Ameer Randolph
If you're looking to replace your behind-seat fuel tank with a fuel cell, there are a few options available to you. You can purchase a fuel cell that is designed to fit behind the rear seat of your vehicle, such as the Motobilt YJ Behind the Seat Tank, which maximises the space behind the seat. Alternatively, you could opt for a universal fuel cell, such as the RCI 2161a, which is a rectangular aluminium fuel cell. To ensure a secure mount, you will need to use straps and rubber under the straps and under the cell, giving the fuel cell room to move with the body.
| Characteristics | Values |
|---|---|
| Mounting | The fuel cell should be mounted with straps, with rubber underneath the straps and the cell. |
| Fittings | The fuel cell should have -AN fittings, which are tig welded into place. |
| Tank material | The tank should be made from 16-gauge steel. |
| Tank type | The tank should be a rectangular aluminium fuel cell. |
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What You'll Learn
Mounting the fuel cell securely
One option is to use a mount specifically designed for the fuel cell, such as the Motobilt YJ Behind the Seat Tank, which features two clamp-down bodies that capture the top and all four sides of the tank, bolting securely to the mounting base. These parts are typically CNC Laser Cut from high-strength steel and formed on a hydraulic press break, ensuring a secure fit.
Another option is to use a universal fuel cell, such as the RCI 2161a, which is a rectangular aluminium fuel cell. In this case, a custom mount may be required to secure the fuel cell in place. This could involve fabricating a mount that fits the specific dimensions of the fuel cell and the vehicle.
It is important to note that the fuel cell should be mounted with straps and rubber should be placed under the straps and under the cell to allow for movement with the body. Additionally, a sealant can be used to seal the contact surfaces and ensure a secure fit.
When mounting the fuel cell, it is crucial to consider the fuel pump configuration. Some fuel cells, such as the Motobilt tank, are designed for use with an external-mounted fuel pump, and this should be taken into account when planning the mounting location and configuration.
Overall, securely mounting the fuel cell is a critical step in the replacement process, and it is important to choose a mount or fabrication method that ensures the fuel cell is safely and securely installed in the vehicle.
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Using a filler neck system
When replacing a behind-seat fuel tank with a fuel cell, one of the options for a filler neck system is to purchase a different filler neck system that utilises a 12-bolt, 5.38-bolt circle flange. This can be converted to remote fill. The Motobilt tank features three number 8 -AN fittings on top of the tank which are tig welded into place. The 2 clamp down bodies capture the top and all four sides of the tank and bolt securely to the mounting base. These parts are CNC Laser Cut but from 16-gauge steel. The parts are formed on a hydraulic press break. This mount will ensure your fuel cell is mounted securely.
The Motobilt YJ Behind the Seat Tank will not fit in the Jeep TJ. It would have to be cut and clearanced in a few places. The kit consists of three parts: the main under tank plate and two clamp bodies. The under tank plate is CNC Laser Cut from .125-inch high-strength steel plate. Mounting brackets are included. It is recommended to use Permatex 80016 Form-A-Gasket number 2 Sealant to seal the contact surfaces.
The fuel cell needs to be mounted with straps and rubber should be used under the straps and under the cell so it gives the fuel cell room to move with the body. The RCI 2161a is a universal option that is a rectangular aluminium fuel cell. It was not designed specifically for the Jeep YJ. The Motobilt Jeep YJ fuel tank was designed to fit behind the rear seat and maximise the space behind the seat.
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Using a hydraulic press break
To replace a behind-seat fuel tank with a fuel cell, you will need to mount the cell with straps and use rubber under the straps and under the cell. This will give the fuel cell room to move with the body.
The Motobilt YJ Behind the Seat Tank is specifically designed for the Jeep YJ to maximise fuel capacity while retaining the rear seat. It can be purchased with a mount that consists of three parts: the main under tank plate and two clamp bodies. The under tank plate is CNC Laser Cut from .125-inch high-strength steel plate. The parts are formed on a hydraulic press break. This mount will ensure your fuel cell is mounted securely.
The Motobilt tank features three number 8 -AN fittings on top of the tank which are tig welded into place. It can be converted to remote fill by purchasing a different filler neck system that utilises a 12 bolt, 5.38 bolt circle flange. The optional 2 clamp down bodies capture the top and all four sides of the tank and bolt securely to the mounting base. These parts are also CNC Laser Cut but from 16-gauge steel.
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Using a fuel tank with an external pump
When replacing a behind-seat fuel tank with a fuel cell, you will need to consider the use of an external pump. The Motobilt YJ Behind the Seat Tank, for example, is designed for use with an external mounted fuel pump. This tank features two clamp-down bodies that capture the top and all four sides of the tank, bolting securely to the mounting base. The parts are CNC laser cut from 16-gauge steel and formed on a hydraulic press break.
The Motobilt tank also features three number 8 -AN fittings on top of the tank, which are tig welded into place. These fittings are used to connect the external fuel pump to the fuel cell. When using an external pump, it is important to ensure that the pump is securely mounted and that the connections to the fuel cell are tight and secure.
Another option for a behind-seat fuel cell with an external pump is the RCI 2161a. This is a universal option that is a rectangular aluminium fuel cell. It was not designed specifically for the Jeep YJ, but it can be used as a solution for relocating the fuel tank.
When installing a fuel cell with an external pump, it is important to follow the manufacturer's instructions and ensure that all connections are secure and properly sealed. You may also need to consider the use of a rubber mounting system to give the fuel cell room to move with the body of the vehicle.
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Using a fuel cell with a pick-up tube
When replacing a behind-seat fuel tank with a fuel cell, there are a few things to consider. Firstly, it is important to ensure that the fuel cell is securely mounted. This can be achieved by using a mounting kit that includes an under-tank plate and clamp bodies to capture the top and sides of the tank, bolting it securely to the mounting base.
One option for a behind-seat fuel cell is the Motobilt YJ tank, which was designed specifically for the Jeep YJ to maximise fuel capacity while retaining the rear seat. This tank features three number 8 -AN fittings on top, which are tig welded into place, and is intended for use with an external-mounted fuel pump. The Motobilt tank also includes a pick-up tube as part of its design.
When installing a fuel cell with a pick-up tube, it is important to consider the positioning of the tube within the tank. The pick-up tube should be positioned in a way that allows it to draw fuel from the lowest point in the tank, ensuring that the fuel can be fully utilised. Additionally, the tube should be secured in place to prevent it from moving or becoming dislodged during vehicle operation.
To secure the pick-up tube, it can be clamped or welded in place. If welding is used, it is important to ensure that the welds are of sufficient quality to withstand the stresses of vehicle operation and that they do not compromise the integrity of the fuel cell. It is also crucial to ensure that the tube is properly sealed to prevent fuel leaks. This can be achieved through the use of appropriate sealants or gaskets, such as the Permatex 80016 Form-A-Gasket number 2 Sealant.
Overall, when replacing a behind-seat fuel tank with a fuel cell and utilising a pick-up tube, it is important to consider the secure mounting of both the fuel cell and the tube, as well as the positioning and sealing of the tube to ensure optimal fuel utilisation and prevent leaks.
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Frequently asked questions
You can purchase a fuel cell that is designed to fit behind the rear seat, such as the Motobilt YJ Behind the Seat Tank, which is designed to fit the Jeep YJ.
The Motobilt YJ Behind the Seat Tank is a fuel cell designed to fit behind the rear seat of a Jeep YJ. It maximises fuel capacity while retaining the rear seat.
The Motobilt YJ Behind the Seat Tank is made from 16-gauge steel. The parts are CNC Laser Cut and formed on a hydraulic press break.
The Motobilt YJ Behind the Seat Tank comes with a mount that includes three parts: the main under tank plate and two clamp bodies. The under tank plate is CNC Laser Cut from .125-inch high-strength steel plate. Mounting brackets are included.
No, the Motobilt YJ Behind the Seat Tank is designed specifically for the Jeep YJ. It will not fit in the Jeep TJ without modifications.
