All you would need is a 1 way check valve. Lets fuel into primary tank but not out.

 

If you put the auxilary tank where the spare tire is, maybe you could run a secondary line to your main line, forming a T connection as someone said earlier, then designate a switch in the cab to trigger an electronic valve between the two at the connection, then rig the fuel pumps for the main and aux fuel tanks to shut off when the opposite tank is selected, it would seem somewhat like the 90's Ford pickups w/ dual tanks. I'm not sure if this would work, but it seems to make sense.
As for the guage, I'm don't know how they work (counting on one of you more knowledgeable guys to correct me if I'm wrong), but if you got a fuel tank from another vehicle to act as your aux. with the guaging mechanism intact, (provided that tanks are equipped with such a device) you could wire it to the instrument panel and like I said, it would be like the older fords where the guage would display the amount of fuel for the tank you select. (if this can be done) Even easier, you could just install a seperate guage. Sounds like an interesting project though. Also sounds like a lot of wiring.

 

Ford owns the cummins plant or did. (can't remember) but that's why dodge didn't have a crew cab till 03. and yeah on like F650s and up used the cummins, they might have switched to international

 

all they use is a float that runs across a potentiometer which changes resistance to your gauge making it go up and down. and i was just going to bypass the whole need for the tank switch by connecting them together with lines at the top and bottom so the would empty and fill equally. which the only problem with a one way check valve in the line is you couldn't fill the tank till your first one was completely full and its probably wouldn't work because their is no way for the rear tank to vent if you completely seal it.

 

I know this is the enemy, a Toyota, but he did the same thing you're thinking about. Maybe something he did can help make up your mind.

http://www.expeditionswest.com/equip...fuel_tank.html

 

I am not sure why running a simple float and small transfer pump would be an issue, if the truck would run primarily off of the stock tank this would be easier. I talked to Bob about this some time ago when I was driving so much that I was filling up every other day. It sounds like the BII tank is the way to go. It was for me before I moved.

 

well i got a friend who will give me a tank out of a jeep Cherokee sport. so twenty more gallons filled. and i bet i can get all the stuff to run the pump in it too then i could just have it pump fuel into the primary tank all the time? but having 36 gallons in my truck would mean i could go anywhere from 540 to 690 with out refueling.

 

find a hit drivers side bedside, and graft the fuel door into your bedside. for the 6th gen trucks, they sold an add on dual tank with the filler in the drivers side wheel well. the tank was between the frame rail and the bedsides

 

thats good to know.

 

Ford does not, nor has ever own Cummins. they had a market share on cummins stock in the late 80s and early 90s.

that comment on the crew cab dodge was so ridiclious it doesnt deserve a reply.

 

well then whats the real story? enlighten me.

 

dodge had crew cabs back in the late 60s up until the mid 80s.

what else would u like to know about? the cummins or crew cab dodges?

 

i knew that they had crew cabs back in the day but i'm pretty sure that since they got the rights to cummins that they couldn't have the crew cab. till 03 atleast

 

Are you referring to a Ranger?

 

he was, and i was referring to putting the system in my ranger

 

dude, wont it take away from your mgp's with all the extra weight?

 

its only like an extra 115lbs and removing the spare takes off weight so anyone know what that weighs? it wont be that much more weight and its tucked under the body so i'll get about the same and big whoop if i go below my average of 15mpg i actually could get a little better than that just got to remove some of the lead in my foot

 

You've got alot of work ahead of you my friend. You'll need some fab work, an additonal fuel pump, some extra wiring will have to be done if you want your fuel guage to read both tanks. Plus some body work too. I suggest that you grab a Street Rodder magazine. There's alot of vendors listed in there that make custom fuel tanks. Plus there's a few other vendors in there that carry alot of inline fuel pumps too. That's the only reason I buy the magazines. For parts.

 

ha! made me laugh

 

ditto. They already did that at Dodge and Ford. They stuck an SRT 10 viper motor in a 1/2 ton ram over at Dodge, and Ford stuck the SVT 10 in an F250 (I thing that was the model it may have been the F350 not really sure).

 

NO YOU CAN'T! just adding air bags does not increase the GVWR of your truck. infact, this will reduce the load you can put in the truck because you are adding curb weight!

there is no way to increase GVWR, other than selling your ranger, and buying a bigger truck, they you'll probably get a larger fuel tank in the process.

i realize that the last action here was over a month ago, but i thought you should be informed of this.