Katerina Swanson
In-tank fuel pumps can be used with a carburetor, and they offer several advantages over external pumps. Firstly, they are submerged in fuel, which keeps them cool and prolongs their lifespan by eliminating hot fuel-related issues. Secondly, they are much quieter than external pumps, addressing the issue of noise generated by the pump. However, there are some challenges to consider when using an in-tank fuel pump with a carburetor. The installation process may require a new gas tank or significant modifications to the existing tank, adding to the overall expense. Additionally, it is important to ensure that the in-tank pump is compatible with the carburetor and has the correct low-pressure spring installed in the fuel pressure regulator. Overall, while in-tank fuel pumps offer benefits in terms of performance and noise reduction, there are also cost and compatibility considerations to keep in mind.
| Characteristics | Values |
|---|---|
| Can an inside tank fuel pump be used with a carburetor? | Yes, it is possible to use an in-tank fuel pump with a carburetor. |
| Why use an in-tank fuel pump? | To reduce noise, improve cooling, and prevent the pump from running out of prime. |
| Recommended products | Walbro, Aeromotive, Tanks Inc, Holley, Vaporwerx |
| Considerations | Cost, ease of replacement, and fuel pressure regulator compatibility. |
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What You'll Learn
In-tank pumps can be used with classic cars
In-tank fuel pumps can be used with classic cars, but there are a few things to consider before making the switch. Firstly, the key issue is not the size of the pump but the fitment. In-tank pumps have special flanges that allow them to bolt into the tank, so you'll need to ensure your tank is compatible or find an aftermarket company that can construct a new tank or modify your existing one.
Another factor to consider is the cost. A new tank and pump can be expensive, so it's important to weigh the benefits against the price. However, in-tank pumps offer several advantages, such as reduced noise and improved pump longevity due to the pump being submerged in fuel, which keeps it cool.
If you decide to proceed, it's recommended to use a return-style regulator and set the pressure low enough for the carburetor. The Walbro 255 lph pump is a popular choice for classic cars, as it's quiet and can support up to 600 hp. With the right setup, you can enjoy the benefits of a more modern fuel pump while preserving the classic style of your vehicle.
Classic Performance Products (CPP) offers a range of fuel pumps specifically designed for classic cars, including the Go Fuel Force Fuel Surge Tank and the High Flow In-Tank Fuel Pump Module. These kits are available for OE-style gas tanks as drop-in setups or as universal setups that convert your stock fuel tank to a modern internal-style pump. With the right research and planning, you can successfully upgrade your classic car with an in-tank fuel pump.
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The key issue is the fitment, not the size of the pump
When considering whether an in-tank fuel pump can be used with a carburetor, the key issue to focus on is the fitment rather than the size of the pump. Automakers initially moved the pump inside the tank to reduce the noise generated by the pump. Additionally, electrical pumps function more efficiently when pushing fuel rather than pulling it, making the placement of the pump inside the tank a natural solution.
The primary challenge with installing a fuel pump inside the tank is that these submerged pumps require special flanges to bolt them securely into the tank. This challenge can be addressed by either constructing a new tank or modifying an existing tank if it is in good condition. Several aftermarket companies, such as Hot Rod City, offer solutions by creating custom tanks or modifying existing ones to accommodate the fuel pump.
It is worth noting that the cost of purchasing a new tank or modifying an existing one can be significant, typically ranging from $400 to $600 or more. Therefore, it is essential to carefully consider the financial implications before deciding to proceed with this modification.
While the size of the pump may not be the primary concern, it is crucial to select a pump that is compatible with your specific carbureted engine. In-tank electric fuel pumps, such as those offered by Aeromotive, have gained popularity in the aftermarket scene. These pumps offer several advantages, including reduced noise, improved cooling, and extended pump life due to being submerged in fuel.
In conclusion, when contemplating the use of an in-tank fuel pump with a carburetor, the central consideration should be the fitment and any necessary modifications to the fuel tank. The size of the pump is less critical, but choosing a compatible pump and considering the associated costs are important factors in the decision-making process.
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EFI pumps can be mounted externally and run at low pressure
The G-Surge tank is another example of an externally mounted pump with a return line to the fuel tank, which keeps the pump cool and extends its lifespan. Its compact size means it can be mounted in a variety of locations, and its tank design allows for a mounting angle of up to 45 degrees.
Some EFI pumps, such as the Bosch F/P, can be rubber-mounted, reducing the noise of the pump. Additionally, the Fuel Command Center is a complete assembly that can be mounted under the hood, and it is significantly quieter than an external pump.
While external pumps can be beneficial in reducing noise, they also have some drawbacks. For example, the external 255 liter-per-hour pump included in the inline kit is simple and versatile, but it can be noisy since it is not submerged in fuel.
When considering the use of an external EFI pump, it is important to note that these pumps are not intended for high-pressure EFI systems, even if the bypass is blocked to force pressure higher.
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Submerged pumps have special flanges that allow them to bolt into the tank
Submersible pumps, as the name suggests, are designed to be submerged in the liquid that they are required to pump out. They are used in a variety of applications, from municipal water systems to personal aquariums. They are also used in oil production to provide a relatively efficient form of "artificial lift", allowing for a broader range of flow rates and depths.
Submersible pumps have several advantages. They can prevent pump cavitation, an issue associated with a high elevation difference between the pump and the fluid surface. They also have a hermetically sealed motor, which is close-coupled to the pump body. This design makes them superior for submersible applications. Additionally, having the pump submerged in fuel keeps it quiet, cool, and prevents it from running out of prime.
In the context of using an in-tank fuel pump with a carburetor, the key issue is not the size of the pump but the fitment. Automakers moved the pump inside the tank to reduce the noise generated by the pump. Electrical pumps work better when pushing fuel, so placing the pump inside the tank was a natural solution. However, the key problem with this setup is that these submerged pumps have special flanges that allow them to bolt into the tank.
Several aftermarket companies offer solutions for this issue. Hot Rod City, for example, manufactures an aftermarket baffled aluminum tank with a fuel injection flange that allows for the installation of a stock-type submerged pump. Tanks Inc. also offers a similar solution with their Walbro 450 pump. These options, however, can be costly, with the tank alone costing at least $400.
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A high-pressure pump will give consistent fuel pressure
Yes, an in-tank fuel pump can be used with a carburetor. The key issue is not the size of the pump but the fitment. Automakers moved the pump into the tank to reduce the noise generated by the pump. Electrical pumps work more efficiently when pushing fuel rather than pulling it, so placing the pump inside the tank is a natural solution.
There are a few things to consider when using an in-tank fuel pump with a carburetor. One is the cost, as these setups can be expensive. Additionally, the key problem with putting a fuel pump in the tank is that these submerged pumps have special flanges that allow them to bolt into the tank. Several aftermarket companies offer solutions, such as constructing a new tank or modifying a used tank if it is in good condition.
Some specific examples of in-tank fuel pumps that have been used with carburetors include the Walbro 255lph pump and the Walbro 450, which users have reported as being quiet and effective. Another example is the Aeromotive Gen II Stealth Fuel Tank, which is intended for carbureted and fuel-injected engines. It is important to note that these setups can be costly, but they offer benefits in terms of noise reduction and fuel efficiency.
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Frequently asked questions
Yes, an in-tank fuel pump can be used with a carburetor. The key issue is not the size of the pump but the fitment.
An in-tank fuel pump can reduce noise, keep the fuel system cool, and prevent the pump from running out of prime.
Some in-tank fuel pumps that can be used with a carburetor include the Walbro 255lph pump, the Carter electric pump, and the Aeromotive Carbureted Phantom pump.
