An aux tank is a nice add-on if you plan to go on long trips in remote areas. You avoid jerry cans inside the car, and the heavy tank lovers center of gravity.
Tanks can be purchased for the popular overlanding vehicles, but are expensive so I decided to find another tank that would fit. I ended up with a used standard tank from a Land Cruiser 70 that there are plenty of where I live. I am sure there are many others that would fit as well, e.g. Iveco small truck or 2nd gen 4runner tank.
Volume is 90 liters, height around 40 cm witch makes the ground clearance quite OK. The tank goes where the spare tire normally hang, so this must be relocated. See Rear bumper Land Cruiser 80.
The tank is not connected to engine fuel line, but a transfer pump pumps fuel into the vent pipe of the main tank so it fills the main tank. I am using a standard Facet fuel pump and an inline filter for this.
Filler neck
Adding a dual filler made this not a budget solution any longer, but it is a beauty. This is the filler used for Land Cruiser aux tanks. You pull a lever to fill the aux tank. All hoses used are standard hoses from 80 and 70.
If you realy will go budget it is quite easy to build your own dual filler. Weld a pipe on the standard filler so it becomes a Y. The V in the Y goes to each of the tanks. To fill a tank, stick pump nozzle into the right pipe.
Also a nice feature is that the tank level transmitters are the same in the two tanks, so I simply added a switch to the gauge input to select if I would see main or aux tank level. I also added a LED above the gauge that is lit when aux is selected.
Tank fixings are made of square tubes; one in rear between the frame members and two above for support. In front I used the existing cross-member. The tank hangs in its original straps.
Adding the tank meant that I also needed a rear bumper and tire carrier as well. I went for my own light-weight design. See xx
Here are a few vendors for Long Range Tanks:
longrangeamerica.com
thelongranger.com.au
ironman4x4.com
arb.com.au
frontrunneroutfitters.com
