Auxillary Fuel Tank

[MSanford]

I'm hoping that someone can help me here. I am going to install a tank in the bed and I was wanting to have it set up with a FASS system and also so that it is completely isolated from the main tank. I've been looking at some selector valves but have never used any before. If anyone has used any, your advice will be greatly appreciated!

 

[Boondocker]

I don't get it
Are you saying that you want to run the Aux tank directly to the fuel injection pump by way of a FASS, like having two completely independent and redundant fuel tanks, and be able to switch between them? Any plans for fuel gauges? Sounds complicated and expensive, so I'm guessing that's not what you want because I wouldn't know how to justify it.

If you just want an independent and isolated tank, why not get a fueler (the kind with a nozzle for fueling other vehicles).

I'm quite happy with my Transfer Flow system. The Trax II monitor gauges both tanks and integrates the stock fuel gauge for the total. It's fully automatic, and while I would prefer some manual control, it works as designed. Transfer Flow is top of the line and priced accordingly, but you know the old saying about getting what you pay for.

Good luck with your project.

 

[MSanford]

Thanks for the reply. I think I've decided to try a Pollak selector valve for my setup. I will post results within the next several weeks.

 

[CBrahs]

I had an aux tank in my dmax and had a electric switch like you are talking about. You can get it from Northern Tool and can switch tanks on the fly like the old left tank right tank set up on the older trucks. Also it has the capability of having a sending unit in the aux tank and can either wire it to the factory gauge or have a separate fuel level gauge. So you could plumb the FASS between the valve and the engine to do both tanks.

 

[Okie-Go]

I have mine set up to pump from the tank in teh bed to the oem tank. Took the filler neck to a radiator shop and added a nipple to the filler neck. I flip a switch in the cab and fuel while going down the road. Only down side if I forget the tank will overfill. So far I have beed lucky. I have the pump and an extra filer mounted under the bed on the frame. This is the second truck set up like this and no problems in six years. I try to change the filet about once a year. This way all the fuel that is been in the big tank is filtered twice before it hits the engine.

 

[DennyDay]

The easy way to prevent over fills from the aux tank is to use a line voltage timer - - a 15 minuit one is what I use and set it half way - - that way it shuts off before an overfill.



Denny

 

[jnelson]

Plumbed mine straight to the return line with a brass shut-off valve. Works great. No pumps, no wiring, no hassle, and perfectly legal. The line voltage timer is a great idea though.