3rd gen 4runner F-150 tank swap behind rear axle

[troyboy162]

just consolidating this now that i have real internet

the tank is a 1990-1997 ford F-150 rear gasoline tank. the diesel version is the same but its fuel pump will be different. the fuel pump that goes with the gas unit is close enough to the toy 3.4 unit (possibley others) that people have had this swap for years without issue. the tank sits in the stock spare tire location up and out of the way for the most part. so on with it...

the cost
I have about $350 into this mod. I had hoped to come in $100 less, but my tank source was pretty expensive at $225 for the tank/pump/sender and mount brackets. in the past people have gotten the tank/pump/sender for only $50

the tank
its 18 gallons (same as stock) @and 34-3/4" x 27" x 7-7/8". you can safely pound that down to 25" by flattening the pinch weld on both ends(yup just like your wheel wells). the tank is also oddly deep in a small area at the rear. that can be pounded down as well without loosing more then a 1/4 gallon.

-they come in plastic too
-make your own air purge line so you can fill faster at the pump.
-evap (charcoal canister) line is 1/4" low preasure fuel line







the fuel pump
the ford pump ues nice quick release fittings. feel free to go through the trouble of adapting to them...or cut them off as most do lol. leave as much tube as possible to clamp to. I think it runs at roughly 35 psi and i worried hose clamps wouldnt hold, but they make special fuel hose clamps that do great at the job. The sending unit is said to have the wrong ohms for our system. feel free to put effort into making it work only as rough estimate...or dont even bother with it and use a ultraguage or scanguage.

-light motor oil on the pump seal 0-ring will aid in installation
-fuel return is 1/4" low pressure fuel line
-fuel feed is XX" high pressure fuel line
-fuel pump + is red, negitive is black
-toyota harness fuel pump + is blue/orange negitive is white/grey?



fuel filler hose
-45deg pre bent 2" exhaust piece
-2" fuel filler hose (expensive $19 per foot. measure three times lol)
-fits up high on the stock filler neck
-2" is not a tight fit for the tank or the neck but its close enough to hose clamp down
-air purge fitting is XX" on the stock filler neck



connecting to stock fuel lines
- 1/4 fuel return and evap fit perfectly
- fuel feed can clamp to the flange of the toy fuel feed line but this is ghetto. so far its working fine though.



2011-07-11_08-26-54_858








[quote author=Scuba link=topic=8999.msg97851#msg97851 date=1310323665]
Tank mount


Forward mounts





You can see the forward mounts as well as the holes drilled through the bumper tube for the rearward mounts




[/quote]

[etc.]

Very nice

[Steve97TJ]

I'm assuming you could do the same thing in a 1st gen Tacoma as well with success?

[RickerRicker19]

Looks good!! I'm saving this one for when I get around to it. That fuel tank fits perfectly! Did you use an online source or a junker yard?

[vegaskurt]

Does it sit flush with the frame rails or does it hang below? body lift?

[Scuba]

Originally Posted by vegaskurt

Does it sit flush with the frame rails or does it hang below? body lift?

It does hang below a bit. Not sure on exact number.

It has a 1" body lift.

[TEJASYOTA]

Sweet job!

Hey check you last few pics, they did not show up.

[Prematuregrey]

Has anyone done this on a 2nd gen runner? I'm trying to get my shopping list together and just noticed it was for a 3rd gen.

[Shakerhood]

Looks like it fits pretty nice.

[Brain]

Originally Posted by Steve97TJ

I'm assuming you could do the same thing in a 1st gen Tacoma as well with success?

I would say so but you'll have to get creative with the fuel filler neck.

[00regcab]

Its doable. Not too bad. I have to fight mine to fill it sometimes but it works. The tank hangs under the frame by about 2" at the lowest point and I used the factory ford and Toyota fill locations. Worked out pretty good. However I am planning to build a custom fuel tank this winter.

[BruceTS]

When I did my tank swap, I drilled an additional hole through the fuel pump top plate and added an additional wire. Then used the stock Toyota sending unit, so my fuel guage didn't read backwards. If I ever drop the tank I'll post picture on how it was done.

You might want to add a skid plate, even though the tank sits up quite high, I still managed to land on a rock on the Rubicon and crush a corner of it.

Locally around where I live you can pick up a complete tank with pump for around $125 from the junk yards.

[TacoDell]

Originally Posted by troyboy162

jthe tank is also oddly deep in a small area at the rear. that can be pounded down as well without loosing more then a 1/4 gallon

that is probably the fuel reserve sump of that particular tank.
pounding on that... could mean less reserve fuel ?

definitely needs some plate protecting that fuel tank

good luck with it

[rojodiablo]

Pretty cool cheap trick!

[89s rule]

Could this be done as a secondary tank? My one gripe about our 3rd gen is the pitiful fuel tank range. I'm getting around 200 miles to a tank. Compare that with my t100 which gets 350. Then again the T is 100% stock. lol