Radium Internal Multi Pump Surge TankSKU: Radium_MPFST
The Radium Engineering Multi-Pump FST is constructed from 100% CNC machined 6061-T6 aluminum and is anodized for long lasting protection from corrosive fuels such as ethanol.
A fuel surge tank (FST) is designed to prevent fuel starvation to the engine on vehicles with inadequate fuel tank baffling. The FST fuel pump(s) feed the fuel rail(s). The volume of fuel inside the surge tank acts as a buffer to always keep the FST pump(s) supplied with fuel. This volume is maintained by the main fuel tank's pump as well as the fuel returning from the fuel pressure regulator. Excess fuel in the surge tank is returned back to the vehicle's main fuel tank. The surge tank also provides a quick and easy way to upgade any standard fuel system without opening the stock fuel tank. This is an excellent fueling solution for vehicles installing large demand power upgrades such as forced induction.
The MPFST can be configured to use up to three fuel pumps. The Walbro F90000274 E85 pumps are shown above (pumps not included). The pumps are mounted using an anodized aluminum bracket. The fuel pump filter socks are retained. The FST incorporates a multi-pin high amperage sealed electrical bulkhead connector. All internal wires are gasoline, ethanol, and methanol compliant. The internal hoses are a special fluoroelastomer formulation that resists permeation internally and externally making it submersible in all types of fuel.
Green fittings signify the fuel pump outlets. These are bespoke adapters which are only available in -6AN male. The remaining black port fittings are used for fuel entering and exiting the tank. These are included in -6AN male as well. However, if -8AN and/or -10AN port fittings are required, they can be purchased separately. If only 2 pumps are used, a plug is included to cap the unused fuel pump outlet fitting.
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