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fool lines

Discussion in 'Flat Fender Tech' started by sammy, Apr 5, 2009.

  1. Apr 5, 2009
    sammy

    sammy Coca-Cola?

    Albuquerque, NM
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    I'm almost sure this has been covered but I can't find anything good to what I need so I'll ask.
    I need to run fuel lines. I have a Solex on the L head, a poly tank with a rubber hose barb on top of the tank (not under the tank like the original steel). I also have an electric fuel pump, a carter. it's a fuel fliter then pump. It's rated 2-4 psi but I think I'll need a regulator in there too. How do I run the lines and where to? I'd like to do all rubber by a friend said don't do it, only use like 16" of rubber. how do I do this? The fuel pump has a barb on each end as well.
    Thanks
     
  2. Apr 5, 2009
    bkd

    bkd Moderator Supreme Staff Member 2022 Sponsor

    K-Town Tenn.
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    i ran 3/8 tube, bent to fit....regulator go's just before the carb (a adjustable one would be nice)...good luck
    Jim S.
     
  3. Apr 5, 2009
    timgr

    timgr We stand on the shoulders of giants. 2022 Sponsor

    Medford Mass USA
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    The original 4-cyl fuel lines are 1/4" steel. You don't need anything larger in diam than that.

    The later under-seat tanks feed through the top, but I don't recall the specific routing. I think I'd go down behind th tank and forward parallel and close to the frame, on the underside of the body. Then I'd go up the firewall and over to the carb. The fuel pump likely should go in or next to the frame rail, as close to the tank as possible.

    Long lengths of rubber hose is unsafe. I would bend steel line to fit, and use short lengths of rubber host to connect. 1/4" steel line (brake line) is available at any parts store, and it's cheap. Get a cheap tubing bender and bend it to shape. You can make a pattern from a coat hanger.
     
  4. Apr 5, 2009
    w3srl

    w3srl All-around swell dude Staff Member

    Port Orange, FL
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    :iagree:

    What Jim said. Keep the rubber to a minimum, especially on the suction side of the pump. Everywhere you have a rubber-to fitting connection make sure you use a quality worm-style clamp, and also use barbed fittings wherever you can. Oh, and make sure you have a good inline paper filter prior to the regulator/carb inlet. It's tempting to use a filter right out of the tank but you'll liley have issues with that as the pump is much better at pushing fuel than pulling it.
     
    Last edited: Apr 5, 2009
  5. Apr 6, 2009
    sammy

    sammy Coca-Cola?

    Albuquerque, NM
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    Wasn't it actually 5/16" line? I have a bender, I can do all that. Flaring is what kills me and is why I needed someone else to do my lines. As long as I get no funky lengths I think I'll be able to do it. Brake line is acceptable for the lines? I have a fuel filter pre pump. How do I get the hard lines to the barb? Will I need to go to my pipe/hose parts house you think?
    Thanks guys
     
  6. Apr 6, 2009
    jeeper50

    jeeper50 jeeps 'till I die

    Spanish Fort. AL
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    steel brake lines are great for fuel one five ft piece should run from the bottom of the tank to the frame next to the fuel pump. Run it in the frame rail between the ross box and the frame.
     
  7. Apr 6, 2009
    bkd

    bkd Moderator Supreme Staff Member 2022 Sponsor

    K-Town Tenn.
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    Sammy just run the line close then use short sections of rubber hose to connect.......I didn't flare my fuel lines, and they worked fine. If you have a worry about not flaring you can double clamp the ends
    Jim S.
     
  8. Apr 6, 2009
    kaiser_willys

    kaiser_willys Well-Known Member

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    you can pick up the flaring tool at any hardware store, but keep in mind you cant do the double flare used on brakes, should work just fine for fuel though, fuel lines dont need the double flare, not as much pressure as brakes;)
     
  9. Apr 6, 2009
    timgr

    timgr We stand on the shoulders of giants. 2022 Sponsor

    Medford Mass USA
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    Brake line is fine ... exactly the same material as factory steel fuel line.

    The memory bank says 1/4" for 134s. I know that everything else Jeep uses 5/16" to the engine and 1/4" return. Intuitively I think 1/4" will supply much more fuel than the L134 will need, and it's not an issue. Maybe someone else will confirm.

    You can use larger tubing if you want - I can't think of any substantive objections, except that 1/4" is adequate, and is cheaper and easier to work with than larger sizes.
     
  10. Apr 6, 2009
    Vanguard

    Vanguard Take Off! Staff Member

    Vista, CA USA
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    IIRC, the fuel line size should be dictated by the fitting at the fuel tank end. Start with what fits, I think its 1/4. If flares are a problem, start with a 60" piece of brake line fitting, come out from the tank, run to the drivers side frame rail and up to the vicinity of the fuel pump.

    While you shouldn't use all rubber, you do need a section of rubber to provide flex. This should be around 8 - 10" and is how the factory did it. The flex section should be installed near the fuel pump.
     
  11. Apr 6, 2009
    mdbeck1

    mdbeck1 55 Willys CJ5

    Oklahoma
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    Aug 21, 2008
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    I guess it's time to show my ignorance. I've got a '55 CJ5 with a L head in it. There's only ONE line going to my carb. Is the RETURN line for later model stuff or did the PO do it to me again?
     
  12. Apr 6, 2009
    kaiser_willys

    kaiser_willys Well-Known Member

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    later model stuff, and dont quote me but i think that the return line was a :v6: only thing, the 1970 cj5 f134 i had only had one line
     
  13. Apr 6, 2009
    Snafu

    Snafu New Member

    Landers,Ca
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    With as much water they put into "fuel" now a days. Would be a good idea to use stainless steel lines. The regular metal brake lines will rust out because of the water.

    Ed
     
  14. Apr 6, 2009
    Lifesgoodhere

    Lifesgoodhere Like 6 Jeeps isn't enough

    Staunton, Virginia
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    the Solex carb is rated for 3-4 psi. You won't need a regulator. The Carter W-O carbs are rated fro 2.5-4.5 PSI.

    I got electric pump from Federated. Its rated 2 psi with no load (when the pump is pulling air, getting ready to be filled with fuel), and 3.5 with load.
     
  15. Apr 6, 2009
    sammy

    sammy Coca-Cola?

    Albuquerque, NM
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    So what you're saying is I don't need to flare the lines to connect them to barbs, just slip the hose over the hard line and use good clamps? That's how the PO spliced in a fuel filter just pre carb, no barbs. Looking at it I can attach it to the bottom of the tub, or run it along the inside of the tub out through the floor board?
    Thanks
     
  16. Apr 6, 2009
    sammy

    sammy Coca-Cola?

    Albuquerque, NM
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    :? Water?

    The carter pump I have is rated rather low as well. You sure no regulator? thanks
     
  17. Apr 6, 2009
    neptco19

    neptco19 That guy....

    Athens, GA
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    yup slide the hose on and clamp.
     
  18. Apr 6, 2009
    Patrick

    Patrick Super Moderator Staff Member

    Los Alamos, NM
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    X2.
    I even have a couple pieces slid on to the factory plastic line and clamped. Not an issue.
     
  19. Apr 6, 2009
    windyhill

    windyhill Sponsor

    PA
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    I'd put a little flare on the line though, why not? Just a little insurance and so easy to do.
     
  20. Apr 6, 2009
    Patrick

    Patrick Super Moderator Staff Member

    Los Alamos, NM
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    Yeah, I'm not sure I'd buy gas somewhere I knew it had water in it..
     
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