i wanted to buy a cusco oil catch, but i didnt know exactly what the purpose of it was, i read the description but i still dont get it. Thanks

Brandon

sticky sticky

it catches the oil from crank case, which goes to intake in stock configuration.

so wat happen to the oil?

When the can gets full you drain it. The idea behind a PCV system is that oil vapors get burned up in the engine instead of just evaporating (yes, raw oil and fuel vapor is more polluting than exhaust fumes). A catch can, well, catches the oil before it passes thorugh your compressor, TB, and manifold so it can't gum things up.

The catch can uses interior volume and baffles to allow the oil vapors to condense and drop out of the air. It keeps internal parts of the intake path cleaner, but for high boost or re-mapped ignition advance applications, a non-diluted intake charge is less prone to detonation.

Federal-Mogul spiel on piston rings (http://www.federal-mogul.com/cda/content/front/0,2194,2442_897063_8682,00.html) and oil control (just a paragraph).

LS1 (Corvette engine) tech forum thread on vapor separators (http://www.ls1tech.com/forums/archive/index.php/t-131772).

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"…axles of evil…" - george w. bush

wow thanks guys, so it worth the purchase, it seems all cars should come with them

At one time, I thought they were just eye candy. I've since changed my mind about catch cans and plan on getting one in the future.

My only minor concern is being able to remove it easily for bi-annual smog checks in CA. Since the crankcase vapors are routed through the PCV hose, this is part of the emission controls. Even though it is not vented to atmosphere, the system has been altered.

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"…axles of evil…" - george w. bush

Is it just me or does it seem like Nic3krnnamja83 is post whoring?? because I've seem some pretty lame posts from him lately and for a "contributing member" he seems either insincere or pretty ****ing stuipd. And I mean no offence by that, but one would assume that having over 650 posts on here, ones head would not be lodged in his ass.

FWIW,
Joel

Well, i am just interested thats why i ask questions, and if you see most of my posts are in random thoughts and the such. So for someone with only 40 posts maybe u'll understand later on.

also if you meant no offence foul language was not in order. I'd appreciate it, not only for me, but to other i-club members also.

LOL, so you need two posts to respond to that huh? ok buddy.

(positive he'll respond to this as well, Trying to save up those posts for some guru status)
how cheesy

I really don't think it matters but.... Nic3krnnamja83 you can edit previous posts to ad thoughts. You really got ragged on though and i don't know why. The nerve!!!!


Good question though.

Originally posted by Wingless Wonder
My only minor concern is being able to remove it easily for bi-annual smog checks in CA. Since the crankcase vapors are routed through the PCV hose, this is part of the emission controls. Even though it is not vented to atmosphere, the system has been altered.

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"…axles of evil…" - george w. bush

I take it there are no oil catch cans that have C.A.R.B. exempt numbers so one would not have to remove the catch can every 2 years.....

Jason

if anything you posting for this is your way to post whore, you responded back. i asked a valid question which I was interested in, and obviously helps the I-club community, and yeah i should have edited but being as lazy as i am i didnt. So i guess by me helping myself, and it obvsiouly helped others to instill a thought about my topic giving them a whole new view. So I'd appreciate it, if you shut the **** up. And if you notice the posts here, people ask questions also to add and contribute to this. If you don't want to contribute to this, then we don't want your comments. I understand punkrocksailor that you need a role model and your dad beat you, but don't take it out on others. :D thanks.


No C.A.R.B numbers Wrxneffect, but that would be a good idea.

You're a post whore.

No, I'm not, you are.

No, you. Am not. Are too! Am not...

lol...

With that out of the way, I thought I'd pipe in with the results of my own catch can R&D.

There are two sources of the oily crap that coats your intake tract; the PCV hose and the crankcase breather hose. There are two crankcase breather lines (on wrx's); they both enter the metal tube in front of the intercooler on stock wrx's and come out as a single line which is plumbed into the intake tube.

From what I've read, some people have plumbed both the PCV hose and the crankcase breather hose into the same can. This is apparently a Bad Idea because the two lines see boost and vacuum at different times. Net result has been, in some cases, turbos that fill up with oil (search on NASIOC for catch cans in the 2.0 forum).

So there were three options that I could see. Get a catch can, and stick it in line with what I think is the worst source of oily vapor. Get two catch cans and eat Ramen noodles for a couple weeks and put one on each of the lines. Or make two of my own for way less $.

So I poked around online for some options for bottles. My requirements were 'small', 'cheap' and 'metal'. I settled on a pair of 11oz fuel bottles from: http://www.backcountry-equipment.com/stoves/msr_al_fuel-bottle.html

Went to the local hardware store and got an assortment of fittings and some epoxy. Drilled some holes in the bottles, screwed the fittings in and epoxied them for good measure. So for about $40 total (fittings weren't cheap) I have two new catch cans. Now I just need to get some fuel line to connect 'em up with and to build a bracket to hold 'em. And maybe to paint them.

*EDIT* Here's pics of one of them in their current state. http://www.fireswamp.net/~sjhiller/can.jpg

I'll probably try to finish the project this weekend; I can take some pictures when it's done if people are interested.

BTW- I started building these last month and forgot about them for a few weeks unitl... I installed a set of Perrin intercooler hoses last weekend and despite having only 4800 miles on my wrx the stock Y hose, throttlebody, and intercooler were *coated* in oil. Pretty disgusting.

lol, well i just didnt appreciate his commments

hey thats koo you want share any photos?

Does it really matter how many times the man posts? come on.
It doesn't affect me in one bit what your level in some internet forum is.

thank you ilivas...i appreciate that very much

Enough of the off topic blather fellas. Stick to the topic.

Couldn't you put on a crankcase breather filter on the crankcase beather line. Hmm....not sure if that makes any sense there. But it looks like a really small air intake. I've seen people do it on other cars. Or is it a no no on scoobies

You could use a crank case breather filter, but there are a few problems with them...

First is you're venting metered air to the atmosphere. Your ECU will have to figure out how to compensate for that.

Second is that venting that nasty air to atmosphere is sure to piss off the tree huggers out there.

Third, the vacuum that sometimes exists in the intake path may be important to helping suck the oil vapor out of the crankcase. You'll give that up if you go with a breather filter.

Fourth, they make an awful mess. At least the one I had on my last car did. Covered the whole engine bay with a fine layer of pretty skanky looking filth and made working under the hood way messier than it needed to be. Should've built a catch can for it.

The catch cans were pretty cheap and easy to make. And you get bonus karma points for being responsible about emissions.

In case anyone has an idea, I'm interested in suggestions for a material to use as a filtering medium to disrupt the air flow in the can to help condense the oil vapor. Steel wool is commonly mentioned, but I really don't want to risk having little bits of it break off over time and run through my turbo and motor.

It might be possible to put an filter medium inline with the breather hose. In the old days, carbureted engines used a plastic mesh filter inside of the baking pan air cleaner to filter out some of the oil vapos from going down the carb throat. When it gets saturated with oil it might be a restriction. The catch can takes quite before it's necessary to drain the thing, and in the meantime it allows unrestricted flow.

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"…axles of evil…" - george w. bush

I think Wingless Wonder is referring to something like what's shown here: http://www.tgilmore.com/talon/catchcan.html

I considered it, it should definitely work; it just won't hold very much and you'll need to keep a pretty close eye on it.

I figure that with a pair of 11oz cans I should definitely be able to just empty them when i change the oil and ignore them the rest of the time.

Actually, I did use a Fram fuel filter like the one in your link on an old Camaro. I can't remember how effective it was - too long ago. Can't beat the price, though!

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"…axles of evil…" - george w. bush

So in Cal catch can will have to be removed during smog checks?

Yes. Stupid, but at least it's not that hard. The reason is that it's considered tampering with emmissions controls.

Originally posted by BAN SUVS
Yes. Stupid, but at least it's not that hard. The reason is that it's considered tampering with emmissions controls.


Thanks Ass. :)

Originally posted by Silver Mojo
Thanks Ass. :)

You appear to have misread my post. Let me try again.




Yes a catch can would have to be removed for smog inspection. The rule is Stupid, but at least it's not that hard to remove and replace the catch can. The reason is that it's considered tampering with emmissions controls.

so would an Oil Catch can be a useful purchase? and are they any differences between.. Perrin, Cusco, and Greddy?

LOL. i guess i'm the ass. :)

I put one on my F-XT. The first time I took my IC off I noticed a fair amount of clean oil in my Y pipe :eek: Scared me the first time but I then found out that that isn't all that uncommon. So I installed a CC but only on the valve cover vents as per the Perrin directions, not the PCV or combining both (I don't like the idea of combining them myself) Anyway, after 4 months there is some oil in my CC and this weekend I installed a Si Y pipe and was happy to see that there was no oil in my Y pipe this time. Here is my install:

http://www.scoobymods.com/forums/showthread.php?s=&threadid=2769

I like this idea though as I think doing the PCV is a good idea too:

http://www.scoobymods.com/forums/showthread.php?s=&threadid=3346

What's the best way to clean out the intercooler? The last time I took it off, about 30,000 miles ago, there was oil. Now that I am installing the catch can I want a clean intercooler. Any suggestions?
Todd

It will clean itself out, or you can take it off, cap off the TB end, spray a degreaser like Simple Green in it and shake it up, then flush with water.

so would an Oil Catch can be a useful purchase? and are they any differences between.. Perrin, Cusco, and Greddy?

Nobody really did answer his question. I was just wondering the same thing. I am looking forward to getting one but the Perrin one looks like butt. If they're all the same then the cusco one is probably the best looking one.