Sylvie Willis
Electric fuel pumps are generally better at pushing fuel than pulling it, so it is recommended that they are mounted as close to the tank as possible. Some sources suggest that the pump should be mounted below the fuel tank, while others recommend mounting it towards the top of the tank to keep the suction line as short as possible. The height of the pump should fall somewhere between the top and bottom of the liquid fuel load of the fuel cell.
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What You'll Learn
The Holley electric fuel pump should be mounted close to the tank
The Holley electric fuel pump can be mounted anywhere, but it is always preferable to mount it as close to the tank as possible. This is because, if the pump is too far from the tank, it will starve for gas.
Some people suggest mounting the pump below the tank for a gravity feed. However, others have mounted their pumps above the tank without any problems. It is also recommended to isolate the pump from the frame to reduce noise. This can be done using a rubber mount, such as a Lord mount, rather than a rubber washer.
There are a few different methods for mounting the pump close to the tank. One user on the Chevy Tri Five Forum created a simple bracket that attached to the frame and hung the pump close to the tank and low. Another user on the same forum placed their pump just in front of the 4-link x bar, where there was space close to the rear floor pan. This was almost flush with the bottom of the chassis.
The Holley electric fuel pump is a powerful pump that can be mounted anywhere. However, it is always preferable to mount it close to the tank outlet. This allows for easy access to plumbing and electrical connections.
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The pump inlet should be below the tank for gravity feed
When mounting a Holley electric fuel pump, it is important to consider the distance from the tank and the pump inlet's position relative to the tank. While a Holley electric pump can technically be mounted anywhere, it is generally recommended to mount it as close to the tank as possible, with the pump inlet below the tank for gravity feed.
Mounting the pump close to the tank is important to prevent the pump from starving for fuel. A user with experience installing an electric Holley fuel pump recommends mounting it by the fuel tank, as too much distance can result in fuel starvation. This is a common piece of wisdom among those familiar with Holley pumps.
However, it is worth noting that a mechanical pump, which is good at suction, may be a better choice for gravity feed systems. An in-tank pump is also a viable option as it directly draws fuel from the bottom of the tank. These alternatives may be more effective at ensuring consistent fuel delivery compared to an electric pump mounted outside the tank.
When mounting the Holley electric fuel pump, accessibility is also a factor to consider. It is preferable to mount the pump in a location that allows easy access to plumbing and electrical connections. This can facilitate maintenance and future adjustments. Additionally, isolating the pump from the frame using a rubber mount can help reduce noise transmission.
In summary, when mounting a Holley electric fuel pump, it is crucial to consider the distance from the tank. Mounting the pump close to the tank with the pump inlet below the tank facilitates gravity feed and helps prevent fuel starvation. However, mechanical or in-tank pumps may be more effective alternatives for gravity feed systems. Accessibility and noise reduction are also important factors to consider during the mounting process.
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The pump can be placed in the engine bay for easy access
When it comes to mounting a Holley electric fuel pump, there are a few things to consider in terms of placement. Firstly, it is generally recommended to mount the pump as close to the tank "outlet" as possible. This is because electric pumps tend to push fuel rather than pull it, and being closer to the tank ensures a consistent fuel supply. However, a key advantage of the Holley electric pump is its versatility in terms of mounting options. Unlike other pumps, it can be mounted anywhere, giving users more flexibility in their setup.
One popular mounting location for the Holley electric fuel pump is in the engine bay. This placement offers several benefits, with the most notable being easy access. By mounting the pump in the engine bay, users can conveniently access the pump for maintenance, adjustments, or repairs without having to crawl under the vehicle. This accessibility simplifies the process of checking fuel pressure, plumbing connections, and electrical connections, making it a more straightforward process for mechanics and enthusiasts alike.
Additionally, mounting the pump in the engine bay can provide some thermal benefits. The engine bay typically has better ventilation and airflow compared to other areas of the vehicle, which can help dissipate heat generated by the pump during operation. This can contribute to maintaining optimal fuel temperature and may even improve the pump's longevity. Furthermore, having the pump in the engine bay can make it easier to incorporate a fuel pressure regulator, which is highly recommended for the Holley "blue" pump to prevent over-pressurizing the fuel system.
While the engine bay offers convenience and accessibility, it is important to consider potential drawbacks. The engine bay is subject to higher temperatures due to the proximity of various components, and the pump may be exposed to more heat than if it were mounted elsewhere. Additionally, in the event of a collision, the engine bay can be a high-impact area, which may pose a risk to the pump's integrity. To mitigate these concerns, it is advisable to select a mounting location within the engine bay that balances accessibility with adequate clearance from heat-generating components and potential impact points.
Overall, the Holley electric fuel pump's versatility allows users to mount it in the engine bay for easy access without compromising performance. This mounting option provides benefits in terms of maintenance, thermal management, and fuel pressure regulation. However, it is important to carefully select the specific mounting location within the engine bay to avoid potential heat-related issues and ensure the pump's longevity. With proper consideration and installation, the Holley electric fuel pump can deliver reliable performance and convenient accessibility when mounted in the engine bay.
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The pump should be isolated from the frame to reduce noise
A Holley electric fuel pump can be mounted anywhere, but it is preferable to place it as close to the tank outlet as possible. This is because the pump will starve for gas if it is too far away from the tank.
However, mounting the pump close to the tank can also make it noisier. To reduce noise, the pump should be isolated from the frame. This can be done by using a rubber mount, such as a Lord mount, rather than just a rubber washer. Rubber isolator standoffs can be used to absorb vibration and sound before it translates into the metal the pump is mounted to. This will also allow the pump to stay cooler.
Another way to isolate the pump is to use a bracket that has isolators. This can be bolted to the engine, which is the quietest way to run the pump. Rubber insulated bolts can also be used to mount the pump to the frame.
If the pump is still noisy, it may be due to low gas. It is best not to drive with the tank below one-fourth full. The fuel may also be contaminated, which can cause a grinding noise. In this case, the fuel pump may need to be replaced.
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The pump can be placed towards the upper level of the fuel load
The placement of an electric fuel pump is crucial for optimal performance, and while Holley electric pumps are powerful and can be mounted anywhere, there are still some key considerations to keep in mind. Firstly, it is generally recommended to place the pump as close to the tank as possible, preferably below the tank for a gravity feed. This is because, if the pump is too far from the tank, it may starve for fuel.
However, with the Holley pump, you have more flexibility, and it can be placed anywhere as long as it is easily accessible for plumbing and electrical connections. For example, some users opt to mount the pump in the engine bay for convenience and easy access. Additionally, Holley has developed a system that places a pump on each side of the tank to address the issue of fuel transfer between the two sides of modern fuel tanks, which typically straddle the driveshaft.
It is worth noting that the pump inlet's position relative to the tank can impact fuel delivery. For instance, an in-tank pump is advantageous as it directly draws fuel from the bottom of the tank. Furthermore, the type of pump, whether mechanical or electric, can influence the mounting position. Mechanical pumps, for instance, are better at suction and can be effective when mounted by the tank.
When installing a Holley electric fuel pump, it is also important to consider noise reduction. To address this, it is recommended to isolate the pump from the frame using a real rubber mount, such as a Lord mount, rather than just a rubber washer. Additionally, the pump's performance can be influenced by factors such as the type of fuel and the presence of additives, which can impact the pump's flow rate and overall efficiency.
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Frequently asked questions
It is recommended to mount the Holley electric fuel pump as close to the tank as possible, preferably below the tank for gravity feed. However, some users have mentioned that they have mounted it near the top of the tank without any issues.
Mounting the pump close to the tank ensures a consistent fuel supply as electric pumps are designed to push fuel rather than suck it up. This setup also helps to prevent cavitation and reduces the chance of fuel starvation.
Yes, the pump should be mounted vertically and it is important to isolate it from the frame to reduce noise. Additionally, a fuel filter should be placed between the tank and the pump, and a fuel pressure regulator may be required for certain pump models.
