Mercedes Mullins
When it comes to routing Fitech fuel lines, there are several factors and options to consider. The placement of the fuel pump hose and the type of fittings used are key aspects. Some car owners opt for mounting the FCC on the radiator support area, while others choose to place it in the corner closest to the fuel pump for a more direct route. The choice between straight or angled fittings, as well as the consideration of fuel line size and pressure requirements, are also important factors that influence the routing of Fitech fuel lines.
| Characteristics | Values |
|---|---|
| Fuel line placement | On the right side |
| Fuel pump hose | Can be routed to the FCC |
| Fuel line fittings | Straight or angled |
| Fuel filter | Required; options include Tanks Inc. Fuel Filters FF-10-KIT or Fitech's 30-micron filter |
| Fuel line size | Options include -6AN, -8AN, or 1/2" fuel hose |
| Fuel pressure | FiTech system runs at 58 psi |
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What You'll Learn
Fitech Fuel Command Center routing
When it comes to Fitech Fuel Command Center routing, there are a few things to consider. The fuel lines to the Fitech are on the back, so the side doesn't matter. However, it's important to avoid running fuel lines along with the inside of the 4-inch main tubes as it will be necessary to go up and over the rear 4-inch cross tube, which is where the floor under the seat is located. This can cause issues with space. It's also worth noting that running fuel lines through the transmission tunnel can be problematic if the drive shaft ever fails.
Some people choose to mount the FCC on the radiator support area, which provides a straight shot to the FCC and back to the FI unit. This can be a convenient option. Another option is to use a regulator/filter, which allows you to cap off the return on the throttle body and have just the feed line to route to the throttle body. This negates the need for a return line.
When it comes to the fuel lines themselves, there are a few options to consider. Some people choose to use stainless steel lines, while others prefer flex lines. It's also important to consider the fittings, with some people opting for straight fittings, and others using 45-degree fittings. The size of the lines is also important, with some people opting for -6AN or -8AN lines, depending on the pump and the flow required. It's also important to consider the fuel filter, with some people recommending a 10-micron filter to protect injectors, while others suggest a 30-micron filter.
Overall, there are a few things to consider when routing Fitech fuel lines, including the location of the lines, the type of fittings, and the size of the lines. It's important to plan carefully and consider all the options before finalizing the parts list and beginning the installation.
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Running fuel lines through the transmission tunnel
One advantage of running fuel lines through the transmission tunnel is that it provides a level of protection for the lines. With the lines running through the tunnel, they are less likely to be damaged by road debris or other external factors. This can improve the safety of the vehicle by reducing the risk of fuel line leaks or ruptures, which could potentially lead to fires.
Another consideration is the position of the fuel lines in relation to the drive shaft. Some people recommend keeping the fuel lines away from the drive shaft, clutch, and transmission to avoid potential damage in the event of a failure. However, others argue that running the fuel lines along the top of the transmission tunnel is safer, as it keeps them away from road debris and reduces the chances of being ripped off by external factors.
When running fuel lines through the transmission tunnel, it is important to follow the guidelines and regulations specified in the sanctioning body rule books. These rules are in place to ensure the safety and integrity of the fuel lines. For example, the rules may specify that the fuel lines must be armoured and positioned inboard of the frame rails.
Overall, while there are varying opinions on the best way to route fuel lines, running them through the transmission tunnel can provide benefits in terms of protection and safety. However, it is important to carefully consider the specific vehicle design and potential failure points to make an informed decision.
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Using a regulator/filter to cap off the return on the throttle body
If you are installing a throttle body and are unsure what to do with the nipple on the fuel pressure regulator, you may need to cap off the return port. The nipple is the silver knob with a nipple that sits between the inlet/return ports on the passenger side.
Some throttle bodies come with three metal screw-on caps for the inlets, and you can reuse one of these caps for the return port. If you did not receive a cap, you can contact the manufacturer and request one.
If you are experiencing issues with your fuel pressure regulator, you may need to replace it or modify it. You can also install a pressure gauge in your supply line to help diagnose any problems. This gauge should be placed just before the throttle body fitting, or you can fit it to the alternate supply port on the throttle body.
If you are upgrading your fuel system, you may need to install an external regulator. You can use a Fuel Rail Adaptor, which suits the Bosch Regulator Port and allows fuel to pass through an external regulator. This setup can help maintain a continual flow through the throttle body and avoid fuel passing through two regulators.
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Fuel line placement for EFI
Fuel line placement is an important consideration when setting up an EFI system. The placement of the fuel lines will depend on the specific vehicle and the components used in the EFI system. Here are some general guidelines and considerations for fuel line placement when installing an EFI system:
It is recommended to use hard lines, such as steel or nylon, wherever possible, securely mounted to the chassis. This provides a sturdy and reliable fuel delivery system. Flexible lines, on the other hand, should be used for connections where movement and vibration are factors, such as between the chassis and engine, or where they facilitate the removal or installation of components like the filter housing, pump, or sender.
When routing the fuel lines, it is important to consider the path they will take. In some cases, it may be necessary to run the lines through the transmission tunnel. However, it is worth noting that this could put them in a vulnerable position if the drive shaft ever fails. Another option is to run the lines along the inside of the main tubes, but this may require going up and over the rear cross tube, potentially causing clearance issues.
The size of the fuel lines is also an important consideration. The feed line, which supplies fuel to the engine, typically requires a larger diameter than the return line. For example, a 3/8" feed line is commonly used for TBI EFI systems, while a smaller 5/16" line can be used for the return. Additionally, the type of hose used should be EFI-specific, capable of handling the required fuel pressure, and able to withstand the operating conditions, such as extreme heat.
When converting from a carbureted system to EFI, it is possible to reuse some of the existing fuel lines. However, it is important to ensure that the lines are compatible with the new system and that any necessary adaptations are made. For example, when using a FiTech system, the fuel lines are located at the back, so the side of the lines may not be as important. Nonetheless, it is always a good idea to refer to the manufacturer's instructions and recommendations for the specific EFI system being installed.
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Fuel filter options
One option is the Fitech 80111 Inline Fuel Filter, which is designed to be mounted between the fuel tank and the fuel pump. This filter is made from high-quality billet aluminum with a black anodized finish for maximum protection. It features a stainless steel mesh element or a sintered bronze cartridge and is available in different micron ratings to fit your specific fuel system needs.
Another option is the Fitech 100-micron In-line Fuel Filter, which also features a black anodized finish. This filter is made from high-quality aluminum and is designed to keep your fuel clean.
When considering fuel filter options, it is important to take into account the specific requirements of your vehicle and fuel system. For example, some vehicles may require a different micron rating for the fuel filter, or there may be space constraints that dictate the type of fuel filter that can be used.
Additionally, there are other fuel filter options available on the market that are compatible with Fitech fuel lines. For example, universal fuel filters, such as the AloneGoer 6pcs Universal 1/4" Fuel Filter, can be used with a range of vehicles, including motorcycles, lawnmowers, and ATVs. These fuel filters typically come with fuel line hoses and clamps to ensure a secure and proper fit.
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Frequently asked questions
There are a few different ways to route Fitech fuel lines. One option is to use a regulator/filter, which will allow you to cap off the return on the throttle body and have just the feed line to route to the throttle body. Another option is to use a Fitech Fuel Command Center (FCC), which negates the need for a return line. Additionally, you can consider using your existing low-pressure pump to feed a high-pressure pump and a recirculation tank with a regulator under the hood.
Some people recommend placing the FCC in the corner closest to the fuel pump for a straight shot to the FCC and back to the FI unit. However, it is advised to avoid routing the hose over or through the belts in case one breaks.
The fuel line size depends on the pump you are using. For a high-flow pump, a larger line size such as -8AN is recommended. For a lesser pump, a smaller size such as -6AN may be appropriate. Fitech inlet and return ports are typically -6AN.
It is recommended to use a 10-micron fuel filter to protect injectors. While Fitech sells a 30-micron filter, some users do not trust their technical information. Tanks Inc. offers a universal 10-micron fuel filter kit.
When routing EFI fuel lines, it is important to consider the placement of the lines. In a Roadster, the fuel lines can be run on the right side, while the brake lines can be on the left side of the frame rails. In a coupe, the lines can be routed through the transmission tunnel. Additionally, straight fittings are typically suitable for the fuel tank.
