Radium Engineering FCST, 1 SURGE TANK PUMPS AND 1 LIFT PUMP INCLUDED, WALBRO GSS342 255LPH - Attacking the Clock Racing
Radium Engineering FCST, 1 SURGE TANK PUMPS AND 1 LIFT PUMP INCLUDED, WALBRO GSS342 255LPH - Attacking the Clock Racing
Radium Engineering FCST, 1 SURGE TANK PUMPS AND 1 LIFT PUMP INCLUDED, WALBRO GSS342 255LPH - Attacking the Clock Racing

Radium Engineering FCST, 1 SURGE TANK PUMPS AND 1 LIFT PUMP INCLUDED, WALBRO GSS342 255LPH

RAD20-0990-01

Regular price $779.95 Sale price$740.99 Save $38.96
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Fuel cell surge tank for use inside competition fuel cells. Outfitted for use with Walbro GSS342 style fuel pumps. Lift pump and single feed pump included.

The Fuel Cell Surge Tanks utilize new design features that reduce overall weight by 35.3%. These new additions also improve assembly time. They also use stronger stainless steel lift pump mounting brackets. Furthermore, they are compatible with Radium Engineering's shrouded fuel level sensors.


WHAT IS A FCST?
The Fuel Cell Surge Tank is a drop-in fuel pump system for Radium Engineering's popular fuel cells or any cell that uses the industry standard 6x10 24-bolt fill plate bolt pattern. The FCST is designed to protect EFI vehicles that experience fuel starvation. It is NOT a glorified trap door box with baffles. It features a true dual-chamber fuel tank utilizing a single lift pump and up to 3 surge tank pumps all packaged inside the fuel cell. It provides all the benefits of a traditional external fuel surge tank without safety concerns and plumbing complexity. 


IS THIS COMPATIBLE WITH MY FUEL CELL?
To install a Radium Engineering FCST into a fuel cell, the following criteria must be met:
1. The cell must have the industry standard 6"x10", 24-bolt flange opening.
2. The opening must be on the top face of the fuel cell (i.e. not a side face).
3. The cell depth must be at least 7.7" (196mm) measured from the outer top face to the internal bottom face.


HOW IT WORKS
A lift pump scavenges fuel from the bottom of the fuel cell and pumps it into the 2L surge tank. Inside the surge tank canister, up to 3 EFI fuel pumps can be used to feed high pressure fuel to the engine. If the lift pump starves, the volume inside the surge tank canister will keep the surge tank pumps fed and the engine supplied with fuel. The return from the fuel pressure regulator is also routed to the surge tank canister to help keep it full.

As shown above, there are 3 fill valves integrated to the bottom of the surge tank. These 1-way FKM fill valves are sealed shut unless the fuel level in the cell rises above the fuel level in the surge tank. If this happens, each fill valve opens and sends 355LPH of fuel (1065LPH total) into the surge tank until fuel level reaches an equilibrium. 

Excess fuel in the surge tank simply overflows back into the fuel cell. This dynamic sequence is all done inside the safety of a fuel cell.


FEATURES
Over the years, Radium Engineering has continued to refine the FCST into a robust and highly functional piece of hardware.

-Merged single 10AN ORB female threaded outlet. All pumps use check valves that prevent back-flow in multi-pump applications.
-One-way fill valves located on the bottom of the canister allows fuel in, but not out, keeping the surge tank full.
-Multiple fuel pump options including gerotor, turbine, and brushless DC motor pumps.
-Hermetically sealed high-current stainless steel electrical studs capable of handling all pumps.
-Simplified servicing eliminates sealing washers and fuel cell retaining brackets.
-Full CNC aluminum construction with anodized surfacing for superior corrosion resistance.
-Fuel compatibility: leaded and unleaded gasoline, methanol, ethanol, E85, etc.
-Rollover vent valve protection.
-Optional fuel surge tank level switch and diagnostic LED failsafe port (shown below).


STANDARD FITTINGS

PUMP OUT, 8AN MALE
The fuel pump outlet port is signified by the "PUMP OUT" engraving. It uses 7/8"-14 threads making it compatible with all 10AN ORB fittings. The FCST comes standard with a common 10AN ORB to 8AN male adapter fitting. However, various 10AN ORB adapter fittings can be purchased separately HERE.

RETURN, 6AN MALE
The external "RETURN" port is used for low pressure fuel returning from the FPR. This port uses 3/4"-16 threads making it compatible with all 8AN ORB fittings. The FCST comes standard with a common 8AN ORB to 6AN male adapter fitting. However, various 8AN ORB adapter fittings can be purchased separately HERE

VENT, 8AN MALE
The "VENT" port is tapped with 1-1/16"-12 threads making it compatible with all 12AN ORB fittings. The FCST comes standard with 20-0934 which uses a common 8AN male outlet fitting for standard fuel filling. However, 20-0535 can be purchased separately with a 12AN male fitting for quick fill dry break systems that require a high-flow vent.


WHATS IN THE BOX?
The following comes standard with every FCST variation
-8AN roll over vent valve
-6x10 24-hole FKM gasket
-6AN male return fitting (other sizes sold separately)
-8AN male pump out fitting (other sizes sold separately)
-Fuel level sensor block-off plate
-Fuel level switch block-off plug
-Three FKM 1-way fill valves
-Stainless steel mounting hardware
-Insulated anodized aluminum acorn nuts
-Electrical power wire ring terminals
-Links for compatible fillers (not included), Direct Mount or Remote Mount



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