Rear mounted fuel tank

[Iroc313]

Also bumping an old thread.

So we are limited to the types of tow hitches we can use if we do a rear mounted tank?

[csuengr]

If it is a receiver hitch, no. If it is the factory hitch with the diagonal bars, then yes.

[HeavyMetalThunder_81]

Lobie, do you have a write-up of that install? What year tank did you use? How many gallons is it? How is it plumbed? What pump are you running? Did you add/fabricate any cross members?

[serehill]

This is an awesome MOD. I need to do this to the Honcho.

[wewillsurvive]

Lobie, why did you bail on the E350 tank?


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[wewillsurvive]

So I think I'm gonna go with the XJ tank. Can anyone tell me what the two small holes on top are for?

[Jepht20]

The holes on the XJ tank are for the seals/valves:

http://www.crownautomotive.net/Jeep-Fue ... 18823.html

http://www.crownautomotive.net/Jeep-Fue ... 60058.html

[wewillsurvive]

Thanks Jepht20. I am gonna try to put in a rollover vent. I guess I'll just weld them up if I get that tank.

[carnuck]

They are vapor vents. So the fuel doesn't get pressurized and soak you, the gas pump, your truck and the person in the next row over with dangerous gas vapors and liquid.

[wewillsurvive]

RCI makes a 20 gallon aluminum tig welded street fuel cell with a sender, fill, and three line ports 30x17x7 (l x w x d). My measurements show 32x26x10 being the largest possible not accounting for rubbing. 26 is in between shock mounts. Anyone disagree with my measurements?
Cell
http://www.jegs.com/i/RCI/821/2172A/10002/-1

Strap kit
http://www.jegs.com/i/RCI/821/7515A/10002/-1


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[jpswapmohn]

I went with the 19gal F150 tank when I did the LT1 swap. I believe it was from a mid-90's truck. I do wish I had gone to something with a little more range, but didn't want the tank hanging down too far. This one tucks nicely. We did trim a little off the lip on the sides of the tank, but no leak issues. i may change it one of these days.

[EL GRANDE HONCHO]

Looing into this, what do you do if you are running a carb?

I simply pulled the in tank pump assembly (it's connected to the sending unit), cut the pump off and extended the pickup tube down to about 1/2" off the bottom of the tank (section of fuel line, 2 hose clamps, short section of 3/8" ID AL tube).
I did go back in to check it last fall when I thought I was having some fuel delivery issues but it was fine and has been fine for over 9 years that way.

if running a carb, can you leave the in-tank fuel pump and block off the mech. fuel pump with a plate? Would this work or would you need to install pressure regulator?

[EL GRANDE HONCHO]

Looing into this, what do you do if you are running a carb?

I simply pulled the in tank pump assembly (it's connected to the sending unit), cut the pump off and extended the pickup tube down to about 1/2" off the bottom of the tank (section of fuel line, 2 hose clamps, short section of 3/8" ID AL tube).
I did go back in to check it last fall when I thought I was having some fuel delivery issues but it was fine and has been fine for over 9 years that way.

if running a carb, can you leave the in-tank fuel pump and block off the mech. fuel pump with a plate? Would this work or would you need to install pressure regulator?

ah...I see its a internal FI pump, so once pressurized can you correct for pressure with regulator? Sorry, I'm not that familiar with Fuel injection systems...

[j10jim]

I'm doing the suburban 33 gallon tank. Since I had the filler opening closed up before painting the truck I am trying to figure out the best way to mount a filler tube preferable inside the bed. Those of you that have the rear tanks, what did you do? Thanks.

[derf]

Looing into this, what do you do if you are running a carb?

I simply pulled the in tank pump assembly (it's connected to the sending unit), cut the pump off and extended the pickup tube down to about 1/2" off the bottom of the tank (section of fuel line, 2 hose clamps, short section of 3/8" ID AL tube).
I did go back in to check it last fall when I thought I was having some fuel delivery issues but it was fine and has been fine for over 9 years that way.

if running a carb, can you leave the in-tank fuel pump and block off the mech. fuel pump with a plate? Would this work or would you need to install pressure regulator?

A block off plate for a big block chevy fits nicely over the stock fuel pump hole in the timing cover.

Fuel injection needs either ~15psi for TBI or 40-60 for port injection. You would need a pressure regulator to drop down to the 4-6psi that a carburetor wants. Preferably a bypass regulator so you get a constant flow of fuel, cooling and lubricating the pump.

[Jeff from Iowa]

I used a bj's alum tank. Its a good unit though the in tank fuel pump is real real loud. 24 gallons

[madkarl]

What tank straps are people using in their S10 fuel tanks?

I bought this tank: http://www.discountbodyparts.com/catalo ... cid=gglpla

and the straps that came with it won't work.

[GaJeep94YJ]

Spectra ST08. I had the same problem you did. These are several inches longer, but you need two...

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[madkarl]

Thanks GaJeep94YJ!

[troopthrowback]

I picked up a zj tank (23gallons, poly, with steel skid, receiver hitch, and straps) locally and ready to get started with the install. It's going on my 1963 wagoneer with Ford 240 six swap, carbureted. I'll be diving into some research for fuel pressure, gauge setup, etc. as far as fitment it's the same as a late model XJ tank, the width between the rails for the entire setup is a direct fit to the rear rails on the early waggie.

Anybody with details on how to make this swap work are encouraged to post up, I'm a total newbie when it comes to this kind of mod. Mostly I've just welded stuff (and not very well at that!) on my 2001 XJ.


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