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Custom Oil Catch Can

racegtst

By racegtst,
in Western Australia

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racegtst Community Regular

racegtst

Posted
Posted

I thought i would would share a few pics of my custom oil catch can. It is 2.5L.

My mate knocked it up for me fairly quickly so it has not been polished yet.

Excuse the engine (it needs a degrease) as it has been in the garage for about 12 months not really going anywhere.

Happy for comments.

post-13913-1265029436_thumb.jpg post-13913-1265029503_thumb.jpg post-13913-1265029550_thumb.jpg post-13913-1265029603_thumb.jpg

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https://www.sau.com.au/forums/topic/306457-custom-oil-catch-can/
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racegtst Community Regular

racegtst

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  • Author
Posted (edited)
just letting you guys know but having the breather on it make it illegal. nice job by the way

this is true but I never said it was legal!

This car is orientated to track duties and very rarely sees street use, usually only going from home to tuner and back so not a real drama for me.

Edited by racegtst
Pal Veteran

Pal

Posted
Posted

is there a line from the front of the turbo to the catch can or am i seeing it right (pic 3) your still going from the turbo to the top of the rocker cover. i may be wrong but all i can see is two lines from the rocker cover to the catch can. The line going to rocker cover from the turbo needs to be plumbed into the catch can as well to get a vacuum in the catch can to pull the gasses from the rocker covers.

Rowdy Collaborator

Rowdy

Posted
Posted

yeah... i dont think its really doing much, in fact its doing nothing for your right rocker cover, and the vacuum from the turbo is probably sucking the fumes from the left cover through the catch can anyway. is there a reason you didnt block off the hose from your rocker cover to the turbs?

it looks the goods anyway (Y)

ahh 33 s2 Mentor

ahh 33 s2

Posted
Posted

looks the good mate, got a few questions tho

is ur mate interested in making more of a different design, spex would be supplied

is it baffled

r u running a drain back to sump

is there any reason its on the passenger side, most cars run in on drivers side (something to do with the crank pressure helping it drain back)

cheers

dan

bubba Grand Master

bubba

Posted
Posted (edited)

The way the OP has it set up would be a huge vaccum leak and also would be sucking oily fumes straight from the top of the head into the intake, rendering the catchcan useless.

You can run your catch can atmo. if you block the return in the intake pipe and also block the PCV from the plenum to head. Then you just run your two breathers to the catch can and vent to atmo.

If you want to plumb your catchcan inline, then T the two breathers into one and run it to one port on the can, run the other port to the intake. It's best to fill the can with steel wool as in this situation it's acting as an oil/air seperator (even better to have a baffle in there too so the fumes have to go through the steel wool before exiting).

The atmo. setup above, is acting as a "catch" can and is more for high hp track cars that might be prone to breathing, you also don't want oil fumes in your intake when you run a lot of boost and timing.

Edited by bubba
racegtst Community Regular

racegtst

Posted
  • Author
Posted

Just been to the mechanic to ask his opinion.

He said that it is working fine and is doing it's job as a catch can. He also said that if i block off the PVC pipe then i will have idle and running issues etc.

Rowdy - the reason is that the mechanic advised this was the way to set it up. It is there to catch oil if i have a big issue and to allow the engine to breath when at the track.

ahh 33 s2 - my mate will be happy to buiild to your specs. if you are interested you can PM me your details and i will pass onto him.

I am not a mechanic so have to trust what the workshop says as they do a fair bit of work for drift, track and road cars predominatley Jap imports.

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