Oil Catch can not needed on L99?? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Rcfiddy1 · 08-06-2010, 01:38 PM

Since the PCV is pumped back into cyl heads and not the valley on a L99 why would a catch can be needed?

KnightRiderSS · 08-06-2010, 02:03 PM

http://www.camaro5.com/forums/showth...ight=catch+l99

Rcfiddy1 · 08-06-2010, 02:14 PM

I know it needs neg pressure to draw oil, but why do they say its routed back to Cylinder head?

bmbbl be · 08-06-2010, 02:20 PM

its goes into the throttle body

Scruffage · 08-06-2010, 03:14 PM

If the LS3 has air/oil separator on both the clean and foul side as the article below states, why is a oil catch can needed?

This catch can stuff is new to me, just asking.

http://www.camarohomepage.com/ls3/

axis · 08-06-2010, 04:19 PM

Quote:

Originally Posted by Rcfiddy1

I know it needs neg pressure to draw oil, but why do they say its routed back to Cylinder head?

There are only two places that will produce negative pressure, that you can draw from. One is the exhaust, the other is the intake. Since the intake provides more vacuum, this is the optimal place. Since the intake is used, it draws that pressure (with oil vapor) into the intake air which goes into the intake plenum, then to the cylinder heads. This isn't the ideal situation for maintaining high performance. It won't kill your engine but it will degrade it's performance. A $100 catchcan is cheap insurance to keep your engine running at peak performance.

Quote:

Originally Posted by Scruffage

If the LS3 has air/oil separator on both the clean and foul side as the article below states, why is a oil catch can needed?

This catch can stuff is new to me, just asking.

http://www.camarohomepage.com/ls3/

Not sure where that oil/air seperator is located, but there isn't one between the valve cover and the intake pipe.

KnightRiderSS · 08-06-2010, 04:25 PM

I'm glad for the info about it needing the pressure from the intake to operate correctly...I was thinking about just slapping a filter on the end of the hose from the catch can like I did on my bike

axis · 08-06-2010, 04:29 PM

Quote:

Originally Posted by KnightRiderSS

I'm glad for the info about it needing the pressure from the intake to operate correctly...I was thinking about just slapping a filter on the end of the hose from the catch can like I did on my bike

You can do that but it won't be as effective and what happens to the oil when the filter gets soaked? Had one on my old Talon Turbo and it got oil EVERYWHERE under the hood.

KnightRiderSS · 08-07-2010, 01:03 AM

Quote:

Originally Posted by axis

You can do that but it won't be as effective and what happens to the oil when the filter gets soaked? Had one on my old Talon Turbo and it got oil EVERYWHERE under the hood.

Well I was thinking if I put it past the catch can...so it shouldn't do that?

But since the intake provides vacuum for the system I am planning on just hooking it all up.

08-06-2010, 01:38 PM	#1
Rcfiddy1 Sold car... Drives: 2010 Rally Yellow 2SS/RS #37115 Join Date: Oct 2009 Location: Manalapan, New Jersey Posts: 2,019 View My Garage	Oil Catch can not needed on L99?? Since the PCV is pumped back into cyl heads and not the valley on a L99 why would a catch can be needed? __________________ Build Thread ECS Novi 1500 Supercharged, LS3 conversion, Small blower cam, Alky Meth injection, 3:45 rear, BMR Suspension parts, 1LE Sways, Billy Boat ZL1 dual mode exhaust.

08-06-2010, 02:03 PM	#2
KnightRiderSS Voodoo Medicine Man Drives: Black 2SS with RS package Join Date: Jul 2010 Location: IL Posts: 917	http://www.camaro5.com/forums/showth...ight=catch+l99 __________________

08-06-2010, 02:14 PM	#3
Rcfiddy1 Sold car... Drives: 2010 Rally Yellow 2SS/RS #37115 Join Date: Oct 2009 Location: Manalapan, New Jersey Posts: 2,019 View My Garage	I know it needs neg pressure to draw oil, but why do they say its routed back to Cylinder head? __________________ Build Thread ECS Novi 1500 Supercharged, LS3 conversion, Small blower cam, Alky Meth injection, 3:45 rear, BMR Suspension parts, 1LE Sways, Billy Boat ZL1 dual mode exhaust.

08-06-2010, 04:25 PM	#7
KnightRiderSS Voodoo Medicine Man Drives: Black 2SS with RS package Join Date: Jul 2010 Location: IL Posts: 917	I'm glad for the info about it needing the pressure from the intake to operate correctly...I was thinking about just slapping a filter on the end of the hose from the catch can like I did on my bike __________________

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08-06-2010, 02:20 PM	#4
bmbbl be Drives: 2010 CAMARO SS Join Date: Apr 2010 Location: ohio Posts: 1,360	its goes into the throttle body

08-06-2010, 03:14 PM	#5
Scruffage Drives: 2011 2ss Rs LS3 manual in black Join Date: Jul 2010 Location: KY Posts: 402	If the LS3 has air/oil separator on both the clean and foul side as the article below states, why is a oil catch can needed? This catch can stuff is new to me, just asking. http://www.camarohomepage.com/ls3/