Twin Fuel Pump Anti Surge Tank

Keep It Flowing

The Fuji Racing Anti-Surge Tank is a highly engineered solution designed for vehicles with standard fuel tanks that cannot be modified. It addresses the common issue of fuel starvation that occurs during aggressive driving maneuvers, such as high-speed cornering or hard braking. Under these conditions, the fuel within the tank can shift dramatically, causing the fuel pump to momentarily lose access to fuel. This situation is particularly problematic for many Subaru owners who have experienced fuel delivery issues when the fuel level drops below half a tank.

While the Spec C in-tank anti-surge housing can be installed as a potential remedy, it often falls short of fully mitigating the problem, especially in track scenarios where consistent fuel delivery is crucial. The Fuji Racing Anti-Surge Tank is engineered to combat fuel surge effectively by introducing an additional 1.2 liters of fuel capacity specifically for the fuel pumps. This surge tank compensates for any fuel starvation the in-tank fuel pump may experience, ensuring that there is always a steady supply of 1.2 liters available to facilitate smooth fuel flow to the fuel rails, thereby enhancing engine performance and reliability.

In the context of fuel management systems, most swirl pots available on the market are designed simply as sealed containers without sophisticated functionality. Their primary role is to capture a continual stream of fuel flowing out of the tank to feed a secondary fuel pump, which in turn supplies fuel to the engine. Should the in-tank pump encounter a temporary loss of fuel pick-up, the swirl pot retains enough fuel to maintain adequate engine operation, thus preventing any interruptions in fuel delivery to the injectors and avoiding potential power loss on the track.

To implement a traditional swirl pot system, the fuel pump must be located outside the tank. This setup necessitates various hose and fitting connections and can introduce extra weight while occupying valuable space within the vehicle’s engine compartment or interior. The Fuji Racing Surge Tank revolutionizes this approach by eliminating the need for any external pumps. Instead, it is designed to house two Fuji Racing fuel pumps (or equivalent Walbro-style pumps) directly within the tank. This innovative design ensures that a stable and consistent fuel supply is delivered to the engine, significantly improving overall performance and responsiveness.

**Technical Information:**

– **Material:** Machined from high-quality 6061 Aluminum Billet, ensuring durability and resistance to corrosion.

– **Finish:** Features a polished casing adorned with the iconic Fuji Racing gold anodized surface, combining aesthetics with functionality.

– **Connector:** Equipped with a motorsport-style quick release connector for easy and reliable fuel line attachment.

– **Wiring:** Utilizes an aircraft-grade wiring loom, enhancing safety and performance in demanding driving conditions.

– **Sealing:** The lid and base are sealed with Viton O-rings, providing a tight seal to prevent leaks and contamination.

– **Mounting:** Comes with an adjustable mounting base plate, allowing for versatile installation options.

– **Ports:** Features a total of five AN6 ports (with the capability to be upgraded to AN8) for various fuel line connections.

– **Fuel Delivery:** Includes two AN6 ports for fuel pump to engine feeds, one AN6 return from the engine port, one AN6 feed from the fuel tank port, and one AN6 return/overflow back to the fuel tank port, ensuring a comprehensive fuel management system.

The Fuji Racing Anti-Surge Tank not only enhances performance but also ensures peace of mind during high-speed driving, making it an essential upgrade for enthusiasts looking to optimize their vehicle’s fuel delivery system.

What's in the kit:

• 1x Surge Tank
• 1x Motorsport Style Wiring Loom
• 2x Fuel Pumps