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View Full Version : Baffled Catch Can (pics)


YLD244
01-23-2008, 02:49 AM
Hi guys, some of you may remember that i have added a breather port to where the mechanical fuel pump would go.
Well today i finished my baffled catch can / breather box.

Check it out.

here is the 32mm breather pod i ordered the other day

http://home.exetel.com.au/yld244/pics/catch_can_054.jpg

this is the can with all the fittings we machined up.
The top fitting is actually a pipe that goes all the way in to within around 2" of the bottom.
http://home.exetel.com.au/yld244/pics/catch_can_055.jpg

Here you can see the baffle pipe
http://home.exetel.com.au/yld244/pics/catch_can_056.jpg

Machined boss on the bottom for mounting with 6mm bolt into factory hole where bellypan would go.
http://home.exetel.com.au/yld244/pics/catch_can_057.jpg

all painted up ready to go.
http://home.exetel.com.au/yld244/pics/catch_can_058.jpg

Breather pod attached:
http://home.exetel.com.au/yld244/pics/catch_can_059.jpg

mounted between cooler and battery with two 5/8 lines. 1 to the new port, 1 to the factory breather box under intake manifold
http://home.exetel.com.au/yld244/pics/catch_can_061.jpg

view through the grill
http://home.exetel.com.au/yld244/pics/catch_can_062.jpg


http://home.exetel.com.au/yld244/pics/catch_can_064.jpg

plantto
01-23-2008, 03:44 AM
Lookin' good I need to get a catch can soon.

Krunk Fu
01-23-2008, 03:46 AM
very nice

pwschuh
01-23-2008, 09:48 AM
Looks nice. Any copper wool or SS wool inside?

500dollar744ti
01-23-2008, 09:50 AM
very nice catch can, i need a better one, this ebay cheapie i got is kind of annoying but works for now, i like the shape, size, and build quality of that one you have there.

Bishop
01-23-2008, 09:51 AM
I keep meaning to rig one up for the 745T, that looks real good.

Aoder1
01-23-2008, 10:05 AM
great job on it, looks well built

stylngle2003
01-23-2008, 10:55 AM
excellent work

Citysurf740
01-23-2008, 01:47 PM
that is some great welds, you did them yourself. and now just out of curiosity what improvements do you see with this Catch can?

YLD244
01-23-2008, 04:28 PM
Looks nice. Any copper wool or SS wool inside?

nah no need for any if you weld the baffle in.
plus that is what the filter is for. It is venting to atmosphere.

youd wanna use the ss wool if you are gonna plumb back to intake.

fidel
01-23-2008, 08:18 PM
no drain? just gonna unbolt it when it gets full? besides that great work.

A-Rode
01-23-2008, 08:20 PM
pardon my ignorance, but what is it?

Poik
01-23-2008, 08:25 PM
With that filter on the top, won't that be where the intake sucks most of the air from? Instead of the crankcase?

Disco Inferno
01-23-2008, 10:21 PM
Haha... Very nicely done.

My catch can was cheap, isn't baffled, and doesn't even have a filter on it, just dribbles anything it hasn't caught out through a hose.

And it's very neatly mounted with zipties. :zeeall:

Volvos3
01-23-2008, 10:53 PM
That is much Niceness.
Here is a cheapo.
http://www.cadillacfaq.com/faq/answers/oilcatch/index.html

YLD244
01-23-2008, 11:10 PM
With that filter on the top, won't that be where the intake sucks most of the air from? Instead of the crankcase?

its not plumbed to intake. both hoses go to the crankcase

Volvos3
01-23-2008, 11:12 PM
Can You do this on a NA car ?

YLD244
01-23-2008, 11:12 PM
no drain? just gonna unbolt it when it gets full? besides that great work.

due to the size of the can and the fact that my motor doesnt breathe heavy yet, it will take at least 2 years before any oil will accumulate in there.

Its easy to get to, so unbolting is easy to do if it needs draining.

YLD244
01-23-2008, 11:16 PM
Can You do this on a NA car ?

yes you can. but the presure in the crankcase wont be as high. I believe The factory system is sufficient for an NA motor, unless you are revving over 7000rpm.

Volvos3
01-23-2008, 11:25 PM
Is this what causes all the oily buildup in my intake hose next to the TB ?

kyote
01-23-2008, 11:48 PM
What happens when the oil level comes above the 2" that the pipe is above the bottom of the catch can? And why not have some suction on it? It's pretty, but totally nonfunctional IMO.

YLD244
01-24-2008, 12:00 AM
What happens when the oil level comes above the 2" that the pipe is above the bottom of the catch can? And why not have some suction on it? It's pretty, but totally nonfunctional IMO.

suction is not required. as it is Positive pressure only.
i dont want to reburn oil vapor so that is why i havnt plumbed it to the intake.

Also it will take a long time to fill the can to where the baffle starts. Like at least 2 years

2fast242gt
01-24-2008, 12:04 AM
yeah true, why is the pipe so far down?

McLovin
01-24-2008, 01:08 AM
What happens when the oil level comes above the 2" that the pipe is above the bottom of the catch can? And why not have some suction on it? It's pretty, but totally nonfunctional IMO.

Do you really think he would go through all of that just to have a nonfunctional piece of equipment?:roll:

kyote
01-24-2008, 01:19 AM
My catch can is already half full, and I've only been running it for 500 miles or so. It will fill up past that point, and he hasn't even a sightglass to see if this has occured. I am sorry to dissent, but with that long pipe and no suction, even if vented, I don't see this catch can helping a whole lot, if atall.

YLD244
01-24-2008, 02:32 AM
My catch can is already half full, and I've only been running it for 500 miles or so.

something is seriously wrong with your motor then

Disco Inferno
01-24-2008, 02:41 AM
^ Exactly what I was thinking...


Mine's been in for 1000km now, and only a small film of goop has accumulated. That's normal, full isn't. :omg:

YLD244
01-24-2008, 02:43 AM
^ Exactly what I was thinking...


Mine's been in for 1000km now, and only a small film of goop has accumulated. That's normal, full isn't. :omg:

yeah same here, hardly any oil in there, mainly just condensation from the 5-10 min drive to and from work everyday.

kyote
01-24-2008, 02:43 AM
nah, motors fine. doesn't burn oil, just gets that nasty yellowish crap in the catch...

DecalServiceBrett
01-24-2008, 09:30 AM
nah, motors fine. doesn't burn oil, just gets that nasty yellowish crap in the catch...

+1, i've seen it. It's nasty. Yellow nastyness.

cjstephens
01-24-2008, 09:51 AM
Why would the breather need suction? Just because the old system like many returns to the intake, doesnt mean it has to. On my golf I had a setup exactly like this. If I am wrong please feel free to explain, apart from environmental reasons is there a problem with not plumbing it back to the intake?

I think you are all just jealous

Cj

BDKR
01-24-2008, 10:35 AM
yes you can. but the presure in the crankcase wont be as high. I believe The factory system is sufficient for an NA motor, unless you are revving over 7000rpm.

+1! A lot of factory street bikes these days with 12K + redlines have 'em. Some aren't very big at all. On my last Suzuki, it was just a tube with a cap on the end and instructions in the manual to "Drain this from time to time". :rofl: