the drivers side. You would hardly get any oil out of the passanger side PCV tube because all it does is let fresh air into the crankcase. The driverside is the one that carries crankcase vapor into the intake, and would be the one with the oil buildup.
+1 What he said.



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Old March 25th, 2010, 11:30 AM   #6
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Originally Posted by dysan View Post
Just to clarify this a bit, if you have a sealed PCV system the vapor will come out your driver's side. If you breath your motor, then the vapors will actually come out the passenger side as I found out after installing a breather catch can on my driver's side and I put the oil cap breather on the passenger side and it is the one that's releasing the vapors. I don't know if that will change back if I remove the internal PCV valve in the driver's side valve cover though.
If you remove the actual PCV valve you should get equal flow out of each side.
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Old March 25th, 2010, 12:06 PM   #7
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That's what I want to shoot for. I just need to grow a pair and take off my valve cover and remove it. :-)
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Old March 25th, 2010, 12:34 PM   #8
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Originally Posted by DiMora View Post
+1 What he said.



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I did and thank you, I have learned now the ways of the catch can and am ready to study under ur knowledge master.......... Reps
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Old March 25th, 2010, 08:17 PM   #9
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I prefer to use the best of both.

I use a catch can hooked to both sides with a breather on top of the can.
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Old March 25th, 2010, 09:54 PM   #10
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Originally Posted by Chevykiller View Post
I prefer to use the best of both.

I use a catch can hooked to both sides with a breather on top of the can.
^^^thats the balls best setup. vent to the atmosphere and catch the oil neatly.

i've had the steeda separator, some oil still went thru.
i've also had the moroso catch can, that worked well. just didnt like the way it looked.
now i run the triple breathers on both sides. small amount of blow by every few weeks. it helps to clean the breathers often.
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Old March 26th, 2010, 09:49 AM   #11
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I prefer the breather catch can method myself and cap off the intake completely.
With catch cans, you still get blow-by into your intake...specifically if you are FI.





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Old March 26th, 2010, 09:56 AM   #12
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Did you take out the built in PCV valve from the driver's side valve cover? I'm debating on whether or not that's necessary to do or not.
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Old March 26th, 2010, 10:03 AM   #13
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Originally Posted by dysan View Post
Did you take out the built in PCV valve from the driver's side valve cover? I'm debating on whether or not that's necessary to do or not.
I didn't... With my setup, I don't get oil... I get this (mostly on the passenger side):





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Old March 26th, 2010, 10:19 AM   #14
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Alright, that is one helluva setup, AutoXRacer, thanks for posting the pics. Next weekend's project right there.

Still have to order the dang oil filler breather. Did you get yours from Central Florida Motorsports?
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Old March 26th, 2010, 10:22 AM   #15
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Yeah...that condensation is the one thing that I don't like having the breather set-up, besides the wonderful oil vapor smell :-).
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Old March 26th, 2010, 10:31 AM   #16
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Originally Posted by EfylSetaf View Post
Alright, that is one helluva setup, AutoXRacer, thanks for posting the pics. Next weekend's project right there.

Still have to order the dang oil filler breather. Did you get yours from Central Florida Motorsports?
Yes, its the only place I know of that sells it...

Originally Posted by dysan View Post
Yeah...that condensation is the one thing that I don't like having the breather set-up, besides the wonderful oil vapor smell :-).
That was my big fear too... I can smell it very lightly; not bad at all, although I haven't used my A/C or heater yet...
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Old March 26th, 2010, 10:36 AM   #17
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You can get the oil cap breather right from Metco, that's where i got mine from.

Edit: Here's the link to the product... http://www.metcomotorsports.com/prod...BR0005&cat=102
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Last edited by dysan; March 26th, 2010 at 10:37 AM. Reason: added link
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Old March 26th, 2010, 10:45 AM   #18
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Thanks Dysan, works out to the same as CFM, was hoping I could get Carquest to order it and be able to skip the shipping. I never realized I was such a cheap bastard, ah well.
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Old March 26th, 2010, 10:58 AM   #19
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Are they exactly the same...?

My CFM version is baffled so that no oil is sprayed out of (or onto) the filter...



Here is their description:
CFM Performance now makes it easy to vent the crankcase on your 2005-08 Mustang GT with our new billet valve cover baffled breather kit. This kit is a direct replacement for your factory oil fill cap and allows unwanted crankcase pressure to exit. The proprietary internal baffle substantially reduces oil particle travel without affecting air flow. The filter element is washable and has a chrome top for great looks. The pre-oiled cotton fiber traps dirt particles without restricting air flow. Although this kit was designed for use in racing applications, it works and looks great on any engine compartment.
The Metco one also seems to be taller.



Description:
This valve cover breather assembly replaces the original oil fill tube found on the factory passenger side valve cover. The base is CNC-machined from billet aluminum for precise fit, and the included silicone gasket is specially designed to prevent oil seepage at the base of the breather. The filter base is microfinished for surface protection and good looks, and is easily hand-polished to a mirror-like appearance. The removable filter element is a high-quality reusable unit from S & B Filters, and it is securely retained in the filter base by a specially machined retention groove at the top of the base.

The purpose of this valve cover breather is to vent unwanted accumulation of pressure in the crankcase, and to provide maximum circulation of ambient air in the crankcase to reduce oil temperatures. The installation of this breather will contribute to increased engine oil life and reduce the possibility of failed engine seals resulting from excessive crankcase pressure. This breather will reduce the effectiveness of the vehicle's PCV system, and it is not emissions-legal.

Note 1: Due to inadequate hood clearance, this Metco Motorsports Valve Cover Breather cannot be used on a 2003-2004 Mustang Cobra or the 2007 & newer Shelby GT500. Please see the Metco Motorsports MBR0013, listed elsewhere in this section.

Note 2: This breather stand is also available with a male #10AN connection at the top instead of the provision for the breather element. This configuration is designed for use in a custom crankcase evacuation system or for use with a vacuum pump. Please see Metco Motorsports PN MBR0004-10AN, listed elsewhere in this section.
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Old March 26th, 2010, 11:12 AM   #20
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They are different. I didn't know the CFM one was baffled or I would have gotten that one. Mine does not have a baffle so the filter does get oiled up.

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