After looking at the normal options, the other offerings from ATL and then pretty much all the fuel cells that summit sells, I really couldn't find a fuel cell that fit behind the diff (above the diff is for "storage") and seemed to not cost an arm and a leg. Over the summer I had acquired a finger brake and an aluminum spool setup for my trusty Miller 130xp so I decided that I was going to have a go at making my own tank. Everything is .090 5052 sheet. I am reusing a subaru impreza fuel pump hanger and a modified impreza filler neck. The subaru pump strainer doesn't fit, I've run through the catalogs and have 5 or 6 candidates that I am looking at. Venting will be out a 1/4 NPT roll over vent and I'll probably end up sticking a charcoal canister on that as well. Another design change I made through researching tank stuffs was I am going to ditch the adjustable fuel pressure regulator that I bought and replace it with a mk6 VW 2.5L fuel filter with built in regulator. Ford racing specs the ecu at 55 psi (3.8 bar) min and the VW unit is 58 psi (4 bar). I feel like the built in fpr is going to be simpler to run and has a quick connect that the engine fuel line uses anyway.
All the parts ready to go
Attachment:
tank 1.jpg
Attachment:
tank 2.jpg
Attachment:
tank 3.jpg
Attachment:
tank 4.jpg
Attachment:
tank 5.jpg
Attachment:
tank 6.jpg
Attachment:
tank 7.jpg
Baffle and tank "surge plate"
fit in boot
mounting brackets. still need to fab the tank straps
Pressure testing the tank. I have small children so there is plenty of bubble solution and smallish tubs to dip the tank in. Was having issues getting the pump flanges to seal with a used gasket and I didn't want to waste a new gasket. Found 10 pin holes in the tank. Interesting note is that I had a couple holes from welds that were done from the inside of the tank. Overall I am pretty happy with the results. The spool gun took a bit of practice to get the technique right and I managed not to blow through all the welds. Tank should have 8 usable gallons which should be plenty. Shut off is controlled by the pump nozzle sticking into the tank when filling.
Attachment:
tank pin hole test.jpg