Catch can noob question
 

I just got in an oil catch can, I won’t lie it’s a cheap one I just bought better lines for it... but, the baffle is on the inlet, not the outlet... is that correct? I thought the baffle should go on the outlet to stop anything from going out, and the inlet should be free and open... am I wrong?

I was also planning on putting some steel wool in there to help it collect.

Switch the inlet/outlet

That’s what I was thinking just hook the hoses up different, but I want to make sure if I’m right or not first, maybe I’m not lol

Check out the diagram in this guy's video:

https://www.youtube.com/watch?v=PWz6vCnJ4CA

https://i.imgur.com/hk8Bobf.png

Baffle should always be on the inlet. The whole point of the catch can is to capture particulate matter and oil vapor/droplet. The purpose of the baffle is to cause a venturi-esque effect where the air is slowed, and particulates contact a surface to collect. "cleaned" air then escapes. This can't occur if a baffle is sitting right at the out/exhaust port.

TL:dr DO NOT switch the inlet/outlet like said above.

In my experience with similar equipment in an industrial setting, it was always setup as per Buzzkill247 above - the work is done on the inlet side.

My logic says baffle should be on the outlet too, but I'm no expert.

Thanks all! Good info in here!

Are you just running lines just from the front pcv(like the DIY) or are you running both pcv and the intake breather vent into the can?

From the front pcv, but I also have an m370 so they’re t’d into a single line. Got it installed today! It looks nice! I’ll post a pic tomorrow... seb from specialty Z said my cars pulling a little timing possibly from blow by lowering my octane... I put on the catch can and used an air compressor to blow out the lines to make sure there wasn’t any oil built up in there. But I didn’t take off the upper mani and clean it... how long do you think I need to run before I can tell if it’s not pulling timing or anything? I feel like I need to take it apart and do some cleaning first.

Why would you run the crank intake breather side off the catchcan?? 1) always run from behind the MAF so you always have metered and filtered air. 2) always run your catch exhaust to atmospheric vent or back to intake manifold.

Those instructions are there for a reason. Far smarter people have engineered and tested and wrote the instructions. For a reason.

Maybe I didn’t understand the question, the pcv is t’d in the front, those two lines connect into a line that runs to my in on my catch can, the out then connects to the directly to the back of the m370 manifold. Is that not correct? I’ll take pictures on my lunch break and post them.

Edit: before, there was one single line that ran from the two t’d pcv valves, directly into the back of the manifold. I basically just put a catch can in the middle of that loop.

So just leave the breather hooked up? I must have misunderstood when i started planning this, i thought both the pcv and the cc breather would allow oil and gunk back into the intake.

And isn't the admin catch can combo running all 4 vents to the cans? cap the intake and manifold ports, run both vents on the valve cover per side to the can then vented via filter?

just like the 13th post here
http://www.the370z.com/forced-induct...tered-air.html

only I was going to use 2 cheaper cans......is that all wrong?!?

LOL. My first thought was "That looks like an EE drawing." Yup. He's awesome.

No. The back crankcase port on VQ motor is meant to intake METERED and filtered air from behind the MAF.
The front crankcase port is the blow by exhaust and by factory is routed to intake manifold - THIS is the one meant to go to the INTAKE of a catch can.

So your'e saying the Admin Tuning catch can is built wrong and doesn't function properly? hmmm...one of the top Z shops in the country or random guy on some forum......not sure who to go with here

most likley you can go with both. There are like a zillion functional ways to plumb a catch can.

edit: for clarification - the Admin can vents the crankcase to atmosphere and deletes the PCV system...Buzzkill is describing closed loop catch can plumbing, which mirrors the factory routing but runs the dirty air through the can while preserving the PCV system. So - both sources are correct....

Is there any benefit to running catch cans on a stock system with no mods?

Now this is a NOOB question :bowrofl:

Absolutely!

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http://i65.tinypic.com/zl7kg0.jpg

http://i68.tinypic.com/35d5n2b.jpg

Sooo... is mine not hooked up correctly then?
There used to be a single hose connecting where the blue and green marked hoses plug into, but now it has the two hoses with a baffled catch can in the middle.

Doesn't look like it. Are both hoses connected to the intake manifold? If so, it's not doing anything (hard to tell). More importantly, what are the crankcase ports connected to?

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So if you use your car as a DD or GT car where you are mostly in near closed throttle (pcv open) most of the time, what Sway is setting up will catch most of the blow by.

If it is raced as much as it is driven like a responsible person (lots of WOT, track days ect) then a full pcv delete is the better option to keep oil and gunk out of the intake.

Do i have that right?

I have no idea which is better... both methods should keep gunk out of your intake.

I dont really have any understanding of what Sway has done, based on his pictures... its hard to tell though.

Would like to see some better pics of that as well. Too small to see what he did