RX Catch Can - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Forearms · 03-18-2011, 02:30 PM

I replied to the Catch Cans!!!!! thread the other day, but haven't received a reply. So, I thought I would ask here.

Anyhow, for those of you that have purchased an RX Catch Can - did you purchase the can without the optional breather, and then purchase it at a later time to find that the amount of oil captured increased substantially?

I know any oil getting sucked into the intake is bad, but I'm not sure if the extra $40 is going to make that much of a difference. With that said, I know I'm buying a $40k car, so why do I care about the extra $40? I care because I don't want to buy something that doesn't add a significant amount of protection to the catch can system.

Let me know your thoughts. Thanks!

Nomad · 03-18-2011, 03:36 PM

The breather should have a minor to no influence on the amount of waste collected by the catch can. The breather removes the fresh air make up line from the engine air intake from the PCV system.

The engine can draw so much air from the intake that it can't keep up. This can cause the fresh air line to actually feed the crankcase vapor into the intake. Since the OEM set up actually returns all of the crankcase vapor to the intake, that's not a concern for them. We know that the vapor is bad and needs to be eliminated, so we install the catch cans on the "dirty" side of the system. The breather eliminates the possibility of vapor from the "clean" side.

Hope that made sense.

chozn4service · 03-18-2011, 04:23 PM

Quote:

Originally Posted by Nomad

The breather should have a minor to no influence on the amount of waste collected by the catch can. The breather removes the fresh air make up line from the engine air intake from the PCV system.

The engine can draw so much air from the intake that it can't keep up. This can cause the fresh air line to actually feed the crankcase vapor into the intake. Since the OEM set up actually returns all of the crankcase vapor to the intake, that's not a concern for them. We know that the vapor is bad and needs to be eliminated, so we install the catch cans on the "dirty" side of the system. The breather eliminates the possibility of vapor from the "clean" side.

Hope that made sense.

As explained to me and I expect my breather any day now:

--------------------------------------------------------------------------------

There are 2 paths of oil ingestion into the intake air charge. The most problem area is the PCV connection that you take care of with a catch can.
The other is the fresh air tube for the crankcase make up air. At WOT when there is little to no vacuum in the intake manifolds the oil vapors back-flow into the intake air bridge and contaminate that way. It is not nearly the amount that the PCV causes, but any oil is bad as it causes detonation and long term engine damage.

The breather eliminates this path completely and also is the only one on the market with an integrated checkvalve that prevents vapors from venting into the engine compartment.

Nomad · 03-18-2011, 04:37 PM

Quote:

Originally Posted by chozn4service

As explained to me and I expect my breather any day now:

--------------------------------------------------------------------------------

There are 2 paths of oil ingestion into the intake air charge. The most problem area is the PCV connection that you take care of with a catch can.
The other is the fresh air tube for the crankcase make up air. At WOT when there is little to no vacuum in the intake manifolds the oil vapors back-flow into the intake air bridge and contaminate that way. It is not nearly the amount that the PCV causes, but any oil is bad as it causes detonation and long term engine damage.

The breather eliminates this path completely and also is the only one on the market with an integrated checkvalve that prevents vapors from venting into the engine compartment.

That's what I was trying to say!

Thanks.

Stingr69 · 03-18-2011, 05:09 PM

I will go out on a limb here - The aftermarket breather you could add might allow more make up air to flow into the catch can side than the OEM setup originally did. You could begin flowing more air through the PCV system and collecting more vapor laden oily droplets SOOO now you are catching more in the can.

If you did not add the breather cap, you would not have collected so much crud BUT you don't really need to remove that much crud in the first place. You just want to remove the bulk of what would end up in the intake and get burned otherwise. You can do that without the added breather. Keeping (most of) the crud out of the intake is all you are trying to do here.

The breather will allowing excess crancase pressure (beyond what the PCV system would handle) to be exhausted to the environment. This IS a viloation of tree hugger laws but who is really checking?

When you are foot to the floor, the aftermarket breather would allow excess blow-by to get out of the engine. This is good because it prevents the excess pressure from going backwards into the PCV make-up air tract where it would be burned in the intake tract AND the breather prevents the crankcase pressure from pushing out the engine seals and leaking oil all over the place.

The 2 pipe catch can by itself will work fine under cruise and light load which is really most of the time. Only at WOT will the catch can check valve block the flow and potentially cause the vapors to back up into the make-up intake tract. Not all that often in my opinion.

Personally - I would not use the breather. The extra crud under WOT is not enough to worry about. If you are that concerned you could use the 3 tap RX can and plumb it for both sides.

-Mark.

Forearms · 03-18-2011, 06:22 PM

Excellent, thanks for the feedback everyone! I had forgotten what I had read about the breather and how it played into the system under WOT, which I don't intend to run this car at WOT all day long (although it would be nice

).

Thanks again!

jagan323 · 03-19-2011, 01:53 AM

http://spadesv6.blogspot.com/2011/01/rx-breather.html

http://spadesv6.blogspot.com/2010/12...catch-can.html

Hope these help with any info u need.

hitz587 · 03-22-2011, 10:42 AM

to answer your question about the breather....

Quote:

Originally Posted by chozn4service

As explained to me and I expect my breather any day now:

--------------------------------------------------------------------------------

There are 2 paths of oil ingestion into the intake air charge. The most problem area is the PCV connection that you take care of with a catch can.
The other is the fresh air tube for the crankcase make up air. At WOT when there is little to no vacuum in the intake manifolds the oil vapors back-flow into the intake air bridge and contaminate that way. It is not nearly the amount that the PCV causes, but any oil is bad as it causes detonation and long term engine damage.

The breather eliminates this path completely and also is the only one on the market with an integrated checkvalve that prevents vapors from venting into the engine compartment.

hitz587 · 03-22-2011, 10:45 AM

oh damn, my browser didn't load any of these responses. EVERY possible question about the breather is now answered lol this forum is amazing

jeff4946 · 03-22-2011, 11:32 AM

Where the hell are we finding this catch can for 40 bucks?

SC2150 · 03-22-2011, 12:24 PM

The RX breather has a oneway checkvalve so it does not allow vapors to escape into the air and it also controls the amount of fresh make up air to what the OEM line should. Only one were aware of that does.

Orders have been delayed due to checkvalves on back order but just got a batch in so we should be catching up quickly. Appologies to all that are waiting.

Oh, I'm not aware of any $40 can that will do a good job....best to get a good one like the Mike Norris, RX, or Elite. My top choices of the vendor offerings on here.

chozn4service · 03-22-2011, 12:43 PM

Quote:

Originally Posted by SC2150

The RX breather has a oneway checkvalve so it does not allow vapors to escape into the air and it also controls the amount of fresh make up air to what the OEM line should. Only one were aware of that does.

Orders have been delayed due to checkvalves on back order but just got a batch in so we should be catching up quickly. Appologies to all that are waiting.

Oh, I'm not aware of any $40 can that will do a good job....best to get a good one like the Mike Norris, RX, or Elite. My top choices of the vendor offerings on here.

Any word on how my breather shipped and a track number. Just trying to see when I can expect it.

Thanks!

Blk-Ice · 03-22-2011, 12:45 PM

I have a question that no one can seem to answer. I have a RX catch can installed with the breather. I checked under my hood after a 4 hr trip and i saw what looked like a light oily substance below and to the rear of my catch can. I checked the can and it has no leaks and its bone dry on the outside. I cant seem to figure out where this stuff came from. My car only has like 9000 miles and it will be a year old in May. Any ideas what this could be?! Any ideas appreciated...thanks! Oh and its 2SS/RS manual.

Stingr69 · 03-22-2011, 12:46 PM

OK - if the breather has an "intake only" check valve you probably don't want to run that breather setup on a boosted car. Where would the blow-by gas pressure go when the car is under boost? Answer - Out the gaskets and seals, along with the engine oil.

It can't go out the can because it has a check valve and the breather does too? Might be better off letting it flow back into the intake under boost?!? At least it would not blow out all over the seals and gaskets.

I know there are 2-way catch cans but some tuners are selling the regular catch can along with the breather. That can't be a good setup. :(

-Mark.

jeff4946 · 03-22-2011, 12:46 PM

Are these a universal fit? I have been searching all morning for one that is built for the 3.6, with no luck. I'm interested only for the fact that oil contamination could cause detonation, and I run nitrous.

Blk-Ice · 03-22-2011, 01:20 PM

Quote:

Originally Posted by Stingr69

OK - if the breather has an "intake only" check valve you probably don't want to run that breather setup on a boosted car. Where would the blow-by gas pressure go when the car is under boost? Answer - Out the gaskets and seals, along with the engine oil.

It can't go out the can because it has a check valve and the breather does too? Might be better off letting it flow back into the intake under boost?!? At least it would not blow out all over the seals and gaskets.

I know there are 2-way catch cans but some tuners are selling the regular catch can along with the breather. That can't be a good setup. :(

-Mark.

was this is response to what i asked? If so i have the RX can with the dual check valves. and I'm not boosted.

Stingr69 · 03-22-2011, 01:49 PM

Quote:

Originally Posted by Blk-Ice

was this is response to what i asked? If so i have the RX can with the dual check valves. and I'm not boosted.

Sorry - no. I was responding to SC2150.

-Mark.

jeff4946 · 03-22-2011, 03:10 PM

Quote:

Originally Posted by jeff4946

Are these a universal fit? I have been searching all morning for one that is built for the 3.6, with no luck. I'm interested only for the fact that oil contamination could cause detonation, and I run nitrous.

o, I hate it when I kill a thread

PoorMansCamaro · 03-22-2011, 04:32 PM

Quote:

Originally Posted by jeff4946

Where the hell are we finding this catch can for 40 bucks?

the RX breather is $40, not the can

Quote:

Originally Posted by jeff4946

o, I hate it when I kill a thread

pm SC2150 and tell him you want a can (and breather if you want) for your v6. there's a special bracket that he'll send you. You can also get it color matched to your factory paint, or matte black, or polished i believe.

PoorMansCamaro · 03-22-2011, 04:33 PM

Quote:

Originally Posted by SC2150

The RX breather has a oneway checkvalve so it does not allow vapors to escape into the air and it also controls the amount of fresh make up air to what the OEM line should. Only one were aware of that does.

Orders have been delayed due to checkvalves on back order but just got a batch in so we should be catching up quickly. Appologies to all that are waiting.

Oh, I'm not aware of any $40 can that will do a good job....best to get a good one like the Mike Norris, RX, or Elite. My top choices of the vendor offerings on here.

Patiently waiting for 3 weeks!

jeff4946 · 03-22-2011, 04:47 PM

Quote:

Originally Posted by PoorMansCamaro

the RX breather is $40, not the can

pm SC2150 and tell him you want a can (and breather if you want) for your v6. there's a special bracket that he'll send you. You can also get it color matched to your factory paint, or matte black, or polished i believe.

right on!

PoorMansCamaro · 03-22-2011, 04:52 PM

oh, and tell him you run nitrous.

edgehead2000 · 03-22-2011, 10:19 PM

Quote:

Originally Posted by chozn4service

There are 2 paths of oil ingestion into the intake air charge. The most problem area is the PCV connection that you take care of with a catch can.
The other is the fresh air tube for the crankcase make up air. At WOT when there is little to no vacuum in the intake manifolds the oil vapors back-flow into the intake air bridge and contaminate that way. It is not nearly the amount that the PCV causes, but any oil is bad as it causes detonation and long term engine damage.

The breather eliminates this path completely and also is the only one on the market with an integrated checkvalve that prevents vapors from venting into the engine compartment.

Since we are replacing the 'Fresh Air Tube' with a breather, do we really need that extra hose?

I was reading somewhere on this forum that it may not affect V6's as much as V8's if we were to keep the fresh air hose and include a breather.

Thought I'd ask before I mess something up.

Nomad · 03-23-2011, 05:40 AM

Quote:

Originally Posted by edgehead2000

Since we are replacing the 'Fresh Air Tube' with a breather, do we really need that extra hose?

I was reading somewhere on this forum that it may not affect V6's as much as V8's if we were to keep the fresh air hose and include a breather.

Thought I'd ask before I mess something up.

Yes, you must remove the 'Fresh Air Tube' if you install a breather. If you add the breather without removing the fresh air hose, you have a path into your intake that bypasses your MAF sensor. (Breather->valve cover->fresh air hose->intake). Since your Engine Control Module doesn't include this air in calculating how much fuel to inject into the cylinder, it will cause your engine to run too lean.

PoorMansCamaro · 03-23-2011, 08:18 AM

ok, might be a dumb question...where is the 'Fresh Air Tube'. any one have a pic?

03-18-2011, 02:30 PM	#1
Forearms Drives: 2011 2SS/RS IOM/IOM M6 Join Date: Nov 2010 Location: Lake Stevens, WA Posts: 180	RX Catch Can I replied to the Catch Cans!!!!! thread the other day, but haven't received a reply. So, I thought I would ask here. Anyhow, for those of you that have purchased an RX Catch Can - did you purchase the can without the optional breather, and then purchase it at a later time to find that the amount of oil captured increased substantially? I know any oil getting sucked into the intake is bad, but I'm not sure if the extra $40 is going to make that much of a difference. With that said, I know I'm buying a $40k car, so why do I care about the extra $40? I care because I don't want to buy something that doesn't add a significant amount of protection to the catch can system. Let me know your thoughts. Thanks! __________________ The wait is over!!! 03/10/2011 - (1100) : 03/10/2011 - (1102) : 03/15/2011 - (2000) 03/15/2011 - (2500) : 03/15/2011 - (3000) : 03/19/2011 - (3100) 03/19/2011 - (3300) - TPW 3/28/11 03/22/2011 - (3300) : 03/22/2011 - (3100) : 03/22/2011 - (3100) - Hiccup... 03/24/2011 - (3400) : 03/30/2011 - (3800) - She's alive!!! 03/30/2011 - (4000) : 03/30/2011 - (4150) : 03/31/2011 - (4B00) 04/02/2011 - (4200) - Dealer says ETA of 4/15!!! 04/12/2011 - (4B00) 04/12/2011 - (4800) - Unloaded from the train!!! 04/12/2011 - TOOK DELIVERY - THAT WAS FAST!!!

03-18-2011, 03:36 PM	#2
Nomad Drives: '11 2SS/RS RJT M6 Join Date: Oct 2010 Location: Grounded in the 'Shwa Posts: 493 View My Garage	The breather should have a minor to no influence on the amount of waste collected by the catch can. The breather removes the fresh air make up line from the engine air intake from the PCV system. The engine can draw so much air from the intake that it can't keep up. This can cause the fresh air line to actually feed the crankcase vapor into the intake. Since the OEM set up actually returns all of the crankcase vapor to the intake, that's not a concern for them. We know that the vapor is bad and needs to be eliminated, so we install the catch cans on the "dirty" side of the system. The breather eliminates the possibility of vapor from the "clean" side. Hope that made sense. __________________ Vararam CAI, Elite Engineering Catch Can, Separate Clutch Fluid Reservoir, Ghost Armor Full Protection Package, Chromed Turn Signal Bulbs, RPI Stealth Splash Guards, Skip Shift Eliminator, Defenderworx Chrome Bowtie Inserts, Pfadt Trailing Arms, Camaro Decal Store CGM Hood Spears with "376ci" custom text, Billet Depot/Drake Underhood Polished Caps, CGM Lug Nut Decals, Pedders Front Radius Rod Inserts, JacFab Front License Plate Bracket

03-18-2011, 06:22 PM	#6
Forearms Drives: 2011 2SS/RS IOM/IOM M6 Join Date: Nov 2010 Location: Lake Stevens, WA Posts: 180	Excellent, thanks for the feedback everyone! I had forgotten what I had read about the breather and how it played into the system under WOT, which I don't intend to run this car at WOT all day long (although it would be nice ). Thanks again! __________________ The wait is over!!! 03/10/2011 - (1100) : 03/10/2011 - (1102) : 03/15/2011 - (2000) 03/15/2011 - (2500) : 03/15/2011 - (3000) : 03/19/2011 - (3100) 03/19/2011 - (3300) - TPW 3/28/11 03/22/2011 - (3300) : 03/22/2011 - (3100) : 03/22/2011 - (3100) - Hiccup... 03/24/2011 - (3400) : 03/30/2011 - (3800) - She's alive!!! 03/30/2011 - (4000) : 03/30/2011 - (4150) : 03/31/2011 - (4B00) 04/02/2011 - (4200) - Dealer says ETA of 4/15!!! 04/12/2011 - (4B00) 04/12/2011 - (4800) - Unloaded from the train!!! 04/12/2011 - TOOK DELIVERY - THAT WAS FAST!!!

03-19-2011, 01:53 AM	#7
jagan323 I have no life Drives: 06' Subaru STI, ex-Camaro V6 LLT Join Date: Apr 2010 Location: Top Gear Test Track Posts: 3,229	http://spadesv6.blogspot.com/2011/01/rx-breather.html http://spadesv6.blogspot.com/2010/12...catch-can.html Hope these help with any info u need. __________________ List of Camaro DIY The Blog

03-22-2011, 11:32 AM	#10
jeff4946 Drives: 2010 RS 2LT Join Date: Jan 2011 Location: slc, utah Posts: 659 View My Garage	Where the hell are we finding this catch can for 40 bucks? __________________ K&N Cai, BSR Ported intake, MBRP catback, BBK long tubes, VMax throttle body, 3.73 SS gears, Zex nitrous 125hp shot, window switch, purge,remote bottle opener, bottle heater, Trifecta tune, Hurst short throw, RX catch can, Intake isolator, Ported Intake manifold

03-18-2011, 05:09 PM	#5
Stingr69 '69 Owned Since '79 Drives: '69 Z/28 LeMans Blue w/White Join Date: Oct 2008 Location: LR AR Posts: 1,417 View My Garage	I will go out on a limb here - The aftermarket breather you could add might allow more make up air to flow into the catch can side than the OEM setup originally did. You could begin flowing more air through the PCV system and collecting more vapor laden oily droplets SOOO now you are catching more in the can. If you did not add the breather cap, you would not have collected so much crud BUT you don't really need to remove that much crud in the first place. You just want to remove the bulk of what would end up in the intake and get burned otherwise. You can do that without the added breather. Keeping (most of) the crud out of the intake is all you are trying to do here. The breather will allowing excess crancase pressure (beyond what the PCV system would handle) to be exhausted to the environment. This IS a viloation of tree hugger laws but who is really checking? When you are foot to the floor, the aftermarket breather would allow excess blow-by to get out of the engine. This is good because it prevents the excess pressure from going backwards into the PCV make-up air tract where it would be burned in the intake tract AND the breather prevents the crankcase pressure from pushing out the engine seals and leaking oil all over the place. The 2 pipe catch can by itself will work fine under cruise and light load which is really most of the time. Only at WOT will the catch can check valve block the flow and potentially cause the vapors to back up into the make-up intake tract. Not all that often in my opinion. Personally - I would not use the breather. The extra crud under WOT is not enough to worry about. If you are that concerned you could use the 3 tap RX can and plumb it for both sides. -Mark.

03-22-2011, 10:45 AM	#9
hitz587 Drives: Summit White 1LT RS Join Date: Jun 2010 Location: Northern NJ Posts: 42 View My Garage	oh damn, my browser didn't load any of these responses. EVERY possible question about the breather is now answered lol this forum is amazing

03-22-2011, 12:24 PM	#11
SC2150 Drives: 2001 Camaro SS Join Date: Dec 2009 Location: Bradenton, FL Posts: 8,037	The RX breather has a oneway checkvalve so it does not allow vapors to escape into the air and it also controls the amount of fresh make up air to what the OEM line should. Only one were aware of that does. Orders have been delayed due to checkvalves on back order but just got a batch in so we should be catching up quickly. Appologies to all that are waiting. Oh, I'm not aware of any $40 can that will do a good job....best to get a good one like the Mike Norris, RX, or Elite. My top choices of the vendor offerings on here.

03-22-2011, 12:45 PM	#13
Blk-Ice 750HP of Twisted Reaper! Drives: Blk 2SS with Gun metal Gray Stripes Join Date: Oct 2010 Location: Northern VA & NC Posts: 1,319 View My Garage	I have a question that no one can seem to answer. I have a RX catch can installed with the breather. I checked under my hood after a 4 hr trip and i saw what looked like a light oily substance below and to the rear of my catch can. I checked the can and it has no leaks and its bone dry on the outside. I cant seem to figure out where this stuff came from. My car only has like 9000 miles and it will be a year old in May. Any ideas what this could be?! Any ideas appreciated...thanks! Oh and its 2SS/RS manual. __________________ "Life is a warzone...Adapt, Evolve, Never surrender!" *Fear the LMR Twisted Reaper Brotherhood!*

03-22-2011, 12:46 PM	#14
Stingr69 '69 Owned Since '79 Drives: '69 Z/28 LeMans Blue w/White Join Date: Oct 2008 Location: LR AR Posts: 1,417 View My Garage	OK - if the breather has an "intake only" check valve you probably don't want to run that breather setup on a boosted car. Where would the blow-by gas pressure go when the car is under boost? Answer - Out the gaskets and seals, along with the engine oil. It can't go out the can because it has a check valve and the breather does too? Might be better off letting it flow back into the intake under boost?!? At least it would not blow out all over the seals and gaskets. I know there are 2-way catch cans but some tuners are selling the regular catch can along with the breather. That can't be a good setup. :( -Mark.

03-22-2011, 04:52 PM	#22
PoorMansCamaro Drives: Really Slow Join Date: Apr 2010 Location: Charleston, SC Posts: 44,162	oh, and tell him you run nitrous. __________________

03-23-2011, 08:18 AM	#25
PoorMansCamaro Drives: Really Slow Join Date: Apr 2010 Location: Charleston, SC Posts: 44,162	ok, might be a dumb question...where is the 'Fresh Air Tube'. any one have a pic? __________________

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