PoorMans180SX

Yes, the slit needs to be exposed for proper scavenging. Definitely run a check valve when running it into your exhaust.

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jr_ss

The slit needs to be facing the exhaust flow, so that exhaust gases enter the slit and leave the slash cut. This creates the "siphon" effect and is the source of vac.

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bmxer882x

with an exhaust evac setup like this how do you run the other side? Still the same as oem with the pvc valve or did you route it differently also?
I'm trying to get all oil residue out of the intake mani and i like your setup but curious about the other side.

quickdiversion

That's right the pcv side is stock setup, the only thing I changed was adding a catch can before going back into the intake. If you take this side apart, keep in mind , there is a restrictor in the rubber line from the pcv valve to the inlet behind the fuel rail. So if you change this in Any way, be sure to put the restrictor back in.

I have pictures of this restrictor if you want to see it. Or for others that say there is none. I get that a lot. Haha

I still get a little oil and grim. Most of what I get is a ton of water, from rain water and an open turbo.

OutlawLui

Do you get a oil smell in the cabin from the catch can being a breather like that?

i have my catch can also open. And i get a really bad oil fume smell wen i'm driving with my windows down. I'm thinking of just routing it back to the intake after the catch can so i wont get the smell, but i don't want oil in my intake

bleh bleh, sr covers have shitty design

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quickdiversion

You miss read. The turbo is open, as in no tubing or filter on the compressor inlet. The catch can on the opposite side is in from the pcv and out to the inlet. There is no reason for a breather. In fact you don't want or need a breather. The stock setup does not have one. Also it makes no sense to add extra air to the system. The vaccum opens or let's the pcv valve Shut. Adding a breather would intefer with that process.

Sometimes adding things is not the best way to do things.

EsChassisLove

Ok I'm glad I'm not the only one.

I put a can between my PCV and intake and it fills with water fast. I'm told because I don't drive my car much and because I have a looser ring gap. It allows the engine to condensate more than usual.

I didn't run my car for nearly 3 months, with the valve cover only on with 3 bolts not sealed, and in the first 10 minutes my can was half full and the top of my cover was milky.

Lots of condensation haha.

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quickdiversion

I am having trouble seeing why this particular s13/s14 setup has any benefit at all. Yes the s14 vavle cover has better baffling, but the way her ran the pluming in and out of this is wrong, from what the picture show anyway

From what it look like...
The rear inlet goes directly to the crankcase vent, which is fine. But the front goes into a catch can with a breather. How does this help anything? The idea of this system is to create a vacuum in the crankcase, while in boost. This would simply allow more air in, cause there to be air pressure on the back of the cylinders which results in a power lose. Not to mention the stock system for the s13 has vacuum on the crankcase vent. He needs a vacuum source on the catch can and get rid of the breather.

Hence the reason I use a siphon with the exhaust gases.

quickdiversion

I shouldn't say I get a ton of water, I get water in the catch can when I drive in the rain. Since I switched to the exhaust e-vac setup. I get a lot less crankcase condensation. I can tell on start up. I would blow white smoke that smelled like burning water for like 10 minutes while it all heated up and separated out. I barely get any of that now.

EsChassisLove

Ah I never have white smoke or anything bad on start up.

Just condensates like a mofo

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EsChassisLove

Right now I have my can routed back to my intake pipe, but it has a breather on the can also.

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quickdiversion

T/here are no breathers on the stock setup. You don't need them to the system. All you are you are doing with breathers are creating a hole in a pressurized system...

What happens when you put a hole in a pressurized system?

silvia_fiend

Sorry to bump this but I have a question which hasn't been covered after reading through this thread (which I might add I found very helpful and eye opening on a topic that isn't usually discussed).

I have a S13 with an SR20DET and have been trying to be proactive after my dipstick popped up slightly and sprayed some oil out after a recent drift day, engine has been rebuilt about a year ago and the boost is no more than 12psi so I don't think that's the issue, dipstick o-ring seal could be worn but I'd like to address the PCV setup.

At the moment I have a catch can between the T and my air filter (I have a trust airnx filter and the pipe goes into there, which means yes the afm will be seeing unmetered air which I want to remedy), which brings me to my main question; I have a PSM mid mount intercooler setup so not running a BOV. Would this affect the PCV system as there would actually be a positive pressure going back through the turbo and out the intake pipe when coming off the gas on boost? Or is the effect negligible?

cotbu

It's not seeing unmetered air, it's already metered air. Well both depending on when you follow the air and what the engine is doing.
And if its setup like I think it is, it would create turbulence not really positive pressure like you're describing. That's why we say after mafs and before the turbo. And yes turbulent air could cause the mafs to act weird.

Post picture of your screw up, I mean setup.

Sent from my Highly Tuned Galaxy S3.4!!!

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EsChassisLove

Yea I ended up taking the breather off same day.

Everything's back to working perfect. No more sucking up moisture from the air.

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quickdiversion

I was pretty sure it would help if you got rid of your vacuum leak

Nikzilla

I've got a question for you guys.

I just purchased a mishimoto baffled and filtered catch can, and I'm setting it up with all AN braided hose and fittings for fire safety.

I see a lot of people have the AN hose running to the block fitting (the one that goes from the T back to under the manifold). How do you guys get an AN fitting on that?

This is the block fitting I am talking about


How do I convert that to AN?

Also, the guy at FRsport told me that the Mishimoto has -8 AN fittings, (although he's not 100% sure), will there be any detrimental effect on running -8 hose instead of -10?

KoukiMonsta

weld a fitting of your choice to the oem breather tube.

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sil14zenki

this is by far one of the best upgrades i have done.
catch tank has been empty for weeks. and for around $100 i def can't complain.
-8an fittings welded to the top of the valve cover and intake pipe.
-10an fittings welded to the side of cover and oem breather pipe.
i used push loc fittings and hose.

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@andymcfly

Kingtal0n

1. Its nice work. good job emulating the oem setup with the integrated catch can, for the situation in which the engine explodes and oil comes pouring out.

2. Let me ask you, if you take a random tube, and suck on one side with your mouth, what is the pressure differential inside the tube?

I think we need more physics and less random adding containers to our engines. This is what I see happening, "look guys, I added a container where there used to be none. And it stays empty! (why did I add it?)"

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slider2828

Why would it be sucking on both ends in this mod?

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S14DB

I don't know what is funnier. Your lack of knowledge or your poor attempt at sarcasm.

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Kingtal0n

http://www.wika.us/AN_0711_en_us.WIKA

I dont know why you like to post without adding any information or useful discussion. Raising your post count? At least make a contribution

holy crap I just noticed your post count. You live here? Opinion noted btw. 15,000 posts, if each one was 2 minutes, that is 30,000 minutes or 500 hours of time spent additional. You must be rich, to have 500 extra hours of free time from the last ten years sit on zilvia making empty posts.

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delado

Call me crazy but I'm pretty sure he works here or something.

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Kingtal0n

You would think an employee would actually be nice and professional, and not a jackass just floating around to stir shit up.

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5280VertDET

Drama aside:

Can this help us?



http://works-engineering.com/?produc...engine-oil-cap

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KoukiMonsta

tell me mr. science guy, what would the pressure differential be?

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Kingtal0n

We have already approached this issue and it is the same as it was when I approached it on earlier pages(1-X) of this thread, that is, as the plumbing increases in length approaching infinity, the effects of a change in pressure at one end are diminished at the other end, to the point of not making any difference in pressure from baseline at the long end. Please refer to the previous examples in this same thread I have already given.

As a side note,
I'll due my best not to use punctuation when answering questions unless it really requires it

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slider2828

You would have to plumb it an extra pipe and also the opening is pretty small. So I would say it wouldn't help too much....

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slider2828

Long story short, if it is a stock engine running a stock turbo, then this mod won't help too much. But with higher horsepower cars that run higher boost and turbos, then it would help.

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