Jump to content
SAU Community

Is My Oil Catcher Plumbed Wrong? Not Catching Oil

KrazyTurk

By KrazyTurk,
in Engines & Forced Induction

 Share

Recommended Posts

KrazyTurk Enthusiast

KrazyTurk

Posted
Posted

iv had cases of oil leaks before but asumed it was leaking from the oil catcher though i did get that replaced

now i noticed theres still leaks but its not coming from the catcher but from some sort of filter under the pod i think its a breather ?

iv attached a picture of how my catchcan settup is and where the leaking is from (brown shading represents oil leaks)

http://i.imgur.com/P3jxTH7.png

the catchcan itself seems literally empty

my question is why isnt the catchcan catching the oil? but passing down through the breather

R_34 Community Regular

R_34

Posted
Posted

The oil catch can doesn't catch the oil because it doesn't see any blow-by gases through it.

The catch can shall be between the rocker cover and the breather/intake pipe.

As is your catch can is totally useless.

KrazyTurk Enthusiast

KrazyTurk

Posted
  • Author
Posted (edited)

ah i see this whole thing is plumbed incorrectly then and despite the several mechanics i went to about it didnt mention anything

even though the breather is before the catchcan wouldn't the can at least catch something other side of rocker cover?

i have a feeling the can might be installed incorrectly by the mechanic too lol

just figured that the breather/filter i was confused about was there to vent gases/oil to atmosphere instead of the intake

Edited by KrazyTurk
Ben C34 Grand Master

Ben C34

Posted
Posted

Yep that's a fairly retarded way to plumb in the catch can. It would only catch what's coming out of the inlet cam cover

How much is coming out anyway? A healthy engine none should come out.

  • Like 1
GTSBoy Grand Master

GTSBoy

Posted
Posted

That means two things

1 your engine is tired.

2 your catch can sucks. It should be baffled.

Actually it doesn't necessarily mean 2 until such time as he sets the plumbing up properly and then oil still comes out the vent.

OP......you need the catch can to be in the path between the engine and the vent. Merge the two hoses from the cam covers together and hook them to one connection on the catch can. Connect the vent to the other port on the catch can. Run it and report back. If the can works, then there will be oil in it. If the can doesn't work (per Ben's suggestion above) then there will be oil in it and oil outside it!

Blackkers Experienced

Blackkers

Posted
Posted

worth noting that the filter/breather is a bad idea. Hook it up to the turbo intake.

1. It's illegal

2. the filter material will become soaked in oil and drip. also it's a fire hazard

3. Supposedly exposing the crank case to vacuum from the turbo will help keep the rings on their seats with a worn engine. I don't know how true this is.

4. Also if you've got blowby, and I assume you do. then boost is escaping from the combustion chamber into the crankcase where it is venting to atmosphere. typically you want this to recirculate to the turbo's inlet. I'm not sure if this would affect AFR's though

Anyway, hook up the catch can between the rocker covers and the compressor inlet. That should allow you to tick all the boxes of legality while keeping oil out of your intake

  • Like 1
  • 3 weeks later...
KiwiRS4T Grand Master

KiwiRS4T

Posted
Posted

so i hooked everything up correctly and now noticed smoke coming out from exhaust pipe?

Ok that indicates that oil fumes are getting though the catch can so you need to baffle the catch can and/or put an air/oil seperator (could be another baffled catch can) into the line from the catch can to the turbo intake. If there is masses of oil coming out at WOT refer to the oil control thread for more answers.

Ben C34 Grand Master

Ben C34

Posted
Posted

When you say hooked it properly most people would take that as you hooked it up the proper way, with the catch can venting back to the inlet.

Are you sure it's hooked up properly at the moment?

GTSBoy Grand Master

GTSBoy

Posted
Posted

That's not hooked up properly. That filter on the far right.....shouldn't be there. That hose should be hooked up to the turbo inlet pipe, so that the air that flows through the catch can into the engine has been through the AFM. We explained all that already.

Ben C34 Grand Master

Ben C34

Posted
Posted

It's a shame even after being told how to do it you still do it wrong, and are adamant that it's correct.

It's wrong.

Simple as that. If you don't understand that's cool, get someone who knows what they are doing to do it.

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

    • CF.Panda
      R34 25GT Engine Light 21

      By CF.Panda · Posted

      I wasn’t able to replicate the sound anymore. It was a one time sound so maybe it was just coincidence but it was like small pebbles being dropped in a coke can.   should I try cleaning the MAF? It could be it’s functioning but dirty? I don’t know.
    • sunsetR33
      Unpeeling the Orange

      By sunsetR33 · Posted

      Update 4: Hi all. The car drives again! Haven't driven for long, only to store it in the garage again, but the test drive was successful. The coolant and oil leaks seem to be fixed for now. Temps on the engine were also very good, while moving I never even saw 80C water during the approx. 30 minute drive. Ate up all the coolant in the reservoir though so will have to fill that even more when I go to the car next time. One thing that pisses me off is that the RPM gauge is still f**ked, I even resoldered the board twice and used copper paste on the silly screws that are used as connections. Next time I take it out I'll take apart the board and fit new components, I'll see if I can get a replacement IC for it.  I have an appointment set for 22nd of September for the engine tune to 370hp. Alignment also still needs to be done. My hope is that I can get all the legal stuff over with by the end of this season. Anyone of you have advice regarding intercoolers? Currently there is an APEXI core fitted, one of those weird hybrid ones, 600x270x76. I don't think it's bad but it's not new and now I still have the chance to change it now to legally include it in the paperwork. Only issue is that the only options that would arrive in time are a HKS Type R intercooler or generic Ebay spec intercoolers comparable to a JustJap one. Ideally I'd order a Plazmaman but it takes over a month to receive which would mean making the car legal has to wait until next season. Would love to hear some input on this. Same story for my injectors, the previous owner was a nunce and put ID 1050x on the engine. They work but are obviously not ideal at "normal" power levels. But I don't see a reason to change them unless the tuner says it's necessary. I read online before buying a different exhaust that the top secret style rear diffusers won't fit due to the size of the rear resonators. My buddy and I made it work by slightly "adjusting the shape" of the mounting bracket and making some spacers out of 3d print for the mounting bolts. Fits like a charm. Just putting this here in case someone has this problem. Even the hefty HKS Silent Hi Power rear can fits without hitting anything.
    • Butters
      UniClutch

      By Butters · Posted

      Well they got my money but they are not getting my gearbox ! 
    • GTSBoy
      ECU sees many times the speed than speedo does (R34 swap)

      By GTSBoy · Posted

      It's needed for rolling idle up, and I think it is a decider on VCT also.
    • Kinkstaah
      ECU sees many times the speed than speedo does (R34 swap)

      By Kinkstaah · Posted

      I mean, not really. Link ECU's can absolutely still have errors from the ECU thinking it's getting a sensor it's not expecting. I would imagine the speed at the ECU level in Nistune does absolutely nothing anyway? I assume the ECU does not do any fancy TC stuff with regards to front+rear wheel speed or anything of that like anyway. Someone who uses Nistune may be more fluent in it. 
×
×
  • Create New...