![]() ![]() This surge tank houses two of the popular and high flow rate Bosch “044” pumps, keeping them submerged over 75% inside the tank. This surge tank solution far exceeds the engineering in found in traditional surge tanks, solving multiple problems versus mounting the pumps outside a tank. ![]() Fuel is only returned to the main tank when the surge tank is 100% full, thus providing a steady supply of fuel. The secondary set of large fuel pumps inside the surge tank draws from this reservoir providing a constant flow. This surge tank works inline with your current fuel system by filling up with fuel from the OEM in tank pump. Furthermore, this added precision will resist diaphragm flutter and optimize pressure stability.Integrated Engineering’s innovative dual surge tank design is essential on modified cars requiring higher fuel output, where effective scavenging is a must. Two interchangeable orifices are included with calculated flow diameters to match the fuel pump flow to the regulator. The FST-R is no taller than a standard fuel surge tank with hoses installed. In this case, the vacuum reference hose is not required. Note: returnless fuel systems commonly use a constant fuel pressure. A vacuum line hooks up to the nipple on the FST-R to achieve 1:1 vacuum reference. Pressure adjustment is done using the adjustment screw located on the top cap of the regulator unit. No additional fuel pressure regulator is required. The side port is the regulated pressure output and is plumbed directly to the fuel rail(s). If the pump is purchased elsewhere, some assembly will be required. If the pump is purchased as part of the FST-R, the surge tank will come fully assembled and will be pressure tested for leaks and ready to be installed. Note: The FST-R is not available in dual-pump configurations. The FST-R can be configured with all 39mm fuel pumps from many leading manufacturers. Like all Radium fuel surge tanks, this universal product can be used on any fuel injected application and is compatible with all fuel types. Furthermore, this system permits cooler fuel temperatures as the fuel is not returning from the hot engine bay. This simplifies the installation, reduces overall cost, reduces weight, and eliminates potential leak points in the fuel system. This revolutionary idea eliminates the need for an external fuel pressure regulator along with the extra fittings and hoses. The high-flow regulator is adjustable and features interchangeable orifice sizes. The FST-R (Fuel Surge Tank–Regulated) is an all new design that houses a single internal fuel pump and has an integrated fuel pressure regulator machined into the top cap. Assembled with stainless steel hardware.Nickel-Plated Electrical Connector with 24″ Flying Leads.Interchangeable regulator orifice sizes to match output of different pumps.Integrated adjustable fuel pressure regulator with 1:1 vacuum reference.Anodized for compatibility with all fuel types.Full CNC aluminum construction with O-ring sealed interfaces.Installing a surge tank is also an easy way to upgrade the fuel pump of a vehicle without opening or modifying the OEM fuel tank. Excess fuel in the surge tank is returned back to the vehicle’s main fuel tank. In the case of the FST-R, the regulator is built in to the surge tank and is recirculating fuel internally. This volume is maintained by the main fuel tank’s (lift) pump as well as the fuel returning from the fuel pressure regulator. The volume of fuel inside the surge tank acts as a buffer to always keep the FST pump supplied with fuel. The FST fuel pump feeds the fuel rail(s). A fuel surge tank (FST) is designed to prevent fuel starvation to the engine on vehicles with inadequate fuel tank baffling. ![]()
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