FCST-X fuel cell surge tank, 2 surge pumps, 1 lift pump included, Walbro GSS342, Radium Engineering

LEGACY FCST FEATURES The features listed below are retained from previous fuel cell surge tanks. - Single fused 10AN ORB female outlet. All pumps use check valves that prevent backflow. One-way fill valves (355 lph each) allow fuel to enter but not exit, 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 maintenance eliminates fuel cell sealing washers and retaining brackets. Full CNC aluminum construction with anodized surface for superior corrosion resistance. Fuel compatibility: leaded and unleaded gasoline, methanol, ethanol, E85, etc. Optional fuel surge tank level switch and diagnostic LED safety port. Rollover protection via vent valve.

NEW FEATURES: In addition to all previous FCST features, the new FCST-X version is packed with innovations. Quick lift and access to the surge pump (9 bolts total). Integrated lift handle for fuel pump maintenance. Lightweight surge tank increased from 2.2L to 2.6L - Compatible with up to 4 brushless fuel pumps - Up to 4 Bosch BR540 (DW400) fuel pumps - Up to 3 Ti Automotive E5LM brushless pumps - Up to 4 Bosch (DW440) brushless pumps - Compatible with 16AN inlet mechanical pumps - Easily interchangeable pump modules (sold separately) - Compatible with level sensors with cover - Designed with fewer potential leak points - Improved fluid control for rapid filling - Optimized internal fluid management - Improved rollover protection - Anti-rotation electrical terminals

WHAT'S IN THE BOX? The following comes standard with every FCST-X variant: - 6x10 anodized aluminum plate - Anodized aluminum surge tank pump cover - Anodized aluminum lift pump cover - Anodized aluminum service handle - Anodized aluminum level sensor plate - Anodized aluminum surge pump bracket - Stainless steel lift pump brackets (shallow and deep) - Lift pump and fuel surge pump filters - 8AN anodized aluminum rollover vent valve - FKM refueling rollover protection seal - 24-hole 6x10 FKM sealing gasket - 8AN ORB to 6AN male return fitting - 10AN ORB to 8AN male pump outlet fitting - 2AN ORB fuel level switch plug - FKM one-way fill valves (x3) - Anodized aluminum blind nuts - Ring terminals for electrical wires

20-1990-00 This FCST-X does not include fuel pumps. It can house up to 3 surge pumps and 1 lift pump from the following:

PUMP COMPATIBILITY: Walbro GSS342, AEM 50-1200, *Deatschwerks DW440*. Use the electrical connector supplied with the pumps.
20-1990-02 This FCST-X comes pre-assembled with 1 Walbro GSS342 lift pump and 2 Walbro GSS342 surge pumps.

20-1990-03 This FCST-X comes pre-assembled with 1 Walbro GSS342 lift pump and 3 Walbro GSS342 surge pumps.

20-1991-00 This FCST-X does not include fuel pumps. It can house up to 3 surge pumps and 1 lift pump of the following types. NOTE: If the optional fuel level switch is used inside the surge tank, only 2 surge pumps and 1 lift pump can be used.

PUMP COMPATIBILITY: **Bosch BR540 - *Deatschwerks DW400*. Use the electrical connector supplied with the pumps. For the lift pump, use the mesh filter supplied with the pump. **Because this pump does not include an integrated check valve, multiple surge pumps must be operated simultaneously (not in stages).

20-1992-00 This FCST-X does not include fuel pumps. It can house up to 3 surge pumps and 1 lift pump of the following types:

PUMP COMPATIBILITY: Walbro F90000267, Walbro F90000274, Walbro F90000285, Walbro F90000295. Because this pump does not include an integrated check valve, multiple surge pumps must be operated simultaneously (not in stages).

20-1992-01 This FCST-X comes pre-assembled with 1 Walbro F90000274 lift pump and 1 Walbro F90000274 surge pump.
20-1992-02 This FCST-X comes pre-assembled with 1 Walbro F90000274 lift pump and 2 Walbro F90000274 surge pumps.

20-1992-03 This FCST-X comes pre-assembled with 1 Walbro F90000274 lift pump and 3 Walbro F90000274 surge pumps.

20-1993-00 This FCST-X does not include fuel pumps. It can house up to 2 surge pumps and 1 lift pump of the following types:
SURGE PUMP COMPATIBILITY: *Ti Automotive E5LM (check valves included) LIFT PUMP COMPATIBILITY: *Ti Automotive E5LM - **Walbro F90000267 - **Walbro F90000274 - **Walbro F90000285 - **Walbro F90000295 *This pump requires a brushless controller. These usually come included as standard when purchasing the pump. See Ti Automotive BKS1001. **For these pumps, it is recommended to use the Radium Engineering 14-0143 sock filter.
20-1995-00 Two 80 µm (micron) filters are included for two 10AN (5/8") ports. If the supplied 16AN (1") port is used, an external filter will need to be purchased. The surge tank can be configured to use any combination of the following options:

SURGE TANK COMPATIBILITY: - (1) 10AN port (shown below) for an external inline pump or mechanical pump.

- *(2) 10AN ports for an external inline pump and/or mechanical pump. - (1) 16AN port for an external inline pump or mechanical pump. - *(1) 16AN port and (1) 10AN port (shown below) for an external inline pump and/or mechanical pump.

*An electric pump can be used to prime a mechanical pump (for faster engine start-up) when two of the ports are used. This FCST-X does not include a fuel pump for the lift pump. It is compatible with the following lift pumps: Walbro F90000267, Walbro F90000274, Walbro F90000285, Walbro F90000295.

Instruction PDF