[Funkmob]

This weekend i reinstalled all my mods after my recent check up. So currently im running full catless on the RB turbo's. I drove around with them on the stock downpipes and exhaust for about 1000km.

Running full open exhaust now , i notice i puff of blueish smoke coming out of the exhaust when coming to a standstill. It only does it when i come to a stop , then it puffs out a small cloud of smoke and thats it.

The smoke definitly smells like burned oil.

I can't say if its coming from both pipes or just one. Just see it when sitting in the car .

I did not notice this before with the stock exhaust but thats probably cause its fully catted.

When i installed my mods i also cleaned out my k&n filter that is connected to my CAI intake. I oiled the filter maybe a bit too generously.

I also have the BSH oil catch can , but after about 30 000km there still is only about 1mm of oil level visible on the dipstick.

Its hard for me to believe the turbo's are going bad already after about 1500km of use.

Any ideas?

[AcExSpades]

Maybe bad valve seals?

[///M3THOD]

Was the smoke coming out of the tip on the left side?

[kdiggz]

blueish smoke is oil. does it smell like burning oil also? a little puff isn't bad. u have straight thru exhaust so that is almost to be expected i would think. when it starts smoking all of the time, especially when under boost, is when u have to start worrying

[vasillalov]

Get rid of the BSH oil catch can! It is junk. See here:

http://www.e90post.com/forums/showthread.php?t=513999

Also, try to notice if the smoke is coming out of the left or the right tail pipes. My car had THE EXACT same symptoms. I ignored it for a bit until a friend of mine happened to drive behind me one day and noticed that blue smoke is now coming out of my left tail pipe under acceleration.

Right now, my car is being serviced and possibly the turbos are getting replaced.

Not sure if the Rob Beck turbos are any different when it comes to the oil seals in them though. This oil burning problem is becoming a common thing recently.

[Big Tom]

Originally Posted by Funkmob

I also have the BSH oil catch can, but after about 30 000km there still is only about 1mm of oil level visible on the dipstick.

Wow! Thats really, really bad.

This is all the oil that Vasillalovs's BSH OCC managed to collect after over 16.000 km. Also really, really bad. :





I would never install an OCC which has fittings like this:




The smallest inner diameter of the stock PCW is 16 mm and a working OCC should never ever have fittings or tubings that is smaller. You do not want an overly restrictive PCW.
I can assure you that there's a reason that BMW's engineers chose those specific dimensions.


Anyway, I wish you all the luck with your turbos...

[badass335]

I had the same thing on my car regarding smoke. I never noticed it as I had hi flow cats. After I went catless, started noticing smoke and oily smell in garage. Wife drove behind me a few times and she said car was smoking bad on take offs. Hard to see through tint.

Took car in and seals are leaking! Getting them replaced as we speak. Hopefully I pick it up tomorrow!

[Funkmob]

First thing i will do this weekend is throw that BSH catch can out.
For now i will try to disconnect it from the intake and let it vent to athmosphere. This way i can rule out if its crankcase venting into the intake.

Since the crankcase vent is connected to the rear intake tube , fumes should leave the passenger exhaust side , correct?

I will also put a new intake filter on to see if its the filter oil going thru the intake.

When i put my downpipes on there was nothing to see on the turbo's that would indicate there is oil seeping into the exhaust .

I do have a leaking valve cover gasket that will be replaced next week , but i don't see that as a possible source for smoke coming out of the backside of the car.

First thing i will do now is have somebody drive behind me to see wich pipe is fuming.

The car only does it when coming to a stop , just one puff of smoke.

[tibra1]

Originally Posted by vasillalov

Get rid of the BSH oil catch can! It is junk. See here:

http://www.e90post.com/forums/showthread.php?t=513999

Also, try to notice if the smoke is coming out of the left or the right tail pipes. My car had THE EXACT same symptoms. I ignored it for a bit until a friend of mine happened to drive behind me one day and noticed that blue smoke is now coming out of my left tail pipe under acceleration.

Right now, my car is being serviced and possibly the turbos are getting replaced.

Not sure if the Rob Beck turbos are any different when it comes to the oil seals in them though. This oil burning problem is becoming a common thing recently.

Oh please you have no basis for saying this..just b/c your particular car doesnt have much blowby or is leaking somewhere between the PCV and the can.. doesnt mean the OCC doesnt work..

i run the BSH and have been catching oil with it from day one..full catless..n absolutely no smoke, blue or any other color outta of my tail pipes..The turbos are leaking oil somewhere..this is chance you take with uprated turbos

[Funkmob]

Originally Posted by Big Tom

Wow! Thats really, really bad.

This is all the oil that Vasillalovs's BSH OCC managed to collect after over 16.000 km. Also really, really bad. :





I would never install an OCC which has fittings like this:




The smallest inner diameter of the stock PCW is 16 mm and a working OCC should never ever have fittings or tubings that is smaller. You do not want an overly restrictive PCW.
I can assure you that there's a reason that BMW's engineers chose those specific dimensions.


Anyway, I wish you all the luck with your turbos...

Big Tom,

Can you link me to a thread about your occ? You seem to have a good working solution , i would like to fabricate something similar.

[Big Tom]

Originally Posted by Funkmob

First thing i will do this weekend is throw that BSH catch can out.
For now i will try to disconnect it from the intake and let it vent to athmosphere. This way i can rule out if its crankcase venting into the intake.

Just look inside the outgoing hose on the OCC and you'll see if it's collecting the oil in the fumes or not.
Unfortunately Vasillalov did find oil there, which clearly shows that this OCC doesn't work properly.

[dzenno]

funkmob, I'd take the OCC off first, BSH is restrictive, period...once you take it off let the oil burn off for a day or two and have someone drive your car and you go behind it in another to watch and get an opinion with your own eyes on the smoke...a few of us have already had issues with smoke on RBs with modifications to the stock PCV...go back to stock PCV and take it from there..

tibra1, please refrain from those comments as you have no factual evidence/data to back up your claims...its been proven that the BSH OCC "with upgraded turbos" poses a crankcase ventilation restriction...you're on stock turbos so your comments don't hold...keep running your BSH, no one is telling you not to...

[tibra1]

Originally Posted by Big Tom

Just look inside the outgoing hose on the OCC and you'll see if it's collecting the oil in the fumes or not.
Unfortunately Vasillalov did find oil there, which clearly shows that this OCC doesn't work properly.

"Clearly"..LOL..u guys r hilarious..u get one poor sap whose not catching oil and you blame the can..so what does that say about mine that has caught oil since day one

[tibra1]

Originally Posted by dzenno

tibra1, please refrain from those comments as you have no factual evidence/data to back up your claims...its been proven that the BSH OCC "with upgraded turbos" poses a crankcase ventilation restriction...you're on stock turbos so your comments don't hold...keep running your BSH, no one is telling you not to...

Are you kidding?..factual evidence?..I am living proof it works..please dont get started on you PCV saga here ok?

If anyone is going off w/o factual evidence its those saying the can doesnt work b/c THEY have no oil in the can..where are the facts there and why dont you chastise them

[tibra1]

OP dont go chasing unicorns here..you most likely have an oil leak out of your turbos..this is where you need to focus your attention

[dzenno]

Originally Posted by tibra1

Are you kidding?..factual evidence?..I am living proof it works..please dont get started on you PCV saga here ok?

If anyone is going off w/o factual evidence its those saying the can doesnt work b/c THEY have no oil in the can..where are the facts there and why dont you chastise them

you're living proof it works? lol ok

FWIW, my BSH OCC didn't collect any oil either...glad yours is working "great" on your car and that it was a good investment...

now get out of this thread LOL funkmob is on RB turbos, you're on stock, different setups, your opinion just doesn't matter in this case sorry

[Big Tom]

Originally Posted by tibra1

"Clearly"..LOL..u guys r hilarious..u get one poor sap whose not catching oil and you blame the can..

So, BSH is a good working OCC?
Please comment this then:




It does NOT collect as much oil as it should and it has some really restrictive parts in it's design.

Good working OCC? Nope.
Sorry for that.

[tibra1]

Originally Posted by Big Tom

So, BSH is a good working OCC? Please comment this then:

It does NOT collect as much oil as it should and it has some really restrictive part in it's design. Good working OCC? Nope. Sorry for that.

I have this much oil in my BSH just under a thousand miles..



Everyone is entitled to their opinions and if u dont like the BSH cool..just please dont layer it under the guise of facts..b/c there is no factual basis here....its purely arbitrary why some are catching oil and some are not..many other factors can account for this

[Big Tom]

Originally Posted by Funkmob

Big Tom,

Can you link me to a thread about your occ? You seem to have a good working solution , i would like to fabricate something similar.

Here you go sir:

http://www.e90post.com/forums/showpo...&postcount=362



And here's what it collected after 500 km (300 miles):

[///M3THOD]

Originally Posted by Big Tom

It does NOT collect as much oil as it should and it has some really restrictive part in it's design.

Good working OCC? Nope.
Sorry for that.

So, with current offerings, in what direction would you recommend going in then. Do you have any opinions on the AR Design OCC?

I think you have a good market here.. maybe you should make some on a preorder basis

[vasillalov]

Originally Posted by ///M3THOD

So, with current offerings, in what direction would you recommend going in then. Do you have any opinions on the AR Design OCC?

I think you have a good market here.. maybe you should make some on a preorder basis

I went back to completely stock PCV system. Reasons:

1. There are two more PCV valves that you have no control over unless you remove your valve cover and go fuck around with the entire system. The OCC's attempt to capture oil fumes ONLY under boost conditions. When you cruize, idle or decelerate, nothing is going through the OCC.

2. The vast majority of the OCCs out there are sitting on top of the hot turbos and their internal design relies on oil fumes condensating on the walls/mess/screen of the OCC. Guess what, that ain't happening if the OCC is as hot as everything around it. You need to put the OCC in a location where the fumes will condensate. However, this requires extra long tubing which in return causes a massive pressure drop. So the OCC attached to long ass tubing, regardless of the diameter, will be rendered useless or at the worst: causing pressure changes in the PCV system.

3. Hell, our cars already come with the best OCC available. It is called an intercooler. I have absolutely no problem taking mine off and washing it with denaturated alcohol twice per year. Same goes for the valve cleanup job.

[Big Tom]

Originally Posted by tibra1

I have this much oil in my BSH just under a thousand miles..

Attachment 558067

Everyone is entitled to their opinions and if u dont like the BSH cool..just please dont layer it under the guise of facts..b/c there is no factual basis here....its purely arbitrary why some are catching oil and some are not..many other factors can account for this

You still haven't commented why the BSH OCC are having oil in the outgoing pipe.

As a comparsion; The outgoing hose on my OCC is completely dry.