$11.97 C6 Catch Can
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Joined: Jul 2002
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From: St. Louis, MO
St. Jude Donor '08
I had one of the Cambell Hausfeld compressor filters on my C5. Mine had a little stone in it. I am afraid the stone got clogged after a while, and on my last HPDE event with the car it started leaking oil from the front seal. One of my buddies with the same set up started leaking oil on the same day at the track. The car got stolen 4 days later so I never got to resolve the issue, and my buddy blew up his engine a month later after having the front seal replaced (unrelated to the CH filter).
I wonder if people smarter than me will chime in - I always suspected that little stone was a problem for those that track their cars. I wonder if anyone knows before I put one on my C6.
I wonder if people smarter than me will chime in - I always suspected that little stone was a problem for those that track their cars. I wonder if anyone knows before I put one on my C6.
Drifting
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From: az
Originally Posted by Zig
let me just point out, this 'catch can' is on the vent side.
however, most if the installs i have seen are using a catch can on the tb conection, not the vent.
however, most if the installs i have seen are using a catch can on the tb conection, not the vent.
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From: stafford country, va. Avatar: Me on turn 3 @ Bristol (The World's Fastest Half-Mile)
Originally Posted by cbrf4i1
zig, what do you mean by "the vent side"? it just seem like your catch can is between the intake tube and the passager side valve cover.
Originally Posted by cbrf4i1
i did this a while ago, i put a see through fuel filter in there
Originally Posted by cbrf4i1
and also one on the lower lifer valley cover to lower intake (just behind TB, this one seems to collect a lot more blow by / oil) i would be interest in your thoughts, thanks
it was my understanding that the 'other line' (the line connected to the intake ducting) was the 'vent' line. it should catch the least amount of oil mist. it was my understanding, that if too much pressure is built or if the pcv system begins to have problems one will begin to get more-and-more 'oil mist' through the vent.
if everything is working well, i shouldn't collect much via the vent, in fact i would think it should actually catch or seperate more water than oil from the line.
the 'catch can' as installed simply allows me to 'visually' see how well the internals are working.
if the 'vent' becomes blocked or flow is restricted to such a degree, water vapors will not be seperated and eventually the oil will become dilluted.
Drifting
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From: az
Originally Posted by Zig
correct
have you collected much in the 'fuel filter' ?
i collected a lot more for the one that is between lifter valley cover to the intake just down stream of TB.
it was my understanding the vacuum tube connected to the bottom of the tb connected to the pcv valve located in the valley cover. this is were most of the 'oil mist' comes from. if you catch can that hose it will collect the most 'oil mist'
it was my understanding that the 'other line' (the line connected to the intake ducting) was the 'vent' line. it should catch the least amount of oil mist. it was my understanding, that if too much pressure is built or if the pcv system begins to have problems one will begin to get more-and-more 'oil mist' through the vent.
if everything is working well, i shouldn't collect much via the vent, in fact i would think it should actually catch or seperate more water than oil from the line.
the 'catch can' as installed simply allows me to 'visually' see how well the internals are working.
if the 'vent' becomes blocked or flow is restricted to such a degree, water vapors will not be seperated and eventually the oil will become dilluted.
have you collected much in the 'fuel filter' ?
i collected a lot more for the one that is between lifter valley cover to the intake just down stream of TB.
it was my understanding the vacuum tube connected to the bottom of the tb connected to the pcv valve located in the valley cover. this is were most of the 'oil mist' comes from. if you catch can that hose it will collect the most 'oil mist'
it was my understanding that the 'other line' (the line connected to the intake ducting) was the 'vent' line. it should catch the least amount of oil mist. it was my understanding, that if too much pressure is built or if the pcv system begins to have problems one will begin to get more-and-more 'oil mist' through the vent.
if everything is working well, i shouldn't collect much via the vent, in fact i would think it should actually catch or seperate more water than oil from the line.
the 'catch can' as installed simply allows me to 'visually' see how well the internals are working.
if the 'vent' becomes blocked or flow is restricted to such a degree, water vapors will not be seperated and eventually the oil will become dilluted.
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From: stafford country, va. Avatar: Me on turn 3 @ Bristol (The World's Fastest Half-Mile)
Originally Posted by cbrf4i1
i had been thinking just capping these 4 holes up and just get a breather for the oil caps,
without a 'breather' system, the oil will milk up pretty quick (relatively speaking).
with just a filter on the oil fill there isn't any vacuum created to pull the 'vapors' out through the breather.
a plugged system with just a fiilter on the fill cap will require more freuqent oil changes.
Originally Posted by cbrf4i1
just wasn't sure if that would thrown off the A/f. (possibity of meter air/oxygen of been part of blow by)
the incoming air charge from the pcv system is 'dirtier' than the inbound air charge from the air filters and ducting and is delivered after the sensors. i suspect it would be pretty difficult to predict the airflow 'contents' from the pcv system and either add or remove clean air based soley on the inbound clean air charge, as detected by the maf.
however, here's something to ponder.
did the engineers take into account the amount of oil (vapors)that would be 'caught' when they built the engine ? one method of a 'low compression' test is to 'squirt' a small amount of oil into the chamber and retest. did the engineers take this into account when they designed the system ? did plan to use the amount of oil that normally comes through the pcv system to keep the compression, and or build it ?
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From: stafford country, va. Avatar: Me on turn 3 @ Bristol (The World's Fastest Half-Mile)
here's a relly good example of the pcv system
"A means of controlling crankcase blowby emissions and removing moisture condensation from the crankcase to prolong oil life. See PCV valve. "
"Definition: The Positive Crankcase Ventilation valve is an emissions control device that routes unburned crankcase blowby gases back into the intake manifold where they can be reburned. The PCV system is one of the oldest emission control devices, and also one of the most beneficial. Besides totally eliminating crankcase emissions as a source of air pollution, the constant recirculation of air through the crankcase helps remove moisture which otherwise would cause sludge to form. Thus the PCV valve extends the life of the oil and engine. The PCV valve requires little maintenance. The valve and filter should be replaced somewhere around 30,000 to 50,000 miles (see the vehicle owners manual for service intervals). "
http://autorepair.about.com/library/.../bldef-625.htm
http://autorepair.about.com/cs/gener.../bldef_621.htm
as the way i understand the 'system', as detailed above, the 'catch can' on the vent is soley for informational purposes. if, it begins to 'catch' alot, and i find that i'm emptying it more frequently, i be lead to believe there was something amiss in the rest of the 'system'
"A means of controlling crankcase blowby emissions and removing moisture condensation from the crankcase to prolong oil life. See PCV valve. "
"Definition: The Positive Crankcase Ventilation valve is an emissions control device that routes unburned crankcase blowby gases back into the intake manifold where they can be reburned. The PCV system is one of the oldest emission control devices, and also one of the most beneficial. Besides totally eliminating crankcase emissions as a source of air pollution, the constant recirculation of air through the crankcase helps remove moisture which otherwise would cause sludge to form. Thus the PCV valve extends the life of the oil and engine. The PCV valve requires little maintenance. The valve and filter should be replaced somewhere around 30,000 to 50,000 miles (see the vehicle owners manual for service intervals). "
http://autorepair.about.com/library/.../bldef-625.htm
http://autorepair.about.com/cs/gener.../bldef_621.htm
as the way i understand the 'system', as detailed above, the 'catch can' on the vent is soley for informational purposes. if, it begins to 'catch' alot, and i find that i'm emptying it more frequently, i be lead to believe there was something amiss in the rest of the 'system'
Instructor
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Originally Posted by Zig
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Drifting
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From: az
Originally Posted by Zig
i wouldn't recommend it.
without a 'breather' system, the oil will milk up pretty quick (relatively speaking).
with just a filter on the oil fill there isn't any vacuum created to pull the 'vapors' out through the breather.
a plugged system with just a fiilter on the fill cap will require more freuqent oil changes.
without a 'breather' system, the oil will milk up pretty quick (relatively speaking).
with just a filter on the oil fill there isn't any vacuum created to pull the 'vapors' out through the breather.
a plugged system with just a fiilter on the fill cap will require more freuqent oil changes.
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From: stafford country, va. Avatar: Me on turn 3 @ Bristol (The World's Fastest Half-Mile)
Originally Posted by yellowc6ohio
... thats the fresh air tube
i'm simply 'watching' the 'vent'. having a catch can on the vent allows me to 'see' how everything is working. if the pcv system begins to have problems i will notice more and more though the vent.
the vent is bi-directional. if it pukes you will end up with a cough of oil out the vent.
Last edited by Zig; Nov 7, 2006 at 05:17 AM.
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From: stafford country, va. Avatar: Me on turn 3 @ Bristol (The World's Fastest Half-Mile)
Originally Posted by SickRick
The plot thickens...
Where does that line come from/go to?
Rick
Where does that line come from/go to?
Rick
it is the 'main' pcv hose. where most the most oil into the intake comes from.
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From: stafford country, va. Avatar: Me on turn 3 @ Bristol (The World's Fastest Half-Mile)
Originally Posted by Joe_G
I had one of the Cambell Hausfeld compressor filters on my C5. Mine had a little stone in it. I am afraid the stone got clogged after a while ...
... I always suspected that little stone was a problem for those that track their cars. I wonder if anyone knows before I put one on my C6.
... I always suspected that little stone was a problem for those that track their cars. I wonder if anyone knows before I put one on my C6.
the catch can needs to be a free flowing design and needs to watched regularly. imo, that's why the manufacturers didn't install them to start with. catch-cans require more maintenance than the 'average' owner is willing to perform.
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From: stafford country, va. Avatar: Me on turn 3 @ Bristol (The World's Fastest Half-Mile)
Originally Posted by yellowc6ohio
wrong spot thats the fresh air tube
Drifting
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From: Ft. Liquordale Florida
Originally Posted by Zig
if it's the one i'm thinking of, it comes from the valley and enters the tb.
it is the 'main' pcv hose. where most the most oil into the intake comes from.
it is the 'main' pcv hose. where most the most oil into the intake comes from.
Then that likely is the one I want to "catch". Though if yellow6 pulled that much oil on a 425 mi highway trip - methinks I'm gonna need a bigger can.
How much oil vs time have you accumulated in the vent catchcan?
Rick
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From: St. Louis, MO
St. Jude Donor '08
Originally Posted by SickRick
Then that likely is the one I want to "catch". Though if yellow6 pulled that much oil on a 425 mi highway trip - methinks I'm gonna need a bigger can.
How much oil vs time have you accumulated in the vent catchcan?
Rick
How much oil vs time have you accumulated in the vent catchcan?
Rick
Thread Starter
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From: stafford country, va. Avatar: Me on turn 3 @ Bristol (The World's Fastest Half-Mile)
Originally Posted by SickRick
Then that likely is the one I want to "catch".
Originally Posted by SickRick
Though if yellow6 pulled that much oil on a 425 mi highway trip - methinks I'm gonna need a bigger can.
Originally Posted by SickRick
How much oil vs time have you accumulated in the vent catchcan?
Rick
Rick
Last edited by Zig; Nov 7, 2006 at 07:08 AM.
Drifting
Joined: Jul 2003
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From: Annandale VA
A catch can on the vent line will not trap or accumulate any oil at all, or provide any information either. The catch can must be on the PCV line, so that it traps the oil before it gets sucked into the TB.
I don't have one on my C6 (yet). The one on my C5 would catch about a third of a cup per 5K miles. Even with the catch can, some fumes still got into the intake. I treated my engine with Sea Foam every 10K miles, and it always produced copious amounts of smoke afterwards.
I don't have one on my C6 (yet). The one on my C5 would catch about a third of a cup per 5K miles. Even with the catch can, some fumes still got into the intake. I treated my engine with Sea Foam every 10K miles, and it always produced copious amounts of smoke afterwards.
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From: stafford country, va. Avatar: Me on turn 3 @ Bristol (The World's Fastest Half-Mile)
Originally Posted by HITMAN99
A catch can on the vent line will not trap or accumulate any oil at all, or provide any information either.
what would a vent be used for ?
what will pass through the vent ?
it is completely possible to puke out the vent.
although, i agree, if everything is working properly, one shouldn't catch much, if anything, though the vent.
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From: stafford country, va. Avatar: Me on turn 3 @ Bristol (The World's Fastest Half-Mile)
Update
Update: 4 days after install.
a couple of 110+ mph runs, some daily driving and a couple of periods of high-rpm use (held it in gear and kept the rpms in the 4-5k range).
i just checked the filter element. i've been watching it visually but this is the first time i took it apart. i unscrewed the 'can' and twisted off the filter and valve assembly. the filter is like a paper design but is solid and porous like coral. airflow though the element is basically unrestricted. one can easily pass air/smoke through the element without mass amounts of pressure. the element was clean, the can was dry but the valve had a damp, very fine mist residue.
all, in all, i would say it's working without issue. i really won't know though, until i change the oil and or remove the valve covers. as long as the vent doesn't become restricted the 'system' should continue to work as designed.
a couple of 110+ mph runs, some daily driving and a couple of periods of high-rpm use (held it in gear and kept the rpms in the 4-5k range).
i just checked the filter element. i've been watching it visually but this is the first time i took it apart. i unscrewed the 'can' and twisted off the filter and valve assembly. the filter is like a paper design but is solid and porous like coral. airflow though the element is basically unrestricted. one can easily pass air/smoke through the element without mass amounts of pressure. the element was clean, the can was dry but the valve had a damp, very fine mist residue.
all, in all, i would say it's working without issue. i really won't know though, until i change the oil and or remove the valve covers. as long as the vent doesn't become restricted the 'system' should continue to work as designed.