And we have updates!
Behold! The Infamous 42 gallon Suburban fuel tank. So how do you put 50lbs of manure in a 25lb bag? Well, fist you remove anything that sticks up from the top of the tank. On the Suburban tank there are two vapor vents (for the charcoal canister) and a vent for the fill. The vapor vents were filled with freeze plugs (turned down to 1.22") and installed with JB Marine Weld(fuel resistant). The hole for the fill vent (it was already torn off when I bought the tank-got a deal because it was damaged) was filled with by tapping the hole to 3/8 NPT and screwing in a plug coated with the same JB weld. I then made a new vent next to the original fill by drilling a 1/4 hole and enlarging it with a tapered tap (to make an area for the tap to bite), tapping it 3/8 NPT, and installing a plug.
As others have done, I cut the rear most crossmember off to make room. Sine the tank will block access to the nuts that hold the bumper and trailer hitch, I welded them.
I had to trim the floor brace so I could get the tank as high as possible.
While under the truck, I installed my new air shocks. I drilled a couple holed in the crossmember located just behind the rear axle to hang the tank mounting bolts.
I braced the rear of the frame with an L brace (to hang the tank) and a larger brace attached to the bumper brackets. Here is the L bracket.
A hole was cut in the floor to make easy access for the fuel sender/fuel pump unit.
The tank, once installed doesn't hang all that low... here it is from a normal viewing height, sans trailer hitch.
Here it is as seen from down low. again, sans trailer hitch.
The exhaust passes between the rear shock and fuel tank with little room to spare. Currently there is about 1/4" between the exhaust and each item.
Here is another view. Once done, I'll take it where I can get it up on a lift so I can dimple the pipe and the tank to give about 1/2" between the pipe and the shock, and a good 1" between it and the tank.
