Aux Fuel Tank and Truck Cap
01-10-2010, 01:59 AM
#1
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Aux Fuel Tank and Truck Cap
Is it possible to run an Aux Fuel Tank inside a Truck Cap?
I'm concerned about safety ie, venting in the cap.
What are my options?
Hutch
I'm concerned about safety ie, venting in the cap.
What are my options?
Hutch
01-10-2010, 05:45 AM
#3
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I have a 110 gal bed tank and I have been thinking about putting my cap back on. My venting cap always makes a mess when the tank is full other than that its dry. Unless I were going to sleep back there, carry an animal or be running a camp stove or heater( not that I would anyways next to a fuel tank) I would not worry about it. My tank is a transfer tank so its limited to venting options unless you want to make something custom. However i see your in AZ so the heat may cause issues that I don't have.
01-10-2010, 07:40 AM
#4
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I've got a 45 gallon aux tank inside my truck cap. It is plumbed so it can be filled from the same side as the main tank. I went to a junk yard and got a cut out section from the side of a wrecked gasser so I could plumb through the side of the cap. I plumbed the fuel feed and return line through two manual selection valves on the floor next to the drivers seat so I can switch tanks on the fly. I also ran the fuel guage through a SPDT electrical switch so I can read the fuel quantity in the tank I am using, The system works great.
Bob
Bob
01-10-2010, 08:26 AM
#5
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If you want to install a remote vent, you can get a vent from a marine hardware store or even Walmart in some areas. The vents are designed with a screen to prevent flash fires and fit to a 5/8 inch neoprene hose. A hose barb in the existing tank vent connection should complete the installation. The vent needs to be higher than the top of the tank to prevent spills.
01-10-2010, 07:55 PM
#6
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I wish i could find pictures. My boss's truck has a 110gal gas tank in the back of his capped truck. He leaves the windows open and has it plumbed up to about 2' above the bed rail and it uses a standard gas cap with aluminum flip cover. If you don't have side windows you could probably make some vents in the highest point with a cut off wheel.
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