That tube between your intake and valve cover is for flow into the engine, not out of the engine to the intake.

 

I know that.. doesn't make sense man. :thinking:

If I had it going to my charge pipe, I'd be boosting into the valve cover...

 

no
iexcess pressure is pulled out of the head via the intake tube hole... whcih creates the necessary vacuum to do so

 

dam... where's all the tech guys when I need them? :thinking: :sad:

 

Go read the service manual, it has a pretty thorough description of the flow of vacuum.


Air comes into the head via the valve cover, and exits at the PCV valve under the intake manifold. Which is why that big black catch can is on the back of the block.



Unless you really think that there's somehow less vacuum in your intake manifold than your intake. :eh:

 

That's all great and all, but I want to know how an oil catch can system works - pics, diagrams, explanations. :goodjob:

 

up beoches!

 

Normally, you'll hook a tube up to the pcv valve, and then connect the tube to the catch can. You're basically bypassing the entire charcoal canister, and evap shit. I woulda helped you sooner, but we're never on at the same time! hit me up if you need more help.

 

Sorry I've been away for a while. I've been going through some pretty big changes. I probably won't be spending as much time here as I used to, but I'm not going anywhere. I'll explain later...

Your valve cover breather is supposed to be plumbed into your intake pre-turbo so it can pull vacuum when you're off-boost. What a catch can does is collect oil from the vapor and prevent it from routing back into the intake... before the turbo. Yes, they can be vented to atmosphere, but since vacuum assists the PCV in its operation, I don't really know what the benefit of doing that would be.

On a N/A car, this breather can connect anywhere on the intake pipe. On a boosted car, it needs to be on the intake pipe before the turbo.

Before you assume that the oil IS coming from the valve cover breather, remember that there are 6 places that you could be burning oil from on your engine. I think the valve cover breather is not a likely candidate, but with the way you have it set up (vented) a catch can won't help with your oil burning, it will just look pretty, and will keep you from getting oil blow-by on the outside of your engine like you do now.

1. Bad PCV valve
2. EGR valve (I'm not familiar with the B18's setup).
3. Valve seals
4. Head Gasket
5. Rings
6. TURBO SHAFT SEALS

In reference to #6... What's your peak oil pressure? I know you have a gauge. You have a T3 hybrid, right? Those things are REAL picky about oil pressure. You can never exceed 60 PSI or the seals will blow. A boost leak test will also indicate whether or not you have bad turbo shaft seals. The pressure will leak slowly, and you'll hear your turbo hissing from the exhaust.

Here is why I said to take apart your intake pipes and why you should examine them...

If you see wet oil streaked from the PCV breather hose on your intake pipe, then you probably need to check your PCV valve. If it's working properly, then you CAN benefit from using a catch can. Here are the instructions FOR A DSM (but the Honda principle is the same).

http://www.tgilmore.com/talon/catchcan.html

If you see wet oil pooled in your intake pipes, intercooler, and throttle body inlet... and your PCV valve is okay, then it's your turbo's shaft seals. It either needs to be rebuilt, or you need to start saving money for your next upgrade.

If your intake manifold is crusty and blackened with large chunky carbon deposits, block off your stinkin' EGR valve and call it a day. (but leave any vacuum or electrical connectors in place)

If you pull your plugs, and they're oil fouled, but none of the above are a problem, you'll need to do a compression test and leak down test to determine whether it's the valve seals, head gasket or the rings.

 

Now here's my "explained later" sob-story with a happy ending.

I normally surf these forums every day. After 7 years as a Network Engineer for an ad agency, I got laid off. Ad agencies are getting hit hard during this recession because advertising is the first thing a company cuts when its finances are low. So that hurts people like me because I'm a Mac specialist, and advertising is the best place for my skills to fit in.

I saw it coming. Things were slow at work, we had already been through one round of cuts, and I took precautions. I sold my condo, paid off the GSX, all of my debt, and I'm living with my old drummer now in a really cool house for 2/5 as much as it used to cost me to live. I banked enough from the sale to pay rent here for 3 years after all my debts were paid. I got the master bed/bathroom, too. It's big enough for 4 people, and we have a wet bar with taps and a small powered framed worksop in the back yard (so no more assembling engines in my dining room). The driveway is big enough for about 6 cars and neighbors on only one side. Sorry, no garage.

But I don't need a garage. I've been working at my cousins shop. Not because I have to, just because I need a break from desk jobs. I feel like the guy in Office Space. I've never been happier than I have been since my job lost me. I've stripped the GSX, disassembled the motor, packed up the tranny to ship to TRE, and also been paid for doing several big jobs on other cars when I've been able to help out. Sure, it pays 1000X less than my last job, but I don't even really need the money.

The shop is a converted '60's gas station with a 3-bay garage, 2 250 gallon 220V compressors, 3 lifts, tire mounting and balancing equipment, brake lathes, welding rigs, engine hoists, diagnostic equipment... pretty much everything but alignment equipment, but we still have all the tools to do suspension work. It's got an enormous paved lot. It's been there for 30 years, but my cousin owns it now. At least one of my cars has lived on that lot for the past year, and it's where I do everything to my cars. Free.

So that's where I've been. The GSX is getting built. I have a 24x3.25x10" intercooler core with aluminum piping and a HKS SSQV on its way to me. I'm rebuilding the 7-bolt for good measure. It's got 123k on it, and ZERO crank play. You either have a crankwalk 2g or you don't. I don't. Just going to freshen it up with some Eagle rods, Ross pistons, and a 1g head swap.

I have a whole lot of parts that Honda PPL ought to be interested in. 2g SMIC, 450 injectors, upper and lower 60mm Intercooler pipes (for a DSM), 1g DSM BOV, RoadRace Engineering manual boost controller, CX exhaust manifold, d15b8 longblock...