catch can for fuel system???

[CRSMP5]

ok.. may be a odd thing to think of, process so on... but i have a issue i need to resolve on my toaster.. due to being a "low floor" the tank is pretty low.. sadly the filler neck is also.. and the way the vent system vs fill pipe makes it worse..

the issue... 20+min to fill up cause you gotta go real slow (sadly due to new LS fuel some nozzles do not have a "slow" on the pump...).. too fast it burps and blows fuel out at you..

my idea... build a 2gal catch can in the wheel well of my toaster.. i could in theory make it even bigger.. lots of room..

questions i ponder though...

fill catch can with some steel/nylon/chorboy mesh.. to help break down the foam into liquid??

make it into say 4 segments/chambers so as 1 fills with foam it has to go thru 3 more before getting returned to filler neck??

i am open for thoughts, suggestions.. the foam issue sux arss...

p.s. i will have a valve on the bottom of this.. so when it fills up with fuel it can be used as a reserve to dump into the main tank.. which i am also going to redesign from 10 gal to 20 gal.. did the measurements and got the room.. but sadly no good vent reconstruction though..

[R.O.R-2.0]

i smell what you are steppin in.. and i dont see why that wouldnt work fine?

as long as you have the room to do it that is. and you said you had plenty of room to play with..

[CRSMP5]

well the can can be 10" deep, 15" tall, and 7" long (still hidden by quarterpanel).. that all into cubic in and converted to gal is ~4.5gal.. LOL.. losses for mesh type material and such.. id expect min 2 gal... but the real question is.. will something like mesh work or be waste of time.. id love a way to turn the foam into liquid fast... or at min a way to help it along quicker..

[745 turbogreasel]

Use an '80s Ford fill tube an option?

[CRSMP5]

fill tube is not the issue.. tank to aluminum i beam is... the fill hole is on the bottom 1/3rd of the tank... other 2/3rd has to push air out the vent to fill the tank... vent = foam..

[R.O.R-2.0]

fill tube is not the issue.. tank to aluminum i beam is... the fill hole is on the bottom 1/3rd of the tank... other 2/3rd has to push air out the vent to fill the tank... vent = foam..

and you cant build something that fills more from the top?

[CRSMP5]

sadly unless i bore a 2-3" hole thru the aluminum I beam that sadly tank fill area is in the middle of the leaf spring mounts.. no.. and i worry borring a hole thru a aluminum I beam may weaken it to crack over time... due to the suspention mounting...

its just a crappy design on the low floor... high floor lacks this issue and has a 25 gal tank.. LOL..

[bajacalal]

To fill my Golf I use one of those large racing style fuel jugs that have the long, clear hose, you know, the ones that people who ride dirt bikes like to use. It's fast and doesn't spill any fuel.

I do this more as a matter of convenience (although some of the "fast" pumps do cause the tank to burp fuel on my car) so I don't have to go to the gas station twice since I own two vehicles and because stations that sell diesel at reasonable prices are few and far between. I fill the can when I fill up my truck. I can keep my VW going just from the 5 or so extra gallons I buy when I fuel my truck.

[CrazyAndy]

Could an additional fuel vent line or larger vent line aid in any way, or is the concern that the filler neck has insufficient diameter to 'push' the fuel into the rest of the tank, causing the neck to back up?  Seriously, the low-slung filler location sounds like a big hurdle.

Funny thing is I once owned a 72 super beetle with the exact same problem; fuel would kick back as it got full and had to keep pumping again and again.  Never fixed it b4 I wrecked it, but always thought cleaning or replacing the vent lines would cure it.  You've made sure your vent lines are unobstructed?

[CRSMP5]

vents work... squirt out all kinds of foam... can see it.. that foam then shoots out at ya... got the pinky sized hose as is... just bad design.. adding a 2nd vent has entered my mind.. but will only do same thing... moving the neck up on tank is only real cure unless catch can idea works..

[CrazyAndy]

Well crap, catch can sounds like the only way then.  I would put some mesh in it to help neutralize the foam.  That is a really good idea, and one of the reasons that racers use it in their fuel cells.

[theman53]

I have a bronco that I would only try to fill it if the station had some sort of hill. I would park it basically side ways to make sure the fuel would try to fall in better. The tank was almost level and it would take the better part of a day to fill it on the flat. Would anything like that help or not?

[CRSMP5]

might would... but parking lots are made flat and it would have to tilt the drivers side up vs front/back..

[theman53]

Maybe try to pull up on the safety cement barrier with on wheel LOL

[CRSMP5]

but thats where i sit for my 30min fill up...