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fuel line

Discussion in 'Early CJ5 and CJ6 Tech' started by lafester, Sep 13, 2005.

  1. Sep 13, 2005
    lafester

    lafester Sponsor

    loveland, co
    Joined:
    Sep 24, 2002
    Messages:
    260
    after some searching i still have a couple questions on fuel line replacement and routing. i am swapping in a '76-86 15 gal tank.

    from what i understand i should use 5/16 brake line from flaps, route along frame rail to engine.

    first question is what is the best way to tie the line to the frame?

    second, people have mentioned flaring the lines. i was pretty much thinking it would be a straight shot to the engine and use hose to connect to the hard lines at the engine and tank. are there places where a hard connection is needed?

    thanks, chris
     
    lafester, Sep 13, 2005
    #1
  2. Sep 13, 2005
    Mcruff

    Mcruff Earlycj5 Machinist

    Albertville, AL
    Joined:
    Sep 22, 2002
    Messages:
    5,349
    Chris when I put mine back together in May I ran all soft line, the hard line was looking like alot of trouble so I went with standard fuel line. If you want to run hard lines see if you can find the little metal or plastic clips that snap into the holes in the frame rail and then you snap the hard line into clips on the sides.
     
    Mcruff, Sep 13, 2005
    #2
  3. Sep 13, 2005
    61CJ5

    61CJ5 Member

    Lafayette, CA
    Joined:
    Feb 9, 2003
    Messages:
    188
    I've had a few people tell me that running a long piece of flexible fuel line like that is funky, but I've had no problems with it going on a few years now.
     
    61CJ5, Sep 13, 2005
    #3
  4. Sep 13, 2005
    gte636p

    gte636p Member

    smyrna, Ga
    Joined:
    Sep 23, 2002
    Messages:
    492
    i went with hard lines down the frame rails tied down like mcruff said, but used rubber ends when connecting it up to anything. it might be me being over cautious, but i don't want any conections made to something that could potentially move wihtout the rubber in there to take the blow, i just had images of a line crack or something down the road.

    but, it you want to connct things right up you'd neer to flare it going into the fuel pump. as for the tank, i can't quite remember, but i think you'll have to connect with a little rubber peice.
     
    gte636p, Sep 13, 2005
    #4
  5. Sep 14, 2005
    lafester

    lafester Sponsor

    loveland, co
    Joined:
    Sep 24, 2002
    Messages:
    260
    ok, for the rear tank ('78 install i have the following measurements for fuel lines.

    1" fill hose
    3/4" vent hose
    1/4" @ tank to 5/16" @ fuel pump
    3/16" return @ tank to 5/16" @ fuel pump

    the return line is 3/16" at the tank and 5/16" at the fuel pump. i assume they make an adapter so i can run 5/16" line and connect it to the 3/16" tube? or does it matter since there won't be much pressure so it won't leak? the 1/4" tube @ the sending unit seems to fit 5/16" hose just fine.

    thanks, chris
     
    lafester, Sep 14, 2005
    #5
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