Oil Catch cans

DEpointfive0 · 10-23-2012, 01:21 PM

I THINK this is the right area... (Sorry mods if it's not)

But I wanted to install some oil catch cans. Correct me if I'm wrong, but the purpose is to take out oil from the PCV system and prevent it from going back into the intake/engine...

At one time I had breathers on my old car and it smelled like death, so I took them off

The real question: Do you need expensive ones?
What's the disadvantage to using:
Universal Aluminium Car Engine Oil Catch Tank Can Filter Reservoir | eBay

Has anyone used a cheap-o eBay one?

I do believe in "you get what you pay for", but I just don't get it...

Thanks in advance

SalA · 10-23-2012, 02:29 PM

This is a big discussion on the BMW e90post forum. This fix specifically handles the blow back that TT 335i and M models have. The problem is that at some point within 30K to 40K miles, the valves need to be blasted to remove the oil/carbon buildup (I had this done twice by BMW). This mainly occurs when you drive aggressively and increase boost to the upper range.

Unless you running a TT...Don't think we have the same issues. Would like to hear from any other members as I am thinking about installing the Oil Catch Can by BMS on my 335i .

edub370 · 10-23-2012, 02:31 PM

same thing with the volvo community. only time u need to worry about catch cans is when running much higher boost. never would worry about it on this car

DEpointfive0 · 10-23-2012, 02:48 PM

I'm NA, but why not keep the oil out?
I understand that car makers design a car a certain way, but the PCV system is more for environmental purposes...
i don't think the oil will ever clog anything on out cars, MAYBE the PCV valve itself, but it's usually a cheap fix (or at least on my last car it was $4)

DEpointfive0 · 10-23-2012, 02:52 PM

Great info: Catch Cans

But it says:
Not all Catch Cans are created equally! Most Catch Cans on the market are just comprised of an empty container with 2 ports. While that simple design may trap a few oil droplets, our Catch Can is designed to condense the oil vapor and trap the oil inside the container.

Our test proven design incorporates a stainless steel mesh and screening mechanism that acts like a maze to collect and condense the oil vapor.

I have seen a lot of people adding steel wool for that reason anyways...

SalA · 10-23-2012, 02:54 PM

Quote:

Originally Posted by DEpointfive0

I'm NA, but why not keep the oil out?
I understand that car makers design a car a certain way, but the PCV system is more for environmental purposes...
i don't think the oil will ever clog anything on out cars, MAYBE the PCV valve itself, but it's usually a cheap fix (or at least on my last car it was $4)

Again some of the members that installed the catch cans on their BMW's never see any oil in the can. Others that drive very aggressively and create very high boost on the TT do see as much as a 1/4 of an inch in oil over time. It is a $200 investment, but I think for the Z it is a waste.

DEpointfive0 · 10-23-2012, 03:09 PM

Quote:

Originally Posted by SalA

Again some of the members that installed the catch cans on their BNW never see any oil in the can. Others that drive very aggressively and creat very high boost on the TT do see as much as a 1/4 of an inch in oil over time. It is a $200 investment, but I think for the Z it is a waste.

For $200, I'm not doing it, I agree, BUT if you buy the cheap eBay for $40 (assuming you buy 2) plus $2 for Stainless Steel wool, would it be worth it?

Mainly, what separates a $20 on from a $150-200 one?

cdoxp800 · 10-23-2012, 03:23 PM

DIY: Dual Oil Catch Cans 370Z

wstar · 10-23-2012, 03:31 PM

It's hard to say without links to specific cans. A good can has some kind of baffling/condensing design, and a poor can is an empty box. I would imagine there's both good cheap ones and expensive bad ones.

I run this can: PCV Oil Catch Can for 1997-2004 C5,C5 Z06, C6 LS2 and Z06 Corvette, which is a very solid unit at $160 and has a pretty good condenser/baffle system. Their target market is Vettes, but I happened to know about them because I used one on my Trans-Am years ago. They don't make mounts for our car, but it fits well in the battery box after you relocate the battery

.

10-23-2012, 01:21 PM	#1 (permalink)
DEpointfive0 Premium Member Bitches Join Date: Jan 2012 Location: SoCal Posts: 14,824 Drives: a lot Rep Power: 17151	Oil Catch cans I THINK this is the right area... (Sorry mods if it's not) But I wanted to install some oil catch cans. Correct me if I'm wrong, but the purpose is to take out oil from the PCV system and prevent it from going back into the intake/engine... At one time I had breathers on my old car and it smelled like death, so I took them off The real question: Do you need expensive ones? What's the disadvantage to using: Universal Aluminium Car Engine Oil Catch Tank Can Filter Reservoir \| eBay Has anyone used a cheap-o eBay one? I do believe in "you get what you pay for", but I just don't get it... Thanks in advance

10-23-2012, 02:29 PM	#2 (permalink)
SalA Base Member Join Date: Mar 2010 Location: Milton, GA Posts: 247 Drives: 17 Nissan GT-R Rep Power: 15	This is a big discussion on the BMW e90post forum. This fix specifically handles the blow back that TT 335i and M models have. The problem is that at some point within 30K to 40K miles, the valves need to be blasted to remove the oil/carbon buildup (I had this done twice by BMW). This mainly occurs when you drive aggressively and increase boost to the upper range. Unless you running a TT...Don't think we have the same issues. Would like to hear from any other members as I am thinking about installing the Oil Catch Can by BMS on my 335i . DEpointfive0 likes this. __________________ 2017 Pearl White GT-R Premium \|Full Bolt-On E85 From Speed by Design\| Last edited by SalA; 10-23-2012 at 02:31 PM.

10-23-2012, 02:31 PM	#3 (permalink)
edub370 A True Z Fanatic Join Date: May 2011 Location: KCMO Posts: 3,458 Drives: 09 370z S/T 6MT Rep Power: 20	same thing with the volvo community. only time u need to worry about catch cans is when running much higher boost. never would worry about it on this car __________________ 09 370Z ST 6MT//Injen CAI//Greddy CBE//TP//TSW's//Swifts//Stillen lip//Whiteline sways 326whp/268tq

10-23-2012, 03:23 PM	#8 (permalink)
cdoxp800 A True Z Fanatic Join Date: May 2009 Location: FL Posts: 1,337 Drives: 2011 Nismo Rep Power: 19	DIY: Dual Oil Catch Cans 370Z DEpointfive0 likes this. __________________ 2011 Brilliant Silver NISMO 370z. #: 0046. PPE LTH \| MillSpec Cats \| F.I Exhaust \| Akuma Intakes \| Rotora 6/4 Brakes

10-23-2012, 03:31 PM	#9 (permalink)
wstar A True Z Fanatic Join Date: Mar 2009 Location: Houston, TX Posts: 4,024 Drives: too slow Rep Power: 3594	It's hard to say without links to specific cans. A good can has some kind of baffling/condensing design, and a poor can is an empty box. I would imagine there's both good cheap ones and expensive bad ones. I run this can: PCV Oil Catch Can for 1997-2004 C5,C5 Z06, C6 LS2 and Z06 Corvette, which is a very solid unit at $160 and has a pretty good condenser/baffle system. Their target market is Vettes, but I happened to know about them because I used one on my Trans-Am years ago. They don't make mounts for our car, but it fits well in the battery box after you relocate the battery . DEpointfive0 likes this. __________________ 7AT Track Car! Journal thread / Car setup details

10-23-2012, 02:48 PM	#4 (permalink)
DEpointfive0 Premium Member Bitches Join Date: Jan 2012 Location: SoCal Posts: 14,824 Drives: a lot Rep Power: 17151	I'm NA, but why not keep the oil out? I understand that car makers design a car a certain way, but the PCV system is more for environmental purposes... i don't think the oil will ever clog anything on out cars, MAYBE the PCV valve itself, but it's usually a cheap fix (or at least on my last car it was $4)

10-23-2012, 02:52 PM	#5 (permalink)
DEpointfive0 Premium Member Bitches Join Date: Jan 2012 Location: SoCal Posts: 14,824 Drives: a lot Rep Power: 17151	Great info: Catch Cans But it says: Not all Catch Cans are created equally! Most Catch Cans on the market are just comprised of an empty container with 2 ports. While that simple design may trap a few oil droplets, our Catch Can is designed to condense the oil vapor and trap the oil inside the container. Our test proven design incorporates a stainless steel mesh and screening mechanism that acts like a maze to collect and condense the oil vapor. I have seen a lot of people adding steel wool for that reason anyways...

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