ok im blaming you guys formaking me want to do this, so if my g/f complains im pointing her in this direction lol.

i want to do it before winter but i want to do a custom one that will mount to the fire wall.

but.... this is a big butt (lol) how do the work? like can some one find an article that explains the different parts of everything so i have a better understanding of how to make one instead of "the instructions say so!" i dont understand the flow part of it, like, the baffle and junk... im lost. need halp

catch can is used to clean oil from the recirculated air from the valve cover.
It would be installed inline between the valve cover and the intake tube connected to the throttle body.

In our car's case its the same one, some people on this board have stuck a breather filter on.

Valve cover(usually PCV) --> catchcan --> intake tube
On some catchcans there will be a third connection on the bottom that is to allow the "caught" oil to drain back into the block. If not, then the catch can will need to be emptied every so often. Usually the same time you perform an oil change.

here is a write on a vw forum. But it is very similar on most cars. 2 hoses, and a possible drain hose, and mounting.

http://forums.vwvortex.com/zerothread?id=3248273

This post has been edited by fonque: Sep 8 2008, 11:46 PM

thanks man. i looked at it before i made this post but i didnt understand how the baffle worked

any body even thought about it?

I plan on doing it soon.
Had some unexpected bills this month.
But I think it is a worthwhile investment and the addition on it will look sweet too. B) :thumbsup:

sorry im not too familair with a oil catch can. does it increase HP? and exactly how does it work?

it can increase HP, by allowing the intake tube to create a vacuum under the valve cover. This reduces friction for the valve train thereby adding a few ponies.

But the catch can's real purpose is the same as its name, its used to catch oil from the air being directed back to the intake. This way the air is clean, and prevents building up of grime inside the intake tube, throttle body, and intake plenum.

The air flows into the catchcan from the top, gravity pulls the oil droplets from the valve cover down, and the air flows back out the top of the catch can to the intake.

i see...

i see now, got any links to where i can get the catch cans?

ebay, search: oil catch cans

Not to bump, but does anyone know which size oil catch can to get? the sizes I've seen are 15mm and 9mm.

http://www.theoldone.com/sc/type-r/b18c5-prototype.html


there's some good pictures of an oil catch can I found while working on ideas for my cold air box