Even us "old timers" learn something new. - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Danial · 01-04-2020, 10:25 AM

I'm sure it's probably been talked about ad naseum on here but after seeing another reference to it, I finally got around to researching the uses of and need for a catch can. Talk about eye-opening.

I found an excellent article about the system and will be installing one soonest.

https://oppositelock.kinja.com/ditch...ate-1634156554

CamaroBarb · 01-04-2020, 01:55 PM

Be careful what you believe reading some of this. If you just vent the crankcase to atmosphere your engine will surely be damaged from water-acid build up. Every gal of fuel you burn dumps about a cup of water past the rings into the crankcase. The constant vacuum the PVC pull on the crankcase pulls this water vapor out before it can mix with the oil and form acids. The catch can is a good idea but no vacuum on the crankcase is a big no no.

Black 6.2L SS · 01-04-2020, 08:37 PM

I ran a catch can on my previous performance car and it caught oil.
After 1 year of owning this SS I recently added an Elite catch can. I’m always surprised when I check it and discover the oil caught by the can that would have otherwise been ingested back in. Valuable.

mikeman · 01-04-2020, 09:31 PM

Quote:

Originally Posted by CamaroBarb

Be careful what you believe reading some of this. If you just vent the crankcase to atmosphere your engine will surely be damaged from water-acid build up. Every gal of fuel you burn dumps about a cup of water past the rings into the crankcase. The constant vacuum the PVC pull on the crankcase pulls this water vapor out before it can mix with the oil and form acids. The catch can is a good idea but no vacuum on the crankcase is a big no no.

I always cringe when I see these beautiful engine compartments and they have an open breather in the clean side PVC return port.

0stones0 · 01-04-2020, 10:12 PM

Forgive me for somewhat hijacking the thread for a moment but, maybe someone can enlighten me.
My LS3 is one of the unlucky ones to have the intake baffle not working correctly. With this condition, your intake takes in quite a bit of oil. The work around is to close off the outlet from the baffle and connect the catchcan from the rear valve cover outlet (which is closed off, stock) to the throttle body inlet. Are there any known ill effects with this configuration vs. replacing the baffle?
Thanks

Black 6.2L SS · 01-05-2020, 12:07 AM

How would I know if my intake baffle is not working correctly as you mention?

0stones0 · 01-05-2020, 04:02 AM

Quote:

Originally Posted by Black 6.2L SS

How would I know if my intake baffle is not working correctly as you mention?

Here is a good read on the subject. Excessive oil in catchcan.

Black 6.2L SS · 01-05-2020, 09:35 AM

Quote:

Originally Posted by 0stones0

Here is a good read on the subject. Excessive oil in catchcan.

Wow - that’s good to know. I had no idea. I’ll watch my can and measure every 1000 miles. Thanks!

0stones0 · 01-05-2020, 09:48 AM

Quote:

Originally Posted by Black 6.2L SS

Wow - that’s good to know. I had no idea. I’ll watch my can and measure every 1000 miles. Thanks!

PeteD · 01-05-2020, 12:31 PM

Only thing is, it is not always just oil that is in the catch cans...……..Take a sample and send it into black labs and they will tell you exactly what is in it. Because there is also a lot of condensation and other things in there

01-04-2020, 10:25 AM	#1
Danial Drives: 2013 SS/RS, 2015 Camaro SS/RS Vert Join Date: Sep 2019 Location: Southern Nevada Posts: 2,128 View My Garage	Even us "old timers" learn something new. I'm sure it's probably been talked about ad naseum on here but after seeing another reference to it, I finally got around to researching the uses of and need for a catch can. Talk about eye-opening. I found an excellent article about the system and will be installing one soonest. https://oppositelock.kinja.com/ditch...ate-1634156554

01-04-2020, 10:12 PM	#5
0stones0 It don’t come easy. Drives: 2010 2SS RS M6 Join Date: May 2014 Location: WI Posts: 2,206 View My Garage	Forgive me for somewhat hijacking the thread for a moment but, maybe someone can enlighten me. My LS3 is one of the unlucky ones to have the intake baffle not working correctly. With this condition, your intake takes in quite a bit of oil. The work around is to close off the outlet from the baffle and connect the catchcan from the rear valve cover outlet (which is closed off, stock) to the throttle body inlet. Are there any known ill effects with this configuration vs. replacing the baffle? Thanks __________________ Last edited by 0stones0; 01-04-2020 at 10:35 PM.

01-05-2020, 12:31 PM	#10
PeteD Drives: 2012 2SS Victory Red with white st Join Date: Jun 2016 Location: NC Posts: 1,612	Only thing is, it is not always just oil that is in the catch cans...……..Take a sample and send it into black labs and they will tell you exactly what is in it. Because there is also a lot of condensation and other things in there __________________ My YouTube channelhttps://www.youtube.com/channel/UCid...AUbfN2HOE71B9w

01-04-2020, 01:55 PM	#2
CamaroBarb Banned Drives: cheby Camaro Join Date: Aug 2019 Location: usa Posts: 575	Be careful what you believe reading some of this. If you just vent the crankcase to atmosphere your engine will surely be damaged from water-acid build up. Every gal of fuel you burn dumps about a cup of water past the rings into the crankcase. The constant vacuum the PVC pull on the crankcase pulls this water vapor out before it can mix with the oil and form acids. The catch can is a good idea but no vacuum on the crankcase is a big no no.

01-04-2020, 08:37 PM	#3
Black 6.2L SS Drives: 2014 1SS/RS, LS3, NPP Join Date: Feb 2019 Location: Florida Posts: 184	I ran a catch can on my previous performance car and it caught oil. After 1 year of owning this SS I recently added an Elite catch can. I’m always surprised when I check it and discover the oil caught by the can that would have otherwise been ingested back in. Valuable.

01-05-2020, 12:07 AM	#6
Black 6.2L SS Drives: 2014 1SS/RS, LS3, NPP Join Date: Feb 2019 Location: Florida Posts: 184	How would I know if my intake baffle is not working correctly as you mention?