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Old Mar 19, 2018 | 01:51 PM
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Default Catch can Questions

Hi everyone,

I am looking at purchasing an Elite Engineering oil catch can for my 2004 C5 and would like to know if I should purchase the check valve and the Clean-Side Oil Separator too?

I've seen a few pictures where people are only running the oil catch can and nothing else. Just trying to see if the Clean-side separator and check valve are a must on the LS motors.

Cheers,
Alex
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Old Mar 19, 2018 | 03:41 PM
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They have good, better, best for sale.

I have the good (polished) on my 01z and it's been fine. Simple to install, I'd get it again.
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Old Mar 19, 2018 | 05:26 PM
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Same here I installed the "good" plus the check valve.
They make a great product.
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Old Mar 19, 2018 | 08:09 PM
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Thanks for the input. So far I was looking at the black single inlet single outlet version.
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Old Mar 20, 2018 | 12:27 AM
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I have their standard catch can on mine - it works great and is easy to install. Elite makes a quality product.
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Old Mar 20, 2018 | 11:53 AM
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I have one and love it. However I think the Mighty Mouse one is better.
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Old Mar 21, 2018 | 07:05 AM
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Obviously not a C5, but I have a Mighty Mouse on mine and the quality is very good.


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Old Mar 21, 2018 | 02:20 PM
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Thank you for the input. I did check out the MM and noticed on big difference between the Mighty Mouse and Elite is that Mighty Mouse has a filter and is getting air from the outside, where Elite does not have this and is more of a closed system (for the lack of a better term).

Guess I will have to do some investigating as to why one has an open element while the other does not.

Cheers,
Alex
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Old Mar 21, 2018 | 03:06 PM
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Originally Posted by spllbnd2
Thank you for the input. I did check out the MM and noticed on big difference between the Mighty Mouse and Elite is that Mighty Mouse has a filter and is getting air from the outside, where Elite does not have this and is more of a closed system (for the lack of a better term).

Guess I will have to do some investigating as to why one has an open element while the other does not.
A catch can typically routes oil vapors back into the intake, which over time can coat the intake slightly with residual oil contained in the vapors (this is what your PCV does that a catch can is in theory supposed to reduce, except a catch can will reduce it to a much lower level) whereas a vented can lid will vent some of that vapor back into the atmosphere. The biggest immediately draw-back I can think of that will occur with a vented can will be 1) you'll likely smell vapors more as they'll come in through the HVAC and 2) you'll have another item to service down the road in changing out the filter.

Regardless per the posts above plenty of people run basic circulated style catch cans with no ill results.
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Old Mar 21, 2018 | 03:37 PM
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Thank you. Yep exactly the way a PCV system should work in theory. I worked as an auto tech for 10 years before going into the aerospace as an aircraft test technician.

I think I will be going the route of Elite just due to the fact that I am not sending more pollutants back into the atmosphere with the open element style. Not that there's anything wrong with those. Also I think running a PCV system the way it was designed and just adding a catch can in the loop seems better in my opinion.

Thank you again for the input on this. Very much appreciated and helpful.

Alex
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Old Mar 21, 2018 | 11:12 PM
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I also have the Elite Engineering standard version.

As others have said, easy install; works/looks great.

You should be happy with it.

Last edited by FrankLP; Mar 21, 2018 at 11:13 PM.
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Old Mar 22, 2018 | 11:02 PM
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What is the check valve and where does it go in the catch can installation?
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Old Mar 23, 2018 | 02:11 PM
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Originally Posted by WetMountainMan
What is the check valve and where does it go in the catch can installation?
Elite Engineering shows that it is used on the "Exit Port" of the oil catch can.

I am not sure how many people use that and/or the Clean Side Oil Separator. Maybe those who are using the Elite products can chime in on if they are using the check valve and'or the Clean side separator.

Cheers,
Alex
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Old Mar 27, 2018 | 11:17 PM
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Is the PCV valve still used in line with the catch can?
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