Jump to content
SAU Community

Custom Oil Catch Can

racegtst

By racegtst,
in Western Australia

 Share

Recommended Posts

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

Link to comment
https://www.sau.com.au/forums/topic/306457-custom-oil-catch-can/
Share on other sites
racegtst Community Regular

racegtst

Posted
  • 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.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • tylink720
      "Cheap" bolt on turbo on RB25DET NEO

      By tylink720 · Posted

      @Kapr Haha yeah thats the one. I missed that you had a built up engine, I wouldn't want to run it on there either then. It was good in my situation just to replace the original turbo on a stock engine. @MBS206Yep definitely not a replacement for anything name brand
    • Kapr
      "Cheap" bolt on turbo on RB25DET NEO

      By Kapr · Posted

      You are selling this? I have never bought something from marketplace...i dont know if i trust that enough. And the price is little bit "too" good...
    • Watermouse
      "Cheap" bolt on turbo on RB25DET NEO

      By Watermouse · Posted

      https://www.facebook.com/share/19kSVAc4tc/?mibextid=wwXIfr
    • Kinkstaah
      Airbox for +T

      By Kinkstaah · Posted

      It would be well worth deciding where you want to go and what you care about. Reliability of everything in a 34 drops MASSIVELY above the 300kw mark. Keeping everything going great at beyond that value will cost ten times the $. Clutches become shit, gearboxes (and engines/bottom ends) become consumable, traction becomes crap. The good news is looking legalish/actually being legal is slighly under the 300kw mark. I would make the assumption you want to ditch the stock plenum too and want to go a front facing unit of some description due to the cross flow. Do the bends on a return flow hurt? Not really. A couple of bends do make a difference but not nearly as much in a forced induction situation. Add 1psi of boost to overcome it. Nobody has ever gone and done a track session monitoring IAT then done a different session on a different intercooler and monitored IAT to see the difference here. All of the benefits here are likely in the "My engine is a forged consumable that I drive once a year because it needs a rebuild every year which takes 9 months of the year to complete" territory. It would be well worth deciding where you want to go and what you care about with this car.
    • GTSBoy
      Airbox for +T

      By GTSBoy · Posted

      By "reverse flow", do you mean "return flow"? Being the IC having a return pipe back behind the bumper reo, or similar? If so... I am currently making ~250 rwkW on a Neo at ~17-18 psi. With a return flow. There's nothing to indicate that it is costing me a lot of power at this level, and I would be surprised if I could not push it harder. True, I have not measured pressure drop across it or IAT changes, but the car does not seem upset about it in any way. I won't be bothering to look into it unless it starts giving trouble or doesn't respond to boost increases when I next put it on the dyno. FWIW, it was tuned with the boost controller off, so achieving ~15-16 psi on the wastegate spring alone, and it is noticeably quicker with the boost controller on and yielding a couple of extra pounds. Hence why I think it is doing OK. So, no, I would not arbitrarily say that return flows are restrictive. Yes, they are certainly restrictive if you're aiming for higher power levels. But I also think that the happy place for a street car is <300 rwkW anyway, so I'm not going to be aiming for power levels that would require me to change the inlet pipework. My car looks very stock, even though everything is different. The turbo and inlet pipes all look stock and run in the stock locations, The airbox looks stock (apart from the inlet being opened up). The turbo looks stock, because it's in the stock location, is the stock housings and can't really be seen anyway. It makes enough power to be good to drive, but won't raise eyebrows if I ever f**k up enough for the cops to lift the bonnet.
×
×
  • Create New...