EVIL ENERGY 5/10/15/20 Gallon Fuel Cell Gas Tank Aluminum with Level Sender 6AN 12FT CPE Fuel Line Kit Black/silver

Q: Does the EVIL ENERGY 20 gallon fuel cell kit come with a fuel pump?

A: No. The 20 gallon fuel cell kit includes the aluminum fuel tank with a pre-installed 0–90 ohm sending unit and anti-slosh foam, 12 ft of 6AN CPE fuel line, 6AN swivel hose ends and AN10 to 6AN adapters. The same contents apply to the 5, 10 and 15 gallon versions. The fuel pump, fuel pressure regulator and fuel filter are sold separately so each part can be sized to the engine: a carbureted engine needs only about 5 to 7 PSI at the carburetor, while an EFI engine such as an LS runs at about 58 PSI, so one pump and regulator rarely suit both. Builders who want those parts matched in advance can start from the EFI fuel system kits.

Q: Can the 6AN CPE fuel line in this fuel cell kit run E85 or E10 pump gas?

A: The 6AN CPE fuel line is built for diesel, race gas and ethanol-free gasoline. It is not compatible with E10, E15, E85 or methanol, because ethanol and alcohol fuels can swell and break down a CPE inner tube over time. Most U.S. pump gasoline is an E10 blend, so read the pump label before filling. For any ethanol blend, order the PTFE line version of this fuel cell kit or plumb the tank with PTFE fuel line.

Q: Is 12 ft of 6AN CPE hose enough for a fuel cell return line?

A: It depends on the layout. Measure the path the hose will actually follow from the tank to the pump, the filters and the engine, including every bend, and allow some slack for engine movement. In many cars and short-wheelbase trucks with a rear-mounted fuel cell, 12 ft covers the supply run. A return-style EFI system needs a second run from the regulator back to the tank, so plan on extra 6AN hose and hose ends for the fuel cell return line. A carbureted setup with no return can often be plumbed with the 12 ft supplied.

Q: Will the 0–90 ohm sending unit in the fuel cell work with a factory fuel gauge?

A: Only when the gauge expects the same signal. The fuel cell sending unit reads 0 ohm at empty and 90 ohm at full. That matches most 1965 to 1997 GM gauges and any aftermarket gauge sold as 0–90 ohm. Many Ford and Chrysler vehicles built before 1987 use 73–10 ohm, later Ford gauges use 16–158 ohm, and many universal aftermarket gauges use 240–33 ohm; those gauges read wrong or backward on this sender. Confirm the gauge range first, then wire the signal lead to the gauge and ground the sender to the chassis.

Q: Which fuel cell size fits a derby car, a drift car or a trail rig?

A: A 5 gallon fuel cell (12.01 × 12.01 × 8.27 in) suits derby cars, karts and short drag sessions; check the event rulebook for tank material and mounting rules. A 10 gallon fuel cell gives drift cars, autocross cars and UTVs more reserve. A 15 gallon fuel cell is a practical middle ground for street and strip swaps and prerunners. The 20 gallon fuel cell is the pick for trail rigs, diesel trucks and long days between fuel stops. Compare all three tank dimensions with the mounting space, not capacity alone.

Q: How much weight does a full 20 gallon fuel cell add to a vehicle?

A: The fuel alone weighs about 120 lb with gasoline (about 6 lb per gallon) or about 140 lb with diesel (about 7 lb per gallon), plus the aluminum tank, hose and mounting hardware. A full 15 gallon tank carries about 90 lb of gasoline, a 10 gallon tank about 60 lb and a 5 gallon tank about 30 lb. That load shifts over bumps, so set the tank on a flat, fully supported surface and fasten it to the vehicle structure.

Q: Where should an off-road fuel cell be mounted on a truck or UTV?

A: Mount an off-road fuel cell low and inside the vehicle structure: between the frame rails, in the bed against the cab wall or on a braced tray in the cargo area. Keep the off-road fuel tank clear of exhaust parts, driveshafts and suspension travel, and shield it from rock strikes if it sits below the frame. Support the whole base of the tank, hold it with straps or brackets tied to structure, and route the vent line upward and away from heat with rollover protection. If the tank shares space with passengers, separate the two with a sealed bulkhead.

Q: Can a 20 gallon fuel cell work as a long range fuel tank?

A: Yes. Plumbed as a second tank, the 20 gallon fuel cell carries up to about 300 miles of fuel at 15 MPG before any reserve, a common reason overland and diesel truck builders add a long range fuel tank. Most setups either move fuel to the main tank with a small transfer pump or switch the engine supply between tanks with a selector valve. Rules for auxiliary fuel tanks on public roads differ by state, and a universal fuel cell does not carry the evaporative emissions hardware of a factory tank, so check state and local requirements for a registered street vehicle.

Q: What is the difference between a fuel cell gas tank and a portable gas can?

A: A fuel cell gas tank is mounted in the vehicle and plumbed to the engine. It has AN ports for the fuel lines and the vent, a sending unit for the gauge and foam to control slosh, so the engine draws from it while driving. A portable gas can only carries fuel; it has no ports, no sender and no mounting provisions, and the fuel has to be poured or pumped into a tank by hand.

Q: When does the CPE fuel cell kit make more sense than a tank-only fuel cell or a complete kit?

A: Choose the tank-only EVIL ENERGY fuel cell gas tank when the hose and fittings are already on the shelf, or when the build needs a 1, 2.5, 8 or 12 gallon size. Choose the CPE fuel cell kit when the tank and its plumbing are needed together and the pump, filter and regulator are already owned or will be picked to suit the engine. Choose a complete fuel cell kit with pump, filters and regulator when the fuel system is starting from nothing.