PCV question on AAM twin turbo kit

Jshvr · 10-14-2016, 09:49 PM

This is probably a simple question for most. I'm wrapping up my AAM twin turbo install and am setting up the pcv system.

It comes with two check valves, and lines. The lines come from the intake pipe to the valve cover. Which way should the air be flowing? Should the flow be from the intake pipe to the valve cover or from the valve cover to the intake pipe? Help on this is greatly appreciated!

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blueranger · 10-15-2016, 01:56 AM

Quote:

Originally Posted by Jshvr

This is probably a simple question for most. I'm wrapping up my AAM twin turbo install and am setting up the pcv system.

It comes with two check valves, and lines. The lines come from the intake pipe to the valve cover. Which way should the air be flowing? Should the flow be from the intake pipe to the valve cover or from the valve cover to the intake pipe? Help on this is greatly appreciated!

Sent from my iPhone using Tapatalk

Intake pipe creates vacuum and valve cover vent "vents".

Jshvr · 10-15-2016, 01:14 PM

right now the check valves are set up so that the air flow would be from the valve cover to the intake pipe.

The issue is that there is a huge vacuum so that when I remove the oil cap right after turning the car off it sucks in a lot of air. I know pressure is bad but what about vacuum?

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blueranger · 10-15-2016, 02:46 PM

So you are getting vacuum from the oil fill spout right after you turn the car off?

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Jshvr · 10-15-2016, 03:01 PM

Yes

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Jshvr · 10-15-2016, 03:18 PM

I'm going to just remove the check valves all together

NismoRudyJ · 12-22-2016, 10:59 PM

Any updates on this?

Jshvr · 12-22-2016, 11:08 PM

Capped intake, breathers on pcv, setting up catch cans between valve covers and intake pipes.

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blueranger · 12-23-2016, 12:29 AM

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Jshvr · 12-23-2016, 10:09 AM

Quote:

Originally Posted by blueranger

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Ok so looks like you are running the same set up cool!! Do the catch cans catch a lot of oil?

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jchammond · 12-23-2016, 11:07 AM

IDK about the same set-up' ,,, but Blue has the Big-Boy Kit!!!

blueranger · 12-23-2016, 11:15 AM

I just installed them a few days back so we will see how much they collect.

Jshvr · 12-23-2016, 04:51 PM

Quote:

Originally Posted by jchammond

IDK about the same set-up' ,,, but Blue has the Big-Boy Kit!!!

What do you mean by "big boy kit"?

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NismoRudyJ · 12-23-2016, 11:40 PM

Real nice setup, looks good!
I'm thinking about doing away with my check valves also!

dayhkr · 01-17-2019, 06:59 PM

I know this thread has been dead for some time but I am dealing with this issue right now. I am unsure on which direction the check valves between the intakes and the valve covers should be flowing. From everything I read I would think it would go from the intake to the valve cover but when I hook it up like this and delete the PCV valves and put a catch can inline I get smoke. I haven't tried putting the catch can in place of the intake check valves and I am wondering if that worked out for others?

10-14-2016, 09:49 PM	#1 (permalink)
Jshvr Base Member Join Date: May 2013 Location: Savannah GA Posts: 173 Drives: 13 Nissan 370z GM M6 Rep Power: 29	PCV question on AAM twin turbo kit This is probably a simple question for most. I'm wrapping up my AAM twin turbo install and am setting up the pcv system. It comes with two check valves, and lines. The lines come from the intake pipe to the valve cover. Which way should the air be flowing? Should the flow be from the intake pipe to the valve cover or from the valve cover to the intake pipe? Help on this is greatly appreciated! Sent from my iPhone using Tapatalk

10-15-2016, 02:46 PM	#4 (permalink)
blueranger Track Member Join Date: Aug 2012 Location: Albuquerque NM Posts: 577 Drives: 2010 Roadster 7AT Rep Power: 307	So you are getting vacuum from the oil fill spout right after you turn the car off? Sent from my iPhone using Tapatalk __________________ F.I. Stage 1 Twin Turbo #48 \| E85 FlexFuel \| Built 7AT \| F.I. 34 Row Oil Cooler \| F.I. Flex Plate \| F.I. 19 row Trans Cooler \| MT ET Street S/S \| ECUTEK Tuned by Seb \| RPM Roll Bar

12-22-2016, 11:08 PM	#8 (permalink)
Jshvr Base Member Join Date: May 2013 Location: Savannah GA Posts: 173 Drives: 13 Nissan 370z GM M6 Rep Power: 29	Capped intake, breathers on pcv, setting up catch cans between valve covers and intake pipes. Sent from my iPhone using Tapatalk wideglideleon likes this.

12-23-2016, 12:29 AM	#9 (permalink)
blueranger Track Member Join Date: Aug 2012 Location: Albuquerque NM Posts: 577 Drives: 2010 Roadster 7AT Rep Power: 307	Sent from my iPhone using Tapatalk jchammond likes this. __________________ F.I. Stage 1 Twin Turbo #48 \| E85 FlexFuel \| Built 7AT \| F.I. 34 Row Oil Cooler \| F.I. Flex Plate \| F.I. 19 row Trans Cooler \| MT ET Street S/S \| ECUTEK Tuned by Seb \| RPM Roll Bar

12-23-2016, 11:07 AM	#11 (permalink)
jchammond A True Z Fanatic Join Date: Nov 2014 Location: South Carolina Age: 58 Posts: 15,204 Drives: 13’ 370Z TS 7A/T Rep Power: 2684395	IDK about the same set-up' ,,, but Blue has the Big-Boy Kit!!! __________________ MazWorx built long block \| FI-TT-100 Stage 2.75 \| IPT built 7A/T http://www.the370z.com/members-370z-...s-musings.html

10-15-2016, 01:14 PM	#3 (permalink)
Jshvr Base Member Join Date: May 2013 Location: Savannah GA Posts: 173 Drives: 13 Nissan 370z GM M6 Rep Power: 29	right now the check valves are set up so that the air flow would be from the valve cover to the intake pipe. The issue is that there is a huge vacuum so that when I remove the oil cap right after turning the car off it sucks in a lot of air. I know pressure is bad but what about vacuum? Sent from my iPhone using Tapatalk

10-15-2016, 03:01 PM	#5 (permalink)
Jshvr Base Member Join Date: May 2013 Location: Savannah GA Posts: 173 Drives: 13 Nissan 370z GM M6 Rep Power: 29	Yes Sent from my iPhone using Tapatalk

10-15-2016, 03:18 PM	#6 (permalink)
Jshvr Base Member Join Date: May 2013 Location: Savannah GA Posts: 173 Drives: 13 Nissan 370z GM M6 Rep Power: 29	I'm going to just remove the check valves all together

12-22-2016, 10:59 PM	#7 (permalink)
NismoRudyJ Base Member Join Date: Oct 2014 Location: Louisiana Age: 34 Posts: 23 Drives: 2013 NISMO 370Z Rep Power: 11	Any updates on this?

12-23-2016, 11:15 AM	#12 (permalink)
blueranger Track Member Join Date: Aug 2012 Location: Albuquerque NM Posts: 577 Drives: 2010 Roadster 7AT Rep Power: 307	I just installed them a few days back so we will see how much they collect. __________________ F.I. Stage 1 Twin Turbo #48 \| E85 FlexFuel \| Built 7AT \| F.I. 34 Row Oil Cooler \| F.I. Flex Plate \| F.I. 19 row Trans Cooler \| MT ET Street S/S \| ECUTEK Tuned by Seb \| RPM Roll Bar

12-23-2016, 11:40 PM	#14 (permalink)
NismoRudyJ Base Member Join Date: Oct 2014 Location: Louisiana Age: 34 Posts: 23 Drives: 2013 NISMO 370Z Rep Power: 11	Real nice setup, looks good! I'm thinking about doing away with my check valves also!

01-17-2019, 06:59 PM	#15 (permalink)
dayhkr Base Member Join Date: Aug 2017 Location: Arizona Posts: 22 Drives: 2016 Nissan 370z Rep Power: 8	AAM Twin Turbo PCV I know this thread has been dead for some time but I am dealing with this issue right now. I am unsure on which direction the check valves between the intakes and the valve covers should be flowing. From everything I read I would think it would go from the intake to the valve cover but when I hook it up like this and delete the PCV valves and put a catch can inline I get smoke. I haven't tried putting the catch can in place of the intake check valves and I am wondering if that worked out for others?

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