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-   -   oil catch can install (http://www.mitsustyle.com/forums/showthread.php?t=25510)

travail 01-28-2010 06:36 AM

oil catch can install
 
What is the best way to install one on a evo.
http://i259.photobucket.com/albums/h...ille/newwe.jpg

123abc 01-28-2010 07:42 AM

Re: oil catch can install
 
Is it not the same as DSM's?

travail 01-28-2010 07:47 AM

Re: oil catch can install
 
Quote:

Originally Posted by 123abc (Post 321884)
Is it not the same as DSM's?

I have never installed one so I don't know.

123abc 01-28-2010 08:26 AM

Re: oil catch can install
 
The way I did mine deletes the pcv valve. Just screw a nipple into it's place, run a hose from that and the other valve cover breather port to the catch can. Then have a seperate hose come in through the top of your can and go to your intake pipe.


I'm on a blow-through setup though, so I don't know how this would apply to you.

travail 01-28-2010 08:42 AM

Re: oil catch can install
 
so like this
http://i259.photobucket.com/albums/h...le/0000000.jpg

mlomker 01-28-2010 09:10 AM

Re: oil catch can install
 
Interesting. On the X the stock line runs from the valve cover to the intake. When I install my AMS intake (which doesn't come with the inlet) I was just going to run the line to the catch can. I didn't think there was a need for an outlet on the catch can. Need to research that.

Kracka 01-28-2010 11:22 AM

Re: oil catch can install
 
Ideally you're going to want 2 catch-cans for a proper install and to maintain vacuum inside your crankcase.

VC breather ---> MAP crankcase vent (optional but recomended) ---> catch can ---> intake pipe

AND

stock PCV ---> catch can ---> MAP crankcase vent ---> intake manifold

http://www.maperformance.com/map-cra...acuum-kit.html

travail 01-28-2010 11:40 AM

Re: oil catch can install
 
Quote:

Originally Posted by Kracka (Post 321909)
Ideally you're going to want 2 catch-cans for a proper install and to maintain vacuum inside your crankcase.

VC breather ---> MAP crankcase vent (optional but recomended) ---> catch can ---> intake pipe

AND

stock PCV ---> catch can ---> MAP crankcase vent ---> intake manifold

http://www.maperformance.com/map-cra...acuum-kit.html

You really need two of them.

Kracka 01-28-2010 11:42 AM

Re: oil catch can install
 
If you want to route both the breather and PCV to a can then yes, you need 2. If you do just one can though then pick which of the above two is more important to you and go that route. I personally have 1 can setup between the VC breather and intake pipe.

123abc 01-28-2010 02:08 PM

Re: oil catch can install
 
Quote:

Originally Posted by travail (Post 321889)

Yes except you have the line going to the intake manifold, not where the pcv valve use to screw into the vc.

Kracka 01-28-2010 02:09 PM

Re: oil catch can install
 
Doing that, without any check-valves, is a terrible idea since you'll be pressurizing the catch-can AND crankcase during on-boost conditions!

123abc 01-28-2010 02:12 PM

Re: oil catch can install
 
Quote:

Originally Posted by Kracka (Post 321930)
Doing that, without any check-valves, is a terrible idea since you'll be pressurizing the catch-can AND crankcase during on-boost conditions!

There's no pressure in there, only vaccum. I have the 3rd tube going to the intake pipe, before the turbo with an inline filter.

Kracka 01-28-2010 02:24 PM

Re: oil catch can install
 
How is there no pressure when you have a line run directly from the intake manifold?

123abc 01-28-2010 02:26 PM

Re: oil catch can install
 
Quote:

Originally Posted by Kracka (Post 321934)
How is there no pressure when you have a line run directly from the intake manifold?

I meant to say he did it wrong, that line gets ran to the VC. I keep thinking DSM's where the pcv valve goes to the vc. Obviously that won't work hooked up to the intake manifold.

Kracka 01-28-2010 02:28 PM

Re: oil catch can install
 
Evos and DSMs have their VC breathers and PCV valves setup in the same way, just in different locations.

t-revzr 01-28-2010 05:44 PM

Re: oil catch can install
 
Quote:

Originally Posted by Kracka (Post 321912)
If you want to route both the breather and PCV to a can then yes, you need 2. If you do just one can though then pick which of the above two is more important to you and go that route. I personally have 1 can setup between the VC breather and intake pipe.

Do you have a pic of it under your hood?

asshanson 01-28-2010 05:53 PM

Re: oil catch can install
 
Why not have both the VC outlets go into the intake pipe? The PCV going into the intake mani is pressurized under boost so it does nothing. If they both go into the intake pipe the turbo will be sucking air out from both VC locations at all times. Granted this will probably look messier, but oh well.

goodhart 01-28-2010 06:06 PM

Re: oil catch can install
 
Quote:

Originally Posted by asshanson (Post 321957)
Why not have both the VC outlets go into the intake pipe? The PCV going into the intake mani is pressurized under boost so it does nothing. If they both go into the intake pipe the turbo will be sucking air out from both VC locations at all times. Granted this will probably look messier, but oh well.

And all that blow by going into the turbo? no thanks.

123abc 01-28-2010 06:12 PM

Re: oil catch can install
 
http://www.mitsustyle.com/photopost/.../breather1.jpg

The 2 red hoses go to my catch can. Then the green hose goes to my intake tube. No pressure, only vacuum.

Quote:

And all that blow by going into the turbo? no thanks.

Thats the point of a catch can dude, to catch the shit and suck out vapors. It's a better way of doing the same thing the factory did in my opinion.

asshanson 01-28-2010 06:34 PM

Re: oil catch can install
 
Quote:

Originally Posted by goodhart (Post 321960)
And all that blow by going into the turbo? no thanks.

Quote:

Originally Posted by 123abc (Post 321962)
Thats the point of a catch can dude, to catch the shit and suck out vapors. It's a better way of doing the same thing the factory did in my opinion.

This. Just run both VC vents into a single catch can and then to the intake pipe.


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