I need to vent.........

Discussion in '1947-1954' started by mobileortho, Jan 10, 2009.

  1. mobileortho

    mobileortho Member

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    Or do I? I'm trying to determine if I need to run a vent line to my underbed tank. I went with the bed fill spout and the illustrations I've seen show the spout attached directly to the tank via a short hose, but there is no provision on the spout itself for the vent as it is on the stock unit. Is there another way to run a vent line or is it really necessary? There is also an additional outlet on the opposite side of the tank that I don't know what its used for. Someone suggested that it was there to relieve pressure buildup, but how do you go about doing that?
     
  2. 4JSAToo

    4JSAToo Member

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    I think all you need is a vented cap...
    Bob
     
  3. mobileortho

    mobileortho Member

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    Not with this setup.
     
  4. ol' chebby

    ol' chebby Member

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    Nah, that spout is big enough that the gas can get in and the air can get out. No vent neccessary.
     
  5. vwnate1

    vwnate1 Member

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    Fuel Tank Vents

    I disagree ~ use the 1/2" hose nipple next to the filler on that tank and run a long hose or pipe up so it's a goodly bit higher at it's top end .

    I see lots of these bung typ fillers leak like sieves after a while of service .

    An unvented fuel tank is a dangerous thing , just waiting it's chance to kill you .
     
  6. Steve Katzman

    Steve Katzman Member

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    Burbing

    I'm with Nate, no vent and you will all ways run the chance that an air pocket will be formed and your filler nozzle will burp. Getting washed with gas might not be a good thing. (And with today's automatic filler nozzels I'm not sure if they will react fast enough)
     
  7. brit 50

    brit 50 Member

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    Fuel

    Two things, is that a return line from injection next to filler neck?, if it is does it have a tube inside tank to bottom of tank, if not you will have fuel splashing into the tank causing vapor build up, and a smell of fuel around your truck, you must have a vent, that cap you have is a boat filler cap and is un-vented, on a hot day you wont believe how much pressure can build up in a non vented tank!! very dangerous.
     
  8. mobileortho

    mobileortho Member

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    Yep, that's a return line. Thanks for the heads up on running it to the inside of the tank. There is a larger opening beside the fuel inlet that I can route the return line down into the tank.
     
  9. mobileortho

    mobileortho Member

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    I think I've got it

    OK, I think I figured it out. I found this vent tube off of a late model fuel spout. It has a a cap on the end that allows pressure to bleed off as needed. Is it ok for me to mount it on the spout as shown and run the other end to the opposite side of the tank?
     
  10. ol' chebby

    ol' chebby Member

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    I thought those were vented caps. If not, make shure you run the vent up higher than the fill cap so you don't have a leak when you fill 'er up to the top.
     
  11. willardgreen

    willardgreen Member

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    Dang it Robert! I was hoping you would use the original filler spot and run a line to the tank.
     
  12. mobileortho

    mobileortho Member

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    It would have been really cool to have done it that way but the gas would have had ro run uphill to get into the tank!:(
     
  13. Bill Hanlon

    Bill Hanlon Member

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    You could carry a floor jack around in the bed all the time and jack the proper corner of the truck up when necessary to fill the tank.

    No! Wait! You're not Ken.
     
  14. Zig

    Zig Member

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    Shots fired!!!:eek:

    :D
     
  15. willardgreen

    willardgreen Member

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    Double dang it. Even in the hills of North Miss. most gas stations are flat. You could put on air ride like Ol' Chebby has. The rear gas tank take up the place for a spare tire. Has anyone did a side rail tank? The optional side mount spare would solve the spare problem if you are planning to repaint. I did not like the side mounts as a kid because I could not ride the running board on that side. Grand dads driveway was 1/2 mile dirt road. We would ride the running board or sit 3 across the tailgate and drag sticks on the road. Grandaddy drove so slow if you fell off the tailgate we could run, catch up and jump back on. If we lost a little skin we were more careful next time.
     

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  16. Larrys 48

    Larrys 48 Member

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    Nice photos. Thanks.
     

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