Stocker Tech Rules Gas Tank & Battery?

[FED 387]

the way I read the rule is if using a stock tank you are only allowed 2 MODIFICATIONS to the tank you can RESIZE the fuel line & the pickup--- it says nothing about sump areas in a stock tank being allowed that I would consider a modification--- NO OTHER MODS ALLOWED--- now if you use a fuel cell many times a sump area will be molded in as part of the design so you will be OK and in addition you must fabricate a metal barrier between the cell and the passenger area---my take on it-- FED387

[Geerhead55]

Originally Posted by FED 387

the way I read the rule is if using a stock tank you are only allowed 2 MODIFICATIONS to the tank you can RESIZE the fuel line & the pickup--- it says nothing about sump areas in a stock tank being allowed that I would consider a modification--- NO OTHER MODS ALLOWED--- now if you use a fuel cell many times a sump area will be molded in as part of the design so you will be OK and in addition you must fabricate a metal barrier between the cell and the passenger area---my take on it-- FED387

I hear you,, if you're going to resize both the fuel line and pickup,, you'd want the correct fittings to finish the resizing,, therefore modifying part of the tank,which is not allowed, so they've created a "grey area" once again, in rules interpetations. I'm not going to tell anyone how to construct their own car,, but if its me,, I'm going with a fuel cell, putting this behind me and moving on to the next area of construction. My 2 cents.
Danny Durham

[Bobby DiDomenico]

Originally Posted by FED 387

the way I read the rule is if using a stock tank you are only allowed 2 MODIFICATIONS to the tank you can RESIZE the fuel line & the pickup--- it says nothing about sump areas in a stock tank being allowed that I would consider a modification--- NO OTHER MODS ALLOWED--- now if you use a fuel cell many times a sump area will be molded in as part of the design so you will be OK and in addition you must fabricate a metal barrier between the cell and the passenger area---my take on it-- FED387

Saw this installation at a cruise night. Pretty scary.

On a car where the factory gas tank is the trunk floor, do they require you to install a metal barrier?

[rboyle]

I ordered a 5 gallon aluminum tank with a sending unit so the original gauge can still work again. Question on the drivers barrier, my car is a hatchback Nova with a trap door where the spare tire used to be recessed about 4". If we cut the tank into the floor cover the bottom of the hole with sheet metal welded in, is the trap door in the floor considered a firewall barrier for the drivers compartment?

[FireSale]

Originally Posted by rboyle

I ordered a 5 gallon aluminum tank with a sending unit so the original gauge can still work again. Question on the drivers barrier, my car is a hatchback Nova with a trap door where the spare tire used to be recessed about 4". If we cut the tank into the floor cover the bottom of the hole with sheet metal welded in, is the trap door in the floor considered a firewall barrier for the drivers compartment?

Be sure the impedance of the tank sender matches the range of the gauge you are going to use. I had a 0-90 sender and a 90-0 gauge. The gauge read backwards...

The rule says the cell must be isolated from the driver's compartment. That usually is a wall of some sort, so ask your local tech before cutting anything. There are smart people here, but it's still just a forum. Techs can bounce you at the gate and "Class Racer told me it's OK" won't float.

Dale

[Rich67stang]

We can run a fuel cell, but cannot sump the oem tank?...Wait...What?

[Bill Belden]

I run a 76 Nova Hatchback, I had a sheet metal box made and cut a hole in the the cover. the box is on a hinge in the rear and dzus fastners in the front. The fuel cell is mounted on brackets on the trunk floor. I used weather stripping to make sure there is a good seal all around the cover and the box.
If you want I'll take some pictures this week of it

Bill

[rboyle]

Originally Posted by Bill Belden

I run a 76 Nova Hatchback, I had a sheet metal box made and cut a hole in the the cover. the box is on a hinge in the rear and dzus fastners in the front. The fuel cell is mounted on brackets on the trunk floor. I used weather stripping to make sure there is a good seal all around the cover and the box.
If you want I'll take some pictures this week of it

Bill

That would be helpful. Thanks.
Rich

[Bob]

Originally Posted by Rich67stang

We can run a fuel cell, but cannot sump the oem tank?...Wait...What?

Yes, any modification to the stock tank is prohibited. "Back in the day", many "modified" tanks were turned into dual area tanks allowing approved fuel in one tank and "un-approved" fuel in the other tank.

Besides, why would you go through the trouble to modify a tank? Most are rusty inside and out....so...you need to buy a new one. Then all the work to hack it up?

Cells are cheap and easy to install. Cells can be poly or aluminum. They can have any size or quantity of outlets and return ports. They come in many shapes and gallon sizes. They can be installed with the built in sump protruding through the floor. They are simply a win-win item. Not to mention there is no fuel spilling out the fill neck on a hard launch and no need to carry 15 gallons to ensure the pickup tube stays covered. Who remembers seeing hard leaving cars pour fuel out on a launch?

Just remember:
The cell must have a ground strap from one of the fuel cap mounting screws down to the body or frame. If your original tank was part of the floor, you must close the floor with metal. The area directly behind the rear seat must be sealed with a sheet of metal or aluminum (for cars with an actual trunk). If you have a hatchback style car, the cell must be sealed in a box or a trunk like area must be built for the tank to be inside of. Just think of it this way, the cell must be in a sealed compartment and the driver must be separate of that sealed compartment.

[Painter]

Bob, you are almost right. The requirement for the grounding wire from the filler to the car does not apply to aluminium tanks.