Guys who removed their stock gas tank?

[Rose Racing]

What material did you use to cover the hole and install your fuel cell??? According to NHRA rule book....(Where OEM gas tank is in the trunk floor, area occupied by OEM
tank may be replaced with material equal to or heavier than OEM
floor.) Sorry this may be a dumb question......

[David Lee]

i went to my local metal supplier and got 18G to fill the holes in the florring and engine compartment.

[rboyle]

The gas tank didn't leave a hole in the floor, it was mounted underneath the floor boards.

[Rory McNeil]

Originally Posted by rboyle

The gas tank didn't leave a hole in the floor, it was mounted underneath the floor boards.

Actually, on many Ford unibody cars like Mustangs and Fairlanes, the factory gas tank drops into a large rectangular hole in the trunk floor, and the top of the gas tank IS the trunk floor.

[Kenney Kelley]

Originally Posted by Rory McNeil

Actually, on many Ford unibody cars like Mustangs and Fairlanes, the factory gas tank drops into a large rectangular hole in the trunk floor, and the top of the gas tank IS the trunk floor.

In that case could you just cut the top of the gas tank off and use it to fill in the hole and it would bolt in where the original tank was plus i think it had ribs in it for strenght and then place the fuel cell on that. Just a thought.

Kenney Kelley

[MR DERBY CITY]

Originally Posted by Kenney Kelley

In that case could you just cut the top of the gas tank off and use it to fill in the hole and it would bolt in where the original tank was plus i think it had ribs in it for strenght and then place the fuel cell on that. Just a thought.

Kenney Kelley

Cut the top of the gas tank ..GEEZ. I don’t think so ……

[Mark Ugrich]

Originally Posted by Kenney Kelley

In that case could you just cut the top of the gas tank off and use it to fill in the hole and it would bolt in where the original tank was plus i think it had ribs in it for strenght and then place the fuel cell on that. Just a thought.

Kenney Kelley

Actually i’ve seen just the opposite. Section the tank and use the lower half. From under the car it looks like it still had the stock tank, then mount the fuel cell inside on top.

[Greg Reimer 7376]

Originally Posted by MR DERBY CITY

Cut the top of the gas tank ..GEEZ. I don’t think so ……

Any time you cut up a gas tank, an explosion hazard is created. The best bet would be to fabricate a replacement panel from 18 gauge steel that would replace the OEM tank. Be sure the tank is outside when any cutting or welding is being done in the shop. Fumes can travel quite a ways and carry a flame back to their source and do damage.DON'T cut or weld on the gas tank itself.

[Mike Gray]

GAS TANK
Must be correct year, make, and model for car used, with stock fuel inlet and outlet locations. Must be in stock location; fuel line and pickup may be resized. Fuel cell permitted; maximum capacity 16 gallons. If fuel cell is used, OEM gas tank must be removed, and a firewall of minimum .032-inch aluminum or .024-inch steel must be installed to totally seal driver compartment from fuel cell. Trunk floor may be modified to accommodate fuel-cell sump.
STK

Section 11A, page 5 Stock Cars
Where OEM gas tank is in the trunk floor, area occupied by OEM tank may be replaced with material equal to or heavier than OEM floor. If OEM gas tank is used, it must remain unaltered.

I read that to say if you use a fuel cell the gas tank must be removed. In the Ford a new trunk floor needs to be used and it can be modified for fuel cell sump.

[Kenney Kelley]

Originally Posted by Greg Reimer 7376

Any time you cut up a gas tank, an explosion hazard is created. The best bet would be to fabricate a replacement panel from 18 gauge steel that would replace the OEM tank. Be sure the tank is outside when any cutting or welding is being done in the shop. Fumes can travel quite a ways and carry a flame back to their source and do damage.DON'T cut or weld on the gas tank itself.

What i was talking about how i would cut the top off the gas tank was run a nitrogen purge in the tank for about an hour then put an O2 Meter ( Oxygen Analyzer) in the tank to make sure the gas fumes are gone. I've seen it done where you run a hose off an exhaust pipe and purge the tank that way also. Then and only then would i cut the tank I'm sure you would do the same.

Kenney Kelley