A budget Aux Tank

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Joined
Feb 24, 2011
Threads
63
Messages
182
Location
Norway
Website
www.inditravel.org
An aux tank is expensive, especially here in Norway where prices are two times US prices with freight and taxes. 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 here. I am sure there are many others that would fit as well.

Adding a dual filler made this not a budget solution any longer, but it is a beauty. All hoses used are standard hoses from 80 and 70. 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
https://forum.ih8mud.com/showpost.php?p=8745366&postcount=174

70 fuel tank.webp


SNC10336.webp


SNC10328.webp


SNC10331.webp
 
Awesome. What is the size of the tank? Height and capacity? I may be able to find some of these too!

Not many 70-series in the USA, thankfully I'm in Canada :)
 
So are you using the electric pump to feed fuel to the stock tank like a transfer system or straight to the injection pump?
 
I think a 2nd gen 4runner tank will work for us poor souls in the US without a 70 series at the local pull a part
 
a bunch of people use that here in Venezuela. The only thing that is hard to find is the bypass style filler neck (the oem one with the tab you pull to fill the aux tank)

Other than that, its a great fit..

People use it to fill the main tank, aux tanks are rarely connected to the fuel delivery system.

The 70 series tank has a 90 liter capacity. Not sure about the dimensions..
 
I think a 2nd gen 4runner tank will work for us poor souls in the US without a 70 series at the local pull a part


That's what I did, and I will say it "kinda" works for an 80. The stock 80 tank actually seemed to nest a little better, but the 4runner is a bolt mount, and thus was easier to fit to the spare bracket; but at the cost of less volume.

The only shortcoming of the 2nd gen tank is the fact that it sticks out a bit on top (not flat), and thus the bottom of the tank is a little lower...
 
Volume is 90 liters, height around 40 cm witch makes the ground clearance quite OK. The pump is a transfer pump that pumps into the vent pipe of the main tank.

If you realy will go budget it is quite easy to build your own dual filler. To fill a tank, stick pump nozzle into the right pipe.

Frontrunner 7YFillerNeck 5.webp
 
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