![]() Excess fuel in the surge tank is returned back to the vehicle's main fuel tank.Īll adapter fittings on top of the FST are 6AN (9/16"-18) male.ġ. This volume is maintained by the main fuel tank's 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. It is also an excellent fueling solution for vehicles installing large fuel demand power upgrades such as forced induction. The surge tank also provides a quick and easy way to upgade any standard fuel system without the need to modify the stock fuel tank or pump. It does not store any personal data.Radium: FST, Fuel Surge Tank, Single PumpĪ fuel surge tank (FST) is designed to prevent starvation to the engine on vehicles with inadequate fuel tank baffling. The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. The cookie is used to store the user consent for the cookies in the category "Performance". This cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Other. ![]() The cookies is used to store the user consent for the cookies in the category "Necessary". The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". The cookie is used to store the user consent for the cookies in the category "Analytics". These cookies ensure basic functionalities and security features of the website, anonymously. Necessary cookies are absolutely essential for the website to function properly. +++ We are open! / Counter Sale Closed (check our COVID-19 updates) +++. ![]() 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. Three 6AN male fittings (8AN can be purchased separately) 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 Radium E85 FST-R, Fuel Surge Tank with Integrated FPR
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