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Dual Front Fuel Tanks and 1 Fill tube.

Discussion in 'Early CJ5 and CJ6 Tech' started by goofyjumper, Jan 11, 2012.

  1. Jan 11, 2012
    goofyjumper

    goofyjumper New Member

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    I've looked through the forum and seen that the dual tank topic has been well discussed. For suspension reasons, I am exploring the idea of running dual underseat tanks on my pre 71 CJ5 tub. For safety reasons I will probably build an outter shell around each poly tank. I have a rear 15 gallon tank, but it isn't going to work out if I stretch the wheel base. Was wondering if there is a way to plump a fill system so that I don't have to run the jeep up both sides of a fill up island to fill each side.

    Thanks in advance!
     
  2. Jan 11, 2012
    66cj5

    66cj5 Jeep with no name

    NorthWest Indiana
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    used to be an aftermarket kit for '73-87 GM trucks with dual tanks (they sat outside the frame) that used a long fill neck to fill the tank on the other side.

    I don't think it would be too much fab work to be able to do such a thing, unless you wanted to be able to fill up from either side (that's how the kit was set up).
     
  3. Jan 11, 2012
    colojeepguy

    colojeepguy Colorado Springs 2019 Sponsor

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    You'd have to have a decent sized hose running from 1 tank to the other, and in this application, that would mean running right across the passenger compartment. That doesn't sound like a very good idea. I think your best bet is just have a filler on both sides & deal with pulling up to both sides of the pump if you want to fill both.
     
  4. Jan 11, 2012
    nickmil

    nickmil In mothballs.

    Happy Valley, OR
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    Or you could build a tank that extended all the way across the tub under the seats. About a year and a half ago I sold a Parts Jeep that had an aluminum tank like that. Just another option.
     
  5. Jan 11, 2012
    goofyjumper

    goofyjumper New Member

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    I considered one long tank spanning from the driver's to passenger side, but was worried that in off camber situations on a trail that all the fuel would move from one side to the other and leave the pickup high and dry. But I suppose filling up on each side separately isn't an issue for an non-daily driver either.
     
  6. Jan 11, 2012
    PeteL

    PeteL Member 2020 Sponsor 2019 Sponsor

    Hills of NH
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    The beauty of two tanks is one can be valved so as to be a switched reserve.
     
  7. Jan 11, 2012
    grannyscj

    grannyscj Headed to the Yukon

    Anchorage, AK
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    Didn't the M38 (or M38A1) have a dual underseat tank that filled from the driver's side? Might check on G503.
     
  8. Jan 11, 2012
    Warloch

    Warloch Did you say Flattie??? Staff Member

    Falcon, CO
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    That is what baffles are for and in a tank like that you wouldn't want the fuel to slosh at the wrong time with a mostly full tank either.
     
  9. Jan 12, 2012
    colojeepguy

    colojeepguy Colorado Springs 2019 Sponsor

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    M38A1 had the tank in the same place as a CJ under the drivers seat, but it was larger. There was a recessed area that hung down below the seat to accomodate the bigger tank.
     

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