and if i recall, AllanD did not do a dual tank setup, he took out his original tank, and put in a rear tank from a full size pickup. im pretty sure he only has one tank. he may have some parts though. as far as a b2 tank, length and width are the same as a ranger's 2nd tank, its just taller.
And your recollection is wrong... very wrong.
I first replaced my original 14.5gallon '86-88 supercab tank
with a 1989-90 17gallon PLASTIC main (midship) tank.
A few years later I discovered the 1990-97 supercab tank
typically quoted as "20 gallons" sut sometimes 21gal.
I have put as much as 24.2gal in this tank.
While I was doing a massive overhaul of my truck two-three
years ago (I started three years ago and it took 14months)
I finally produced a solution that worked for an "aux tank"
A 1989-97 F35/450 "Dually rear wheel" fuel tank.
This tank is quoted at 19gallons but fron dead dry to standing
fuel in the filler neck takes 21.55gallons.
This behind the axle aux tank is in addition to the In-bed tank
I've had for about seven years. that is the tank from a Grumman
step van mounted crosswise in the bed and concealed inside
what looks to all but the closest examination to be an aluminum
diamond-plate toolbox.
How is it all connected?
The two tanks underneath are connected in a more or less stock
manner for a Factory dual tank truck.
There is a six port selector valve (this positively contols both feed and return)
However I'm running high pressure pumps in BOTH fuel tanks and the selector valve simply isn't designed for the pressure.
So I have inline check valves mounted on both tank units
and the selector valve "switching" the pressure fuel is irrelevant
(good thing the valve O-ring to the rear tank side of the valve is "blown")
The selector valve does switch where the return fuel goes
(actually THE most important thing in a multi tank system)
and it switches the leven sensors, but power to the in-tank
pump is actually controlled by the dash switch.
Even though I had a factory dual-tank supercab donor to
supply the lines and wiring all lines are all made up, because
the longer 1991-97 main tank forced mounting the selector
valve approximatly 10" forward of the stock location.
The in bad tank is not currently connected to the fuel system
because I'm still deciding how to do so...
I can say it will NOT ever be connected to the high pressure side of the system, but rather will be used to refill one of the other tank.
Currently that in-bed tank is sitting on the ground because I had the bed off my truck over the weekend... My rear tank fuel pump died friday and I had to pull the bed to replace it.
As for my brother's F250 with the 60gallon rear tank?
IT won't go as far as you'd think... his 1992 F-250 Supercab
has a 5sp (good for economy) 4.10's (not so good) 33" tires
and it's powered with a 7.5 V8.
On a good day it'll do 14-15mpg.
With 80odd gallons of fuel it made it from my place in Pennsylvania to the The Mississippi River and into Iowa
(barely)
On the one west bound trip (of two made wiht the truck)
where he actually paid attention he got 11.5mpg, but he was towing a heavily loaded trailer and he was in a hurry...
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what else ya takin from the bronco? perhaps a few horses?
