Catch Can - How important is it?

Drakos · 06-24-2009, 11:54 PM

Quote:

Originally Posted by Mike@N54Tuning.com

Stay tuned for some info about a new catch can solution coming soon

Mike

Mike, please keep me posted on your catch can. I'm in

Former_Boosted_IS · 06-25-2009, 06:20 AM

Quote:

Originally Posted by Turkishexpress

I think I'm going to go against the grain and say if the BMW engineers thought it was necessary they would have put one in there. Honestly I only have experience with OCCs when running a big turbo on big boost (30+ psi) at which point its a very good idea. For our tiny little snails, naaaaa....

Take off your charge pipe or intercooler and look in there. Heck, take out your T-MAP sensor and look in there.

TurboBimmer · 06-25-2009, 06:46 AM

Quote:

Originally Posted by Drakos

Mike, please keep me posted on your catch can. I'm in

+1 Very interested!

Pylon · 06-25-2009, 07:54 AM

Quote:

Originally Posted by Turkishexpress

I think I'm going to go against the grain and say if the BMW engineers thought it was necessary they would have put one in there. Honestly I only have experience with OCCs when running a big turbo on big boost (30+ psi) at which point its a very good idea. For our tiny little snails, naaaaa....

Techies correct me if I'm wrong but I don't think the size of the turbo is the issue here, we 335iers have Direct Fuel Injecton which makes the problem worse.

ianthegreat · 06-25-2009, 08:23 AM

My god damned OCC is leaking again after all my reclamping, thread taping, etc.. adfgsdfhkgsfyigefksdf. Mike hurry up

ianthegreat · 06-25-2009, 08:28 AM

Quote:

Originally Posted by Turkishexpress

I think I'm going to go against the grain and say if the BMW engineers thought it was necessary they would have put one in there. Honestly I only have experience with OCCs when running a big turbo on big boost (30+ psi) at which point its a very good idea. For our tiny little snails, naaaaa....

When you're doubling the boost on those tiny snails then it may be worth it. I installed my helix FMIC this weekend and saw about half a shot glass worth of oil sloshing around on the inlet side of the intercooler. The outlet side was relatively clean comparatively, but oil still coated the walls so it was definitely passing through.

bimdaddy · 06-25-2009, 10:12 AM

Matt, you've done a few IC. How much oil do you usually see?

Quote:

Originally Posted by Sniz

yeah just get the McKinney

shifterboy45 · 06-26-2009, 12:04 AM

i have a few friends that are techs for BMW dealers and the concensus is -- YES

officially speaking no one at BMW will say the cyclone separator and cc venting system is not up to the task of processing this engines oil vapor in an efficient manner.. but the "proof is in the pudding" - no pun intended.

after picking up my car, one tech told me that i should pick up a catch can, as they are seeing a few incidents of rough running and erratic performance on higher mileage 335's. I asked why and he said the cars came in and after 2-3 troubleshooting sessions, they pulled off the intake manifolds and saw the caked carbon on the intake valve. they did what he called a "de-carb" on the intake valves and the problems went away. that was enough to sell me ..

but after hearing that the riss occ was leaking i have been hesitant to buy anything, till i hear its resolved or there is a better kit option other than putting together a kinney can, im in a holding pattern

i just don't have the time and "horsepower" to get into a piece meal project, even though i hear good things about it. plus i drive only a few miles to work and back -- i use another car for the rest of my tasks.

soontobe · 06-26-2009, 02:19 AM

Quote:

Originally Posted by Grendalf

Here is a photo of the Air/Oil separator that I have on my STi.

I miss my suby, but love my evo and can't wait to get an e90. That's a good looking catch can too. Someone should talk crawford into making stuff for the N54.

Pylon · 07-03-2009, 02:25 PM

I'm so close to pulling the trigger on a McKinney Catch Can. What to do what to do.

06-25-2009, 08:23 AM	#27
ianthegreat Colonel 60 Rep 2,314 Posts Drives: n54 Join Date: Apr 2008 Location: Pittsburgh/Houston iTrader: (1)	My god damned OCC is leaking again after all my reclamping, thread taping, etc.. adfgsdfhkgsfyigefksdf. Mike hurry up
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06-26-2009, 12:04 AM	#30
shifterboy45 Major 23 Rep 1,179 Posts Drives: 2009 335i Coupe Join Date: Feb 2009 Location: North by Northwest iTrader: (0)	catch can necessary ??? OH YEAH!!!! i have a few friends that are techs for BMW dealers and the concensus is -- YES officially speaking no one at BMW will say the cyclone separator and cc venting system is not up to the task of processing this engines oil vapor in an efficient manner.. but the "proof is in the pudding" - no pun intended. after picking up my car, one tech told me that i should pick up a catch can, as they are seeing a few incidents of rough running and erratic performance on higher mileage 335's. I asked why and he said the cars came in and after 2-3 troubleshooting sessions, they pulled off the intake manifolds and saw the caked carbon on the intake valve. they did what he called a "de-carb" on the intake valves and the problems went away. that was enough to sell me .. but after hearing that the riss occ was leaking i have been hesitant to buy anything, till i hear its resolved or there is a better kit option other than putting together a kinney can, im in a holding pattern i just don't have the time and "horsepower" to get into a piece meal project, even though i hear good things about it. plus i drive only a few miles to work and back -- i use another car for the rest of my tasks.
	Appreciate 0 Quote

07-03-2009, 02:25 PM	#32
Pylon First Lieutenant 23 Rep 302 Posts Drives: 2009 BMW 335i Join Date: Nov 2008 Location: Toronto, Ontario iTrader: (1)	I'm so close to pulling the trigger on a McKinney Catch Can. What to do what to do. __________________ SOLD 2009 E92 335i M-Sport \| Alpine White \| Navi \| Audiophille \| 19" 225M Rims
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