Catch can noob question

Buzzkill247 · 04-04-2018, 09:27 AM

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.

-ZS-Carpenter · 04-05-2018, 03:15 PM

Quote:

Originally Posted by Buzzkill247

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

Jayhovah · 04-05-2018, 03:19 PM

Quote:

Originally Posted by -ZS-Carpenter

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....

old guy · 04-05-2018, 05:05 PM

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

Now this is a NOOB question

Jayhovah · 04-05-2018, 05:08 PM

Quote:

Originally Posted by old guy

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

Now this is a NOOB question

Absolutely!

Sent from my Nexus 6P using Tapatalk

Sway · 04-05-2018, 11:15 PM

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.

Jayhovah · 04-06-2018, 06:31 AM

Quote:

Originally Posted by Sway

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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-ZS-Carpenter · 04-06-2018, 02:45 PM

Quote:

Originally Posted by Jayhovah

both sources are correct....

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?

Jayhovah · 04-06-2018, 03:00 PM

Quote:

Originally Posted by -ZS-Carpenter

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.

-ZS-Carpenter · 04-06-2018, 04:59 PM

Quote:

Originally Posted by Jayhovah

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

04-05-2018, 11:15 PM	#21 (permalink)
Sway Track Member Join Date: Sep 2012 Location: TX Posts: 697 Drives: 2018 GTR Rep Power: 37870	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. __________________ - White 2018 GTR FBO+E85 - Check out my old build thread: Sway’s Journal-Hitomi ~Live and let live!~

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04-04-2018, 09:27 AM	#16 (permalink)
Buzzkill247 Base Member Join Date: Jan 2018 Location: FL Age: 49 Posts: 91 Drives: 16 370z KAD GunM 7AT Rep Power: 663	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.

04-05-2018, 05:05 PM	#19 (permalink)
old guy A True Z Fanatic Join Date: Apr 2015 Location: S.E. Michigan Age: 67 Posts: 2,706 Drives: 13 magma touring Rep Power: 2684369	Is there any benefit to running catch cans on a stock system with no mods? Now this is a NOOB question