2500CTD

Any one every made their own aux tank? What requirements are needed. Does a diesel tank have different specifications than a gasoline tank? I want one to bascially double as the floor for the bed. So maybe a 6' by 4' by 12" high.

dieselcarpenter

I have one that sits where the spare used to sit under neath. I think it holds 40 gallons plus, not sure never filled it. it has a valve and a transfer pump that just fills the regular tank (connected to the filler) the switch doesn't work so I haven't messed with it. I think a 2-3" in tank the size of the entire bed would be pretty awesome! Hold a lot of fuel and would put traction weight on the rear axle! Sounds cool I say go for it! I am not sure of what metals would be best. bare steel would rust over time (inside), but galv might react with fuel. Aluminum might work so would stainless.

Thats my .02!

Festus

I had one built for my '98 out of 3/16" aluminum and holds 51 imp gal or 58 US gal. I haven't installed it in my '07 yet - just eyeballing says it isn't going to fit, but I have to get out the tape measure to confirm.

The place that built it for me will not build one out of 1/8" aluminum as they say too many have cracked - 3/16" is the minimum.

The other reason I have yet to install, is figuring something with a toolbox combo to work with a GN hitch on a Mega. Everything points to having something custom built again.

2500CTD

I'm thinking of making a tubluar frame and then facing it with .060 aluminum sheet. I can brace it internally with the tubing. Kinda like Fuel cell

Rattlerattle

I quickly did the caculations for a 6 x 4 x 1' tank and they turn out to be rougly 180 US gallons. Just the weight of the fuel that would be about 1314 pounds not including the weight of the material for the tank itself.

L x W x D = cu ft.

cu ft x 7.47 = US gallons

#2 is rougly 7.3 lbs a gallon.

HTH's

logskidder

Thats a big tank

crane 1

I built mine from 14 ga galvanized because I couldn't buy one that would fit under my toolboxes. Bent it up on a 10 foot brake and welded it with fluxcore wire after scuffing all the edges. Then I pressure tested it at 4psi with soap and water to check for leaks. It has a bevel in it so I can see my gooseneck ball for hooking up and I run through 55 gallons a day. No problems at all for 3 years and counting.

12valve@heart

If you make on to cover the floor of the bed, make sure that it's baffled in both directions to minimize the slosh effect.

Jim Lane

If you didn't baffle it, a half tank (90 gallons) would drive like you were hauling Swinging Beef.

Could get intresting while driving on wet or icy roads.
Jim

12valve@heart

My thoughts exactly.