Finally ... fixed, modified, improved my auxiliary fuel tank on the 4Runner. After 30 years, plus, of sitting under the truck some of the hoses were in need of replacement. Plus, there was a valve on top of the tank that sat in a grommet. That grommet was toast, and the tank would leak when I filled it up.
The one improvement was removal of the donut-hole for the spare tire crank. Back in the day I ran a spare under the bed. The aux fuel tank was sandwiched between the frame and the spare. The result is when I dragged the tire, the aux tank would get caved in. After installing the Stout Equipment rear bumper, the spare tire was relocated.
So, with Virgil's mad welding skills, I pulled the tank, cut the bottom off, and removed the donut-hole. Virgil welded up the donut-hole, and a new bottom was installed. I really thought I was taking more pictures of this project. As it turned out, I hardly took any.
The bottom of the tank, before. You can see the donut-hole, and how the tank was caved in.
This was the tank on my xcab, which I believe was a larger tank. It shows the spare tire crank.
The old and new evap valves. I went with an aftermarket valve, mostly because I wasn't sure what I had. Once removed from the tank, it turns out the valve was a Ford valve. It was much better constructed than the aftermarket. This valve was also used on a slew of Jeeps, in addition to a ton of Fords.
Tank reinstalled with the flat bottom.
On paper, removing the donut-hole will give me about an extra quart of fuel. Ya, not much, but I'll take it. I was also able to get rid of the spare tire crank that dangled down and clanked.