RADIUM Engineering 20-1992-01 FCST-X Fuel Cell Surge Tank with Walbro F90000274 Pumps

The RADIUM Engineering FCST-X (Fuel Cell Surge Tank - 10 Years) is a revolutionary drop-in fuel system solution designed to eliminate fuel starvation in high-performance racing applications using competition fuel cells. This advanced fill plate replacement features a true dual-chamber design with an integrated 2.6-liter surge tank canister, providing continuous fuel delivery even under extreme cornering, acceleration, and braking conditions.

What's Included - Part Number 20-1992-01:

• One (1) Walbro F90000274 450LPH surge tank pump (preinstalled)
• One (1) Walbro F90000274 450LPH lift pump (loose in packaging for custom height adjustment)
• Complete mounting hardware and electrical studs
• Standard 10AN ORB to 8AN male adapter fitting
• 8AN ORB to 6AN male return port fitting
• 12AN ORB to 8AN male roll-over valve

Key Features:

• Fits industry standard 6" x 10" (24-bolt) fuel cell flange opening
• Upgraded 2.6L surge tank capacity (increased from 2.2L)
• Fast service access with only 9 bolts total for lift and surge pump removal
• Integrated lift handle for easy fuel pump module servicing
• Hermetically sealed stainless steel electrical studs for high-current applications
• One-way fill valves (355LPH each) keep surge tank full while preventing back-flow
• All pumps feature check valves preventing fuel back-flow
• Merged single 10AN ORB female threaded outlet port
• Compatible with E85, methanol, and gasoline fuel types
• Optional fuel level sensor and diagnostic indicator ports

Walbro F90000274 Pump Specifications:

• Flow rate: 450 LPH (119 GPH) at 40 PSI
• Operating pressure range: 35-112 PSI
• High-pressure relief valve: 112 PSI (ideal for forced induction)
• Dual-channel turbine design for maximum efficiency
• E85 and flex-fuel compatible
• Supports engines exceeding 750+ horsepower
• Made in USA by TI Automotive

How It Works: The lift pump scavenges fuel from the bottom of the fuel cell and continuously fills the 2.6L surge tank canister. Inside the surge tank, the high-pressure EFI pump delivers fuel to the engine. If the lift pump experiences momentary starvation during hard cornering or acceleration, the volume inside the surge tank keeps the surge pump fed and maintains uninterrupted fuel delivery. The fuel pressure regulator return line also routes back to the surge tank to help maintain optimal fuel levels.

Installation Requirements:

• Fuel cell must have 6" x 10" (24-bolt) flange on top face
• Minimum fuel cell depth: 7.7 inches (196mm) from outer top face to internal bottom
• Professional installation recommended
• Requires fuel cell vent kit (sold separately)
• Requires fuel filler with 3-bolt (59.5mm P.C.D.) flange pattern (sold separately)

This configuration (-01) includes one surge tank pump, making it ideal for high-performance street and racing applications requiring reliable fuel delivery. For higher power demands, consider the -02 (two surge pumps) or -03 (three surge pumps) configurations. The FCST-X represents over 10 years of continuous improvement and is the preferred fuel system solution for professional motorsports teams worldwide.