all boosted engines will leak a bit of pressure past the rings and have blowby, so a catch can is worthwhile.

Cheers Steve

would someone mind to give me a quick rundown on what exactly this tank is for????

Do the new WRX and Evos have a catch tank?

a catch can goes between your pcv valve and your inlet to stop and catch any oil vapours which may clog up your inlet passage and or intercooler it will also help eliminate detination in both high compresion and turbo motors i tink i got that
right he he

No RB20....its designed to catch oil that surges in an engine when the car is experiencing high cornering loads. it is connected to your rocker cover breather and if any oil surges, then the catch tank will hold the oil to be appropriately drained later rather than it spilling onto the road or even worse te racetrack....
it is mandatory for all cars which race in circuit racing whether N/A or boosted.
I made mine out of an old 7series BMW power steering reservoir tank turned upside down so I can drain it and also it is still able to let the engine rocker breathe....

can someone tell me what hoses i would connect to the catch can, i think i might make one tomorrow... im on holidays got nothin else to do. hopefully someone can tell me before tomorrow, would i just connect the rocker cover hose, or the crank case one as well?

first time i have heard it explained like that
i have read several diferent articals on oil catch cans and they have all said the same thing that their main pourpes is to help prevent detination in turbo cars by taking any un burnt oil vapours away from the inlet

it should be conected to the hose between your rocker cover and your air filter
and they should have baffles and or steal wool in side to catch the vapours

thanks rb20, heres a link for people who might be thinking about makign their own, looks pretty simple to me, ill give it a go tomorrow and tell everyone how it goes.
http://www.turbophile.com/turbophile.html?technical/useful_information.html&1

Hi Steveo
I can't tell how it's hooked up in your photo. Can you explain to me how it drains back and where and what part you bought to get it to work?
Regards
Matty

I just had one made too. I can't wait to fit it to my engine. Because of my custom made manifold, I don't have a pcv, and I dont want oil and whatever else getting spat through the supercharger via the air cleaner niple.

i want to experience corner loads that cause so much oil to pool in the rocker cover that it blasts out the breather!

now i'm pondering what the other end of the pcv hooks to... benn so long i can't recall..