Who's running a catch can?

synolimit · 06-12-2013, 12:54 PM

Quote:

Originally Posted by wstar

The other pair of tubes that go to the sides of the intake tubing feed fresh air from the intake to the crankcase.

FYI that's impossible. The PCV goes to the crank case. The inlet tubes suck air out of the valve cover. The manifold and the inlet tubes are always always in vacuum unless at wot when the mani is at zero or in boost when its +psi. Air can't get sucked into the inlet tube from the outside and then get pushed into the crank case as the crank case and valve covers are always having pressure built up. All those hoses are out's, not in's. that's why the valve covers and cranks vents are hooked up to two different vacuum sources. They are always pulling pressurized air out if the block and valve covers. Only at WOT does the crank case vents get blocked off when the PCV gets pushed closed. But the valve cover vents are always getting air sucked out no matter If you're at idle, wot NA or TT.

Sh0velMan · 06-12-2013, 01:16 PM

Quote:

Originally Posted by synolimit

FYI that's impossible. The PCV goes to the crank case. The inlet tubes suck air out of the valve cover. The manifold and the inlet tubes are always always in vacuum unless at wot when the mani is at zero or in boost when its +psi. Air can't get sucked into the inlet tube from the outside and then get pushed into the crank case as the crank case and valve covers are always having pressure built up. All those hoses are out's, not in's. that's why the valve covers and cranks vents are hooked up to two different vacuum sources. They are always pulling pressurized air out if the block and valve covers. Only at WOT does the crank case vents get blocked off when the PCV gets pushed closed. But the valve cover vents are always getting air sucked out no matter If you're at idle, wot NA or TT.

Hate to tell you this, but you're wrong.

Our cars don't have a true PCV system apparently, it runs in a vacuum, or at the bare minimum, it is vacuum assisted when at low RPM. At any rate there is definitely an IN and an OUT.

They suck metered (and filtered) air from the intake tube through the crankcase and out the outlet to the intake manifold.

Poorly made diagram attached.

RED: Filtered air into crankcase
GREEN: Air from PCV valve to can
BLUE: Air from catch can to intake manifold (vacuum line)

chrischhorn · 06-12-2013, 01:23 PM

Quote:

Originally Posted by Sh0velMan

Hate to tell you this, but you're wrong.

Our cars don't have a true PCV system apparently, it runs in a vacuum, or at the bare minimum, it is vacuum assisted when at low RPM. At any rate there is definitely an IN and an OUT.

They suck metered (and filtered) air from the intake tube through the crankcase and out the outlet to the intake manifold.

Poorly made diagram attached.

RED: Filtered air into crankcase
GREEN: Air from PCV valve to can
BLUE: Air from catch can to intake manifold (vacuum line)

Nice job! That looks awesome!

Sh0velMan · 06-12-2013, 01:38 PM

Quote:

Originally Posted by chrischhorn

Nice job! That looks awesome!

Thx brosef!

If you want to do the same setup I can give you a parts list and info on how to fabricate your air/oil separators to go in the cans.

Total parts cost with everything was like $80 with shipping.

Chuck33079 · 06-12-2013, 01:43 PM

Quote:

Originally Posted by Sh0velMan

Thx brosef!

If you want to do the same setup I can give you a parts list and info on how to fabricate your air/oil separators to go in the cans.

Total parts cost with everything was like $80 with shipping.

Can I get in on this too?

Sh0velMan · 06-12-2013, 01:45 PM

Quote:

Originally Posted by Chuck33079

Can I get in on this too?

Maybe I should do a DIY or something... I didn't take a lot of pictures because I was in a rush and honestly, I didn't try very hard to make the parts I fabbed pretty, just functional.

I'll need to make some diagrams illustrating how to fabricate the internal parts.

You'll need some basic tools like a dremel with cutting wheels, maybe a hack saw and a bench/tech vice of some kind.

Chuck33079 · 06-12-2013, 01:51 PM

Please do. A DIY and parts list would be really helpful.

chrischhorn · 06-12-2013, 02:01 PM

Quote:

Originally Posted by Sh0velMan

Thx brosef!

If you want to do the same setup I can give you a parts list and info on how to fabricate your air/oil separators to go in the cans.

Total parts cost with everything was like $80 with shipping.

Send me the list dude. I'm also looking at a catch can setup that NeverBoneStck did on his G37 with go kart catch cans but good to have plenty of DIY options

but yes, you definitely should do a DIY on this cause this is a very nice setup. Much cleaner then most out there.

Sh0velMan · 06-12-2013, 02:51 PM

Quote:

Originally Posted by chrischhorn

Send me the list dude. I'm also looking at a catch can setup that NeverBoneStck did on his G37 with go kart catch cans but good to have plenty of DIY options

but yes, you definitely should do a DIY on this cause this is a very nice setup. Much cleaner then most out there.

DIY: Dual Catch Cans with Air/Oil Separators... On the CHEAP!

Boom.

synolimit · 06-13-2013, 02:22 AM

Ill take your word then.

Wonka2581 · 06-13-2013, 04:37 AM

Sub'd to read later,

Zoren 370 · 06-13-2013, 04:45 AM

What does it do for your Z?

Chuck33079 · 06-13-2013, 07:11 AM

Quote:

Originally Posted by Zoren 370

What does it do for your Z?

A catch can? The same thing it does for any vehicle. It collects the vapor that the pcv system and crank vent feeds back ito the intake tract. This way you're not adding oily vapor to the clean fresh air your motor is trying to burn.

Sh0velMan · 06-13-2013, 07:24 AM

Quote:

Originally Posted by synolimit

Ill take your word then.

Alrighty. Not trying to be a jerk or anything, honest!

06-12-2013, 01:51 PM	#52 (permalink)
Chuck33079 A True Z Fanatic Join Date: Nov 2011 Location: Houston Posts: 12,265 Drives: 2011 370ztt Rep Power: 29538	Please do. A DIY and parts list would be really helpful. XwChriswX, chrischhorn and 7AT_Z like this. __________________ 2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent

06-13-2013, 02:22 AM	#55 (permalink)
synolimit A True Z Fanatic Join Date: May 2013 Location: Columbus, OH Posts: 5,051 Drives: 2013 Silver 370z Rep Power: 3389	Ill take your word then. __________________ 13 370z- Last edited by synolimit; 06-13-2013 at 02:49 AM.

06-13-2013, 04:37 AM	#56 (permalink)
Wonka2581 A True Z Fanatic Join Date: Nov 2012 Location: Chattanooga, TN Posts: 3,083 Drives: MY WIFE CRAZY.... Rep Power: 2611	Sub'd to read later, __________________ "I have nothing to offer but blood, toil, tears and sweat""Winston Churchill"

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