Charcoal Cannister Removal (emissions removal)
11-03-07, 10:17 AM
#26
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Just skimmed the thread so sorry if someone posted this idea.
Why not connect the gas tank vent tube (the one that goes to the charcoal canister) to the intake tube pre-turbo. The amount of gas would be minimal so it would only SLIGHTLY rich'n the mix. Normally (as with carb suck through setups) gas would condense in the intercooler and could cause the vapors to explode... but again the amount of gas would be very low. This would not gid rid of the smells completely im sure but it would def help.
Whatca think?
Why not connect the gas tank vent tube (the one that goes to the charcoal canister) to the intake tube pre-turbo. The amount of gas would be minimal so it would only SLIGHTLY rich'n the mix. Normally (as with carb suck through setups) gas would condense in the intercooler and could cause the vapors to explode... but again the amount of gas would be very low. This would not gid rid of the smells completely im sure but it would def help.
Whatca think?
11-03-07, 10:24 AM
#27
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You could run a line from the fuel tank vent to the air box, so the fumes will just be burn off in the engine. And clamp a crankcase filter/ breather on the crankcase vent.
12-08-07, 12:35 AM
#28
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Same difference. Connect the input side of the canister as you normally would (to the hardpipe on the firewall that goes to the fuel tank). Connect the output to the nipple on the center iron. T into that line at the canister and connect to a filtered air source after the AFM/intake. From the nipple on the oil filler tube, connect to the big nipple on the bottom of the purge value. The small bottom nipple goes to a nipple on the intake before the throttle body (fresh air nipple). The nipple on the top goes to a vacuum source.
This is the stock configuration.
This is the stock configuration.
I was going through the FSM for the Series 5 turbo and noticed the vacuum diagram indicates the line between the cannister+top oil filler
nipple and TID has a one way valve which points in the direction of the TID. Doesn't this mean there would be no air passing through the
valve towards the cannister but there would be a vacuum where the vapors from the top nipple+cannister would be sucked through the turbo and
eventually into the dynamic chamber? I was thinking of blocking off the top oil filler nipple and running my line from the charcoal cannister to the
large bottom hose of the PCV via a T which also connects to the centre plate nipple.
Also I have obtained a charcoal cannister from a Series 4 NA and it seems the larger nipple goes to the fuel tank and the smaller one is used
for purging duties. Can anyone confirm this? I blew some air into the larger nipple and it flows fairly easy throughout the cannister. However the smaller
nipple does not allow any air in. Would this be right?
Cheers,
KC
12-08-07, 11:19 AM
#29
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I was going through the FSM for the Series 5 turbo and noticed the vacuum diagram indicates the line between the cannister+top oil filler
nipple and TID has a one way valve which points in the direction of the TID. Doesn't this mean there would be no air passing through the
valve towards the cannister but there would be a vacuum where the vapors from the top nipple+cannister would be sucked through the turbo and
eventually into the dynamic chamber?
nipple and TID has a one way valve which points in the direction of the TID. Doesn't this mean there would be no air passing through the
valve towards the cannister but there would be a vacuum where the vapors from the top nipple+cannister would be sucked through the turbo and
eventually into the dynamic chamber?
I was thinking of blocking off the top oil filler nipple and running my line from the charcoal cannister to the
large bottom hose of the PCV via a T which also connects to the centre plate nipple.
large bottom hose of the PCV via a T which also connects to the centre plate nipple.
Also I have obtained a charcoal cannister from a Series 4 NA and it seems the larger nipple goes to the fuel tank and the smaller one is used
for purging duties. Can anyone confirm this? I blew some air into the larger nipple and it flows fairly easy throughout the cannister. However the smaller
nipple does not allow any air in. Would this be right?
for purging duties. Can anyone confirm this? I blew some air into the larger nipple and it flows fairly easy throughout the cannister. However the smaller
nipple does not allow any air in. Would this be right?
12-08-07, 07:28 PM
#30
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The check valve leading to the TID has me confused. The arrow points in the direction of the TID. This will mean the compressor will suck up oil droplets
and fuel vapors from the cannister. The air flows in one direction and that is towards the TID not towards the oil filler neck. The check valve is put in there
I assume to prevent any air blowing back toward the cannister and oil filler neck under boost. I understand what you mean Aaron however why would there
be a check valve with its arrow pointing towards the TID if what you are saying is correct? This will mean air will flow towards the TID not the cannister.
Oil droplets will be drawn in to the compressor. Again it confuses me but that is what I can come up with.
and fuel vapors from the cannister. The air flows in one direction and that is towards the TID not towards the oil filler neck. The check valve is put in there
I assume to prevent any air blowing back toward the cannister and oil filler neck under boost. I understand what you mean Aaron however why would there
be a check valve with its arrow pointing towards the TID if what you are saying is correct? This will mean air will flow towards the TID not the cannister.
Oil droplets will be drawn in to the compressor. Again it confuses me but that is what I can come up with.
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