Hey guys, my 2000 F-550 came with a measly 20 gallon tank. I would love a LOT more range if possible, it's a rollback, but I use it for taking my track cars to go race....
Could I add a saddle tank that feeds the main tank? I have a lot of room since it has 19 feet of rails after the cab.
Any more great ideas?
Step tanks to either passenger side, driver side, or both.
Are you diesel? Or, gasoline?
I think it is common for diesel tanks to be outboard mounted but more common for gasoline tanks to be mounted inside the frame rails giving more protection to the highly flammable gasoline
The Ford excursions had massive tanks. My gas tank is 44 gallons, and it looks like the diesel used the same tank. Maybe you could swap?
In reply to John Welsh :
Its a diesel, can I feed them to the main tank? I haven't actually dug into what it takes to (fuel pump wise) to feed the beast.
In reply to RevRico :
That's an ok option....
https://www.rcpw.com/truck-accessories/aluminum-reservoirs-140/SMC35A.html?gclid=CjwKCAiAiKuOBhBQEiwAId_sKwERr9f0klklmPdKawPOWGCZEQEEiHy2elFVt8hcDLnsYqrM21hBiBoCZBoQAvD_BwE
I was looking at tanks like this...
I looked at excursion tanks and the sit behind the axle, my truck has a wheel lift so that's probably a no-go.
I was thinking tanks at the driver's door similar to this example:
But, I can't find anything similar designed for the F550. There may not be good side mounting options or enough ground clearance to mount effective tanks.
I planned on putting it where this toolbox lives today:
My ambulance (Ford cutaway van) has a 50 gallon tank between the frame rails, right behind the rear axle. I believe all cutaway e350's came this way, not regular e350 vans. That should be an easy addition. You can plumb it to feed your existing tank with a manual switch that activates the in tank pump.
If you want to replace the toolbox with a tank, look for people parting out old RV's. They usually had 1 or 2 rectangular tanks hidden underneath the bodywork.
Hmmm, I guess I need to figure out how the fuel system works in the 7.3 - does it have a lift pump? I haven't dug into it too much yet.
In reply to accordionfolder :
Go to a heavy truck wrecker with a tape measure. You can pick up the brackets and everything else for pocket change. Older truck tanks drew from a port at the bottom but newer ones draw from the top like a car, with a tube extending to the bottom after too many trucks tore their fuel line off and emptied the tank onto the road. Diesel injection pumps usually will draw fuel, but most still have a lift pump. You can just add one inline close to the tank if you cannot reuse the existing one.
Pre 1999 they had a camshaft driven lift pump mounted in the engine valley. The 99+ engines had a frame mounted electric pump. Both variants supplied about 60 psi to the fuel rails.
So I guess my previous comment about using the in tank pump won't work. Brain fart.
In reply to WillG80 :
Honestly seems like it'll be easier to deal with since it has an electric fuel pump. From what I can see is it's a return system so two lines heading back to the tank, a pump, and a sender and I can probably get it happy with whatever tank I want to use.
Thanks for the advice everyone, lemme look for a wrecking yard local to see what I can get to fit....
In reply to accordionfolder :
Fords used a really nice tank switching valve on the old dual tank setups. It would switch the sending units and the return line. The tank switch would switch the valve and which electric fuel pump was being powered.
They did not need to switch the feed lines because electric pumps have check valves, one pump will not backfeed into the other tank.
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