Anyone NOT run with a catch can? - Page 3 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

StealthZL1 · 02-19-2015, 09:42 PM

http://www.camaro5.com/forums/showthread.php?t=318802

ZO6 Bryan · 02-19-2015, 09:51 PM

Quote:

Originally Posted by KaBoom1701

Here's an easy test....

Remove the intake housing going to your TB and take a look or swipe a rag around the TB. If you see small amounts of oil then you know what the catch can catches.

Simple enough.

Like this?

KaBoom1701 · 02-19-2015, 09:55 PM

Yep

370zyzfr1 · 02-19-2015, 11:14 PM

Quote:

Originally Posted by unstable vic

The factory has a 100,000 mile warranty on these motors. If they felt a catch can was important to get to 100,000 miles don't you think it would be there? I for one will not be using one. I am sure they work. Are they needed? I'm not so sure of that.

Comolety agree. Well said. Not saying they are worthless. But someone else said it before, just get the impression the can draws more out and it appears more dramatic. You would think the manufacturer of the engine would invest in a 5 dollar catch can (their cost) if it made any significant difference.

I am not saying I won't get one for piece of mind. I may. But if indeed I do it will
Be for just that.

Holliss69 · 02-19-2015, 11:33 PM

I was of both opinions at one time, No need and why not (like the $200 investment in a $60K car)

....Stock w/CAI only why bother, then spoke to David at MM Solutions and chose to go with one. BOOST is the factory set-ups enemy, yes Stock we all SHOULD be fine but, if you MOD (specifically pulley(s)) it is a wise investment. There are more and more posts here citing rear seal issues with added boost a catch can .... especially one with breather option seems to help.

Again ... no expert but, seems most opinions here sway this direction. IMHO

KaBoom1701 · 02-19-2015, 11:40 PM

The OEM manufactures don't put one on because it's an environment EVAP issue....

They rather recirculate that crap back into your engine for burn off then let it release into the atmosphere....

With the catch can method you are trapping the blow by oil and then you have to dispose if it. Better for performance , worse for tree huggers.

Holliss69 · 02-20-2015, 12:06 AM

^^^^^
Solid point as well....

Caswell239 · 02-20-2015, 12:14 AM

Could you technically run the line to the can and then the other just to atmosphere? And plug the line at intake?

mbowen89 · 02-20-2015, 12:40 AM

Quote:

Originally Posted by Caswell239

Could you technically run the line to the can and then the other just to atmosphere? And plug the line at intake?

I've been wondering this exact same thing.

Do you even need a catch can at all, can you just divert the line down to the ground with no catch can, and plug intake line?

ZO6 Bryan · 02-20-2015, 09:14 AM

Quote:

Originally Posted by Holliss69

I was of both opinions at one time, No need and why not (like the $200 investment in a $60K car)

....Stock w/CAI only why bother, then spoke to David at MM Solutions and chose to go with one. BOOST is the factory set-ups enemy, yes Stock we all SHOULD be fine but, if you MOD (specifically pulley(s)) it is a wise investment. There are more and more posts here citing rear seal issues with added boost a catch can .... especially one with breather option seems to help.

Again ... no expert but, seems most opinions here sway this direction. IMHO

Once again, catch cans won't help excess crankcase pressure. Most aren't vented to atmosphere. And the ones that are, ie. mighty mouse, still won't help because there is a restrictor in the PCV port coming from the lifter valley. There is only a limited amount of air that can come through it. Can or no can it's going to vent the same amount of air. The older cars had a PCV valve, now they have the restrictor. If you want to vent excess pressure it needs to be done at the valve cover. Like the breather JRE sells.

ZO6 Bryan · 02-20-2015, 09:19 AM

Quote:

Originally Posted by Caswell239

Could you technically run the line to the can and then the other just to atmosphere? And plug the line at intake?

No, that would disable the entire PCV system because there would be no vacuum pull to bring fresh air in at the valve covers and all the blowby gases and moisture would just accumulate in your crankcase and in the oil.

ZO6 Bryan · 02-20-2015, 09:21 AM

Quote:

Originally Posted by mbowen89

I've been wondering this exact same thing.

Do you even need a catch can at all, can you just divert the line down to the ground with no catch can, and plug intake line?

You are describing exactly how the cars were set up prior to about 1964.

unstable vic · 02-20-2015, 10:05 AM

About a month after I bought my car and receiving my cars birth cirtificate, I was called by a GM ZL1 engineer who worked on developing the car. We had about a 20 minute conversation about the car. I asked many questions, some about the "common" mods done to these cars. He was very insightful and not just a cut and dry corPorate answer kind of guy. When I asked about the catch can he said it was completely unnecessary and would have no effect at all on the performance or longevity of the motor. He did stress proper break in and good quality frequent oil changes for a clean motor. I for one will take his advise and not be installing one.

Blueclyde · 02-20-2015, 10:18 AM

No catch can and no plans to add one. I'm not looking to start a debate here but in my professional experience, it is not required.

02-19-2015, 09:42 PM	#29
StealthZL1 Drives: 2013 Camaro ZL1 Join Date: Aug 2013 Location: Las Vegas, Nevada Posts: 321 View My Garage	Anyone NOT run with a catch can? http://www.camaro5.com/forums/showthread.php?t=318802

02-19-2015, 09:55 PM	#31
KaBoom1701 KaBoom1701 Drives: 13' ZL1 Red M6 Join Date: Dec 2012 Location: I.E. SoCal (Yucaipa) Posts: 8,631	Yep __________________ Mods: Roto-Fab Intake, WW Res. kit & Big Gulp Air Scoop, Elite Catch Can, ATI Super Damper & 18% OD Pulley, LF Idler pulley bracket, Metco CC breather, ID850 Injectors, Stainless Power Headers w/ ceramic coating, TR71X Spark Plugs, JMS Fuel Pump Booster, Bo White TB, Tuned by Ted @ Jannetty Racing, Ron Davis HX, D3 Reservoir, Pfadt 1" Springs, Moreno Camber Plates, ZL1 Addons Splitter guard washers, Tow Hook kit & rock guards, Hurst Shifter Billet Plus 6 Speed Short Shifter, ZL1 DRL lighting harness, ZL1 Recaro Seats.

02-19-2015, 11:33 PM	#33
Holliss69 Drives: 2013 ZL1 Coupe A6 Join Date: Nov 2014 Location: Arizona/NY Posts: 108 View My Garage	I was of both opinions at one time, No need and why not (like the $200 investment in a $60K car) ....Stock w/CAI only why bother, then spoke to David at MM Solutions and chose to go with one. BOOST is the factory set-ups enemy, yes Stock we all SHOULD be fine but, if you MOD (specifically pulley(s)) it is a wise investment. There are more and more posts here citing rear seal issues with added boost a catch can .... especially one with breather option seems to help. Again ... no expert but, seems most opinions here sway this direction. IMHO Attached Images

02-19-2015, 11:40 PM	#34
KaBoom1701 KaBoom1701 Drives: 13' ZL1 Red M6 Join Date: Dec 2012 Location: I.E. SoCal (Yucaipa) Posts: 8,631	The OEM manufactures don't put one on because it's an environment EVAP issue.... They rather recirculate that crap back into your engine for burn off then let it release into the atmosphere.... With the catch can method you are trapping the blow by oil and then you have to dispose if it. Better for performance , worse for tree huggers. __________________ Mods: Roto-Fab Intake, WW Res. kit & Big Gulp Air Scoop, Elite Catch Can, ATI Super Damper & 18% OD Pulley, LF Idler pulley bracket, Metco CC breather, ID850 Injectors, Stainless Power Headers w/ ceramic coating, TR71X Spark Plugs, JMS Fuel Pump Booster, Bo White TB, Tuned by Ted @ Jannetty Racing, Ron Davis HX, D3 Reservoir, Pfadt 1" Springs, Moreno Camber Plates, ZL1 Addons Splitter guard washers, Tow Hook kit & rock guards, Hurst Shifter Billet Plus 6 Speed Short Shifter, ZL1 DRL lighting harness, ZL1 Recaro Seats.

02-20-2015, 12:06 AM	#35
Holliss69 Drives: 2013 ZL1 Coupe A6 Join Date: Nov 2014 Location: Arizona/NY Posts: 108 View My Garage	^^^^^ Solid point as well....

02-20-2015, 12:14 AM	#36
Caswell239 Drives: 2011 2ss/rs Join Date: Nov 2011 Location: Canada Posts: 1,431	Could you technically run the line to the can and then the other just to atmosphere? And plug the line at intake?

02-20-2015, 10:05 AM	#41
unstable vic Account Suspended Drives: 2014 ZL1 Join Date: Jan 2015 Location: Long Island, NY Posts: 342	About a month after I bought my car and receiving my cars birth cirtificate, I was called by a GM ZL1 engineer who worked on developing the car. We had about a 20 minute conversation about the car. I asked many questions, some about the "common" mods done to these cars. He was very insightful and not just a cut and dry corPorate answer kind of guy. When I asked about the catch can he said it was completely unnecessary and would have no effect at all on the performance or longevity of the motor. He did stress proper break in and good quality frequent oil changes for a clean motor. I for one will take his advise and not be installing one.

02-20-2015, 10:18 AM	#42
Blueclyde Drives: 2023 ZLE Join Date: Jun 2009 Location: Detroit Posts: 1,717	No catch can and no plans to add one. I'm not looking to start a debate here but in my professional experience, it is not required.