I know there are a few different configurations, but which one catches the most oil? If any of you can help me on this, I'd appreciate it. I have NO idea what goes where for the catch can. :help:
Thanks!
- Ninja
elchicoyes
04-01-2006, 12:13 PM
It's hard to explain, but I'll try my best. I have one that replaces a long black line, that attaches to the upper part of the throttle body to the top left of the engine. Should keep your FMIC free from oil in the intake. I have another on the part where the typhoon CAI attaches to the engine by a small tube at the end of where it says 2.4 L Turbo. Sorry I have no pics or anything and I suck on explaining. I tried my best good luck.
Andy
04-01-2006, 04:11 PM
PCV -> Catch can -> Intake Manifold
Alot of people run a check valve after the catch can aswell.
Also, with aftermarket intakes a lot of people put a breather on the intake side. You can also put a second catch can there. A lot less blow by comes out of that side, my understanding is it only vents out of that side under boost. I put a breather on just recently after seeing all the oil in my intake, eventually it will reach the turbo and will gunk it up. The oil in there is like tar. That hose is otherwise connected to the stock intake box outside of the intake into a sponge.
Ninja-Matic
04-01-2006, 08:59 PM
Thanks for the 4-1-1 guys... I'll let you know how the install goes when I get the CC in!
Ninja-Matic
04-03-2006, 12:37 PM
I was just thinking today... correct me if I'm wrong, guys... the vac hose between the PCV and the Throttle body - you can put a CC in there... um... how will that keep your FMIC and Turbo clean? Isn't the TB the final component before your upper intake - head - engine block? You'd be keeping the TB and Upper intake clean - but there's nothing catching the oil before that system. I found oil when I replaced my Air Intake... post breather for the valve cover... going into the turbo from there...
Oil travels from your Valve Cover breather to your AI or CAI through the turbo - through your hot side - through the FMIC - through the cold side - then into the TB. That's the only way oil will enter your Turbo or FMIC.
Wouldn't it be more beneficial for your turbo components to place the can between your Valve Cover and AI or CAI? Or just run a line from the Valve Cover to a smaller catch can and place a breather on the exhaust side of that can. Then what to do with the hole in your CAI? Plug it with something or leave it open?
You'll catch more oil from the PCV to the TB - but you'll miss the important components we want to protect... am I correct? Or how does oil go from the TB back to the turbo since the turbo feeds air through TO the TB?
:dunno:
-Ninja
Andy
04-03-2006, 10:03 PM
You're partially correct... The oil build up in the intercooler and cold side pipe indeed comes from the PCV connection to the intake manifold. Some oil is burnt in the combustion process, some builds up in the intake manifold and throttle body as sludge, and the rest drips down through the throttle body into the coldside pipe/intercooler where it sits and builds up.
Your concern about the driver side is right though, but the issue is mostly a product of aftermarket intakes. Look at the stock setup, the air make up hose is connected to the box outside of the intake into a sponge. It's listed in the maintenance book to inspect/replace this sponge every 15,000 miles. With an aftermarket intake the hose connects right before the turbo and the turbo of course sucks the oil through the intake tube eventually into/onto the turbo itself. Like I said, after seeing that oil in my CAI, and how it was a tar like sludge I finally got off my ass and put a breather on the air make up hose so the oil wouldn't reach the turbo. There wasn't a ton of oil in there but it was at the elbow right before the turbo. Basically, we can thank emissions restrictions for this whole issue.
You can put a second catch can on the drivers side. I'm not convinced it's definitely necessary though. Much less blow by comes from that side. If you put a breather on it, it will eventually soak up with oil and need to be replaced or cleaned to avoid oil dripping in the engine bay. The hole on the CAI just needs to be capped with a vacume cap.
Ninja-Matic
04-03-2006, 11:38 PM
Roger that, Andy! I still don't know everything about turbos but at least my mind was leaning in the right direction. I'll keep the breather in mind for the driver's side when going putting the CC in this week or next. Thanks again!
- Ninja
Ninja-Matic
04-06-2006, 09:10 PM
Here's what I've created to slap onto the driver's side valve cover vent:
Dunno why the Mini-CC shows up in bright white, lol - it's clear to me! Instead of the hose connecting straight into the intake tubing... I'm running a hose to a small CC with breather on it, then capping my CAI. Depending on how much oil will be collecting in the CC - I may just use the breather. Parts total: $14 at Home Depot and $6 at Pep Boys. Thanks Andy for the suggestion on the CC/Breather. My eBay CC will be in tomorrow - I'll be taking pics of everything I've done this weekend! Thanks again everyone!
- Ninja
Andy
04-06-2006, 09:25 PM
After you put that on report back on how much that side catches... I'm curious as to just how much blow by comes out of that side.
I can almost fill my cc with two tanks of gas.
Andy
04-06-2006, 09:29 PM
lol... That'd be a big can to fill with two tanks of gas. People should understand what I mean :D
Ninja-Matic
04-06-2006, 09:52 PM
I'll be keeping an eye on it... I'm sorry I won't be much help for a few weeks on the report - I only drive her pending nice weather on the weekends... Which is why she only has 1589 miles on it since I bought her in September last year. I'll try to do a bit of a run - 100 miles or so around the city and the highway this Sunday if weather is OK. I'll let you know what I see then.
Most of the pics I've seen are people with just straight breathers, no CC. I'm actually guessing that barely any oil passes through that breather when not connected to the AI - so I may just ditch the Mini-CC later.
How is your breather holding up, Andy? Do you see any oil collecting since you installed?
- Ninja
Andy
04-06-2006, 10:22 PM
I have about 700 miles with the breather on, its dry at this point.
Damn man, I wish my car still had that few miles lol... I'm about to hit 12,000. I got mine Nov 1. :crazy:
Ninja-Matic
04-06-2006, 10:55 PM
Cool. I think I'll ditch the CC and just run a breather - I'll keep the CC just in case I don't like my eBay CC - I can just run it like you've got yours set up. I think it's the same one (Husky? Home Depot?) If that's the one, did you take out the pin and use a screw-on cap for the drain? And how much is it catching?
Andy
04-06-2006, 11:53 PM
No, I just unscrew the whole thing to dump it out. Its slightly more than 1/3 full after one tank of gas (about 180 miles), so two tanks it's close to full.
Clint Burleigh
04-07-2006, 09:40 AM
When mine gets just over 1/3 full it starts pushing oil through the line so I usually empty it while I am getting gas.
I was just thinking... do I need to plug the small hole in my CAI where the hose was connected? I mean... could anything get sucked through a 3/8" hole from inside the engine?
Andy
04-07-2006, 07:50 PM
Yeah, use a vacume cap, or whatever. Could suck up bugs, dirt.
Ninja-Matic
04-07-2006, 08:22 PM
Aye - just bought one... a little bit longer than what it needs so i cut the length down so it's just a bump - but it works good enough and is fairly pliable.
Andy
04-27-2006, 09:30 PM
My breather is already leaking oil... I thought of this thread today when I saw it
It's not like a huge oil leak, but it's starting to make a mess already
Ninja-Matic
04-27-2006, 10:19 PM
My breather seems to be ok right now. I'm having issues with a leak at the stock PCV where I have my hoses connected. I am going to take it apart, clean everything, put it back together then use some RTV Sealant on the thing to button it up a bit. I'm sure since oil goes through that line that it has a chance of working it's way through my connection fittings, especially since I haven't placed a check-valve anywhere yet. I'm getting one on the way home tomorrow and put it right off the Intake Manifold outlet for the PCV - that way the stock PCV will never be under pressure. I've got hose clamps everywhere tightened to the point where if I go further I'll risk breaking the clamp, lol.
