Oil Catch Can - R33

[govich]

Guys, FYI, i've been told (by UAS) that connecting the can as immediately above is illegal, as you have to block off the link between the head and intake manifold as well as head and inlet piping. The correct and legal way to have a catch can setup is as posted by NSA11N, with the OEM pipe linking the two rocker covers in tact. You need to have a pipe leading from the top of the right rocker cover to your catch can, and the other pipe from the catch can to the OEM piping that leads back to the intake.

This ensures the system is 'closed loop', and is the way i have mine set up. It works fine.

edit: Here's a photo of what i mean: http://members.optusnet.com.au/gbozic/cc.jpg

Edited June 14, 2007 by govich

[NSA11N]

Yeah, see, i was right "Arkhaeon"... In the future, please be a little more curtious...

Thank you

[Abo Bob]

Guys, FYI, i've been told (by UAS) that connecting the can as immediately above is illegal, as you have to block off the link between the head and intake manifold as well as head and inlet piping. The correct and legal way to have a catch can setup is as posted by NSA11N, with the OEM pipe linking the two rocker covers in tact. You need to have a pipe leading from the top of the right rocker cover to your catch can, and the other pipe from the catch can to the OEM piping that leads back to the intake.

This ensures the system is 'closed loop', and is the way i have mine set up. It works fine.

edit: Here's a photo of what i mean: http://members.optusnet.com.au/gbozic/cc.jpg

That's right.

[NSA11N]

Thanks Adam for your help

[Fry_33]

I'm glad some people started to actually be of some help. As stated above by govich to stay legal the catch can setup needs to remain a closed system. The other system does look pretty good though.

If you just put one hose on the left cam cover and run that to the catch can and then return the other one to the right hand side of the cover it will not do much at all. It needs to be like Govhichs setup otherwise its a waste of time.

The PCV valve is open at idle and then closes once you hit boost, it is a simple one way valve. Off boost the engine sucks air from the cam cover through the PCV valve and then into the manifold. On boost the manifold is pressurised and wants to push air back into the cam cover and the PCV valve stops it. If you don't want any unfiltered Crank case gases getting into your engine you probably need to block the pipe that goes from the cam cover to the manifold. I am not sure on the legality of this but the gases will still pass through the catch can and then go into the inlet if setup like govich.

Even if you don't block the PCV valve section then the govich setup will filter the gases and help keep your turbo, intercooler, and pipes a little cleaner.

Read though the catch can threads to get more info and to see where a few more people have put theirs.

Good Luck

[Arkhaeon]

shouldn't my hosing work like this, this way it stops the oil from passing through the turbo??

I apologise for going over the top on the reply, after seeing a different interpretation of your second post. I read it as you saying you were blocking the oil lines to your turbo (and your MSpaint pic didnt help clarify your statement at all).

Obviously Sam took the same meaning from your post as I did:

NSA11N, restricting Oil form your turbo would be bad.

Aside from that, I still stand by my claim that you should have searched first, as its been covered a zillion times (and once again, Sam agreed).

To make a catch can setup legal, you simply run the lines from the engine to the catchcan, and then the return line back into your intake. Oil vapour doesnt harm your turbo at all, however it will coat your AFM if you return it before it (Giving false readings and thus screwing your ratios). The factory return is between the AFM and turbo.

I havent seen anyone deal with the crank cases' vapour.. On the SR20s, there is a factory catchcan placed between the crank case and rocker cover breathers (with the rocker covers' breather being a T piece; one to the catchcan, one to the intake).

When you change to a tuned length manifold, it interferes with the stock catchcan, so you just run a pipe between the crank case and rocker cover breather, and then from the rocker cover breather to the aftermarket catchcan. From there most people just drop a pipe down to atmosphere (legally you should then return it to the intake).

To Pauly33GTS-t: Please show references to where you attained that definition of a fuckhead. By what grounds do you see it just to insult someone for insulting someone? You are quite clearly "the breathing definition of a hypocrite".

I could continue to say you've made yourself out to be quite stupid, but everyone here seems to take more offense to the term "stupid" than to "fuckhead".

[nizmo_freek]

Sorry guys, didnt realise my setup would be illegal in australia, here in N.Z there is nothing wrong with my setup, many people use it, you could always get it setup that it return the fumes back into the intake, it would be very easy to do that.