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Oil Catch Can Mounting And Roughting

Guest 40th-edition

By Guest 40th-edition,
in Engines & Forced Induction

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H@ME Mentor

H@ME

Posted
Posted

Okay guys i just finished putting the hoses on the can and all i think is well so far, there are pics below for feedback, i think all is well with the installation. Apart from i have one more inlet/outlet at the bottom of the can which can just be seen in one of the pics, should i just block this inlet/outlet? Also is the position ok where it is, i know it is close to the turbo heat shields etc. :wave:

Think shouldn't cause a fire should it??

post-36645-1195002014_thumb.jpg

post-36645-1195002039_thumb.jpg

post-36645-1195002077_thumb.jpg

post-36645-1195002126_thumb.jpg

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H@ME Mentor

H@ME

Posted
Posted

It is a very simple mod to do, where u located, i'll do it for you if ur close by, anyhow is it cheap? depends on where u get ur CC from, what brand it is and what it is made out of. installation can be slightly tricky but i'd say it a begginers/medium mod.

R338OY Veteran

R338OY

Posted
Posted

Wanna fly down to Sydney and put one in? hehehe

I'd be confident enough to install one.

How much for one *average* price?

Plus i'd go for the steel hoses (don't like the whole garden hose look on some of the installs).

Dose Pipe Sutututu Grand Master

Dose Pipe Sutututu

Posted
Posted
Okay guys i just finished putting the hoses on the can and all i think is well so far, there are pics below for feedback, i think all is well with the installation. Apart from i have one more inlet/outlet at the bottom of the can which can just be seen in one of the pics, should i just block this inlet/outlet? Also is the position ok where it is, i know it is close to the turbo heat shields etc. :rofl:

Think shouldn't cause a fire should it??

block the bottom hole, or else your motor will be receiving air that hasn't passed the AFM.. not safe...

otherwise your installation is correct, to be even more padentic you could route in the PCV line as well... so during idle your cam cover fumes will be collected by the catch can..

I'll snap up a photo of my setup on the weekend when i get my car back, its currently getting resprayed :) can't wait!

Dose Pipe Sutututu Grand Master

Dose Pipe Sutututu

Posted
Posted

post-22311-1195010208_thumb.jpg

if you look at:

- Yellow line & T-Piece those lines are sucked into the oil catch can

- Blue line & T-Piece are sucked out of the catch can.

With this setup when the car is:

- Idling the blue line will be sucking from the catch can, which is drawing the fumes from the cam covers.

- On boost, the blue line will be closed off by the PCV, and the intake will be drawing air from the catch can which is drawing fumes from the cam covers.

100% plumb back solution..!

Dose Pipe Sutututu Grand Master

Dose Pipe Sutututu

Posted
Posted
Iv read through the thread and im still finding it a bit confusing. Which way is the most efficient way to set up an oil catch can?

Most efficient is what I posted up, so on idle & on throttle the oil vapours in the cam cover are passed through the catch can.

In a 50% plumb back solution, only on throttle is the vapours passed through the catch can, and on idle the oil vapours will travel into the plenum via the PCV.

Basti Grand Master

Basti

Posted
Posted
post-22311-1195010208_thumb.jpg

if you look at:

- Yellow line & T-Piece those lines are sucked into the oil catch can

- Blue line & T-Piece are sucked out of the catch can.

With this setup when the car is:

- Idling the blue line will be sucking from the catch can, which is drawing the fumes from the cam covers.

- On boost, the blue line will be closed off by the PCV, and the intake will be drawing air from the catch can which is drawing fumes from the cam covers.

100% plumb back solution..!

mate that is a big boost leak on a rb25 engine. everytime your plenum is pressurised, it will be pushing air thru the blue pipe back into the can and out the pipe to the intake. you need to relocate the pcv valve to after the can. ie: l+r cam covers tee-d into the inlet of can, can, outlet to intakepipe + outlet to plenum, pcv, plenum

Dose Pipe Sutututu Grand Master

Dose Pipe Sutututu

Posted
Posted

Sorry I have a RB20DET, the PCV is actually located on the Plenum, I forgot that the RB25DET have their PCVs located on the cam cover.

Solution: get a generic PCV and run it just before the plenum.

  • 2 weeks later...
Dose Pipe Sutututu Grand Master

Dose Pipe Sutututu

Posted
Posted

post-22311-1196204186_thumb.jpg

this is how I hooked mine up, but please note its a RB20, i.e. the PCV is actually on the plenum, RB25 guys should go buy an inline PCV from a local spares shop.

  • 1 year later...
Neejay Explorer

Neejay

Posted
Posted
post-22311-1196204186_thumb.jpg

this is how I hooked mine up, but please note its a RB20, i.e. the PCV is actually on the plenum, RB25 guys should go buy an inline PCV from a local spares shop.

Is there anything wrong with this setup? So I'd just have to buy ANY inline pcv valve?

Sorry, I know it's a year old post, but this is the best way (I think) I've seen a catch can setup. I'm trying not to have to run 2 catch cans, because I want to filter out the pcv valve vapors AND the valve cover vapors.

SirRacer Experienced

SirRacer

Posted
Posted

i ripped mine out and replaced it with a blanking plug. the hoses from the rocker covers run into a catch can. ive seen some pretty serious rb drag cars running similar setups so im sure its not 100% essential to have the pcv operational in that manner.

If it is, id be keen to hear about it?

  • 2 months later...
gotRICE? Veteran

gotRICE?

Posted
Posted
is my catch can set up correctly?

Yup, but in that setup you can block the PCV off too.

I have mine set up like yours but with the PCV blocked off.

MetalcastHigh.jpg

You cant see it because i painted the PCV bung black. Removed the valve and replaced it with an alloy bung. And of course a bung in the PCV-Intake Mani hose.

  • 10 months later...
disco_potatoe Rising Star

disco_potatoe

Posted
Posted

can some one get a pic or draw one for me so that i can install a catch can on my car please..... could someone pm me the pic or drawing....

also could someone please suggest what size hose i should use and where to get it from ? im located in melbourne....

  • 4 years later...
Adz2332 Grand Master

Adz2332

Posted
Posted

Long story short i can run the two pipes off of the rockers to a catch can and then use a fliter on top and thats it? let it vent to the atmosphere and no other lines are needed to be run?

Can anyone recommend someone to custom make one and that knows how to baffle properly?

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