Removal of Charcoal Canisters (fuel tank vents) okay?

Very cool, useful because my canister is in the way of my new high capacity filter.

I know aquarium supply places have smaller check valves, any input on their suitability? The evap line on my Civic is 5/16 or maybe a little smaller.
 
webhound said:
Very cool, useful because my canister is in the way of my new high capacity filter.

I know aquarium supply places have smaller check valves, any input on their suitability? The evap line on my Civic is 5/16 or maybe a little smaller.
Click to expand...

I know it said check valve but really what we need is an excess flow valve. Or perhaps a tip over valve like http://m.summitracing.com/parts/sum-220020

I am thinking the over sized ball check will let vapor out but will stop the gas if the car turns over.
 
tom91ita said:
I know it said check valve but really what we need is an excess flow valve. Or perhaps a tip over valve like http://m.summitracing.com/parts/sum-220020

I am thinking the over sized ball check will let vapor out but will stop the gas if the car turns over.
Click to expand...

precisely the idea - let vapors out but keep liquid fuel in. a ball under a conical seat is the typical design, that's what many of the fuel cell roll over valved vents use.

fuel safe makes a good 3/8" in-line roll over valve available from any fuel safe dealer. it's PN RV38. good for guys keeping their stock tanks and plumbing where a valve made for a cell is harder to implement.
 
Adam,

Lane carries those Fuel Safe RV38's that Chris mentioned.

I think i will get one there likely next trip to Chicago.

Maybe St. Patrick's Day?
 
Thanks for the update. I too had originally, by not so careful rules reading, removed the charcoal canister from my '87 16V. After everyone pointed out the error of this thinking I put it back in. Now I can officially remove it, non-trivial weight:)

What isn't explicitly clear to me about these suggested check/vent valve solutions is the mounting requirements.
http://www.summitracing.com/parts/abt-tf350
http://m.summitracing.com/parts/sum-220020
http://www.fuelsafe.com/store/vent-check-valves/rv38.html

Assuming that most cars are generally the same, some kind of plastic vent line from the tank to the charcoal/carbon canister, and the carbon canister can be packaged in any orientation, as can the hose between the fuel tank and canister, what are the installation requirements for these devices so they function correctly? Do the first two have to be installed vertically to function correctly? The Fuel Safe Vent Check Valve can be installed in any orientation, but it may not be advisable to install it in the engine compartment if that was where the OEM charcoal canister was mounted, since venting fuel vapors underhood might not be such a good idea......
 
GTIspirit said:
Thanks for the update. I too had originally, by not so careful rules reading, removed the charcoal canister from my '87 16V. After everyone pointed out the error of this thinking I put it back in. Now I can officially remove it, non-trivial weight:)

What isn't explicitly clear to me about these suggested check/vent valve solutions is the mounting requirements.
http://www.summitracing.com/parts/abt-tf350
http://m.summitracing.com/parts/sum-220020
http://www.fuelsafe.com/store/vent-check-valves/rv38.html

Assuming that most cars are generally the same, some kind of plastic vent line from the tank to the charcoal/carbon canister, and the carbon canister can be packaged in any orientation, as can the hose between the fuel tank and canister, what are the installation requirements for these devices so they function correctly? Do the first two have to be installed vertically to function correctly? The Fuel Safe Vent Check Valve can be installed in any orientation, but it may not be advisable to install it in the engine compartment if that was where the OEM charcoal canister was mounted, since venting fuel vapors underhood might not be such a good idea......
Click to expand...

the first 2 you linked are cell vents and will be a pain to mount on a line. in both cases the long end would be down into the cell. the fuel save RV38 MUST be mounted vertically, it's not a disriminatory valve, just a ball in a cone. mount it so the cone points roughly UP then the line will choke in a rollover. I mounted mine on the fire wall with an extension line after the valve venting out to a fender
 
EV said:
My Nissan has one already at the tank OEM (I saw it in the fuel system diagram)
Click to expand...

quite a few cars do, which is really why the new rule was approved. forcing the bulk of competitors to fit additional equipment was not the intention, I figure maybe 1/3 of current IT cars will actually need to add something.
 
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