Still have heat issues on a long drive on a hot day. Work great for a short drive around town. I can think of about 3 of these that have been tried, I know the FiTech one for sure. The rest of the fuel just gets circulated over and over again. The only cool fuel that gets added to the system is make up fuel for what is burned. While the idea of the surge tank is appealing, heat is still an issue. Personal experience and friends experience. If you're running a FiTech, Hyperfuel, or similar surge tank, I would LOVE to hear from you. Mounting location is also a concern with a unit that tends to be 10-15" tall and 6-8" wide. The minuses I see at this point are added failure points with the use of two fuel pumps (I already carry a spare for the existing Carter electric pump), and the field replaceability of the pump in the surge tank. This labor savings is immensely attractive to me, especially since all that underside plumbing would have to be done on my back in the driveway during winter. No dropping fuel tanks (I have two), drilling tanks or sending units for return fittings, running return line/hose, or plumbing & wiring 6-way tank selector valves. All one has to do is mount the surge tank, hook up the existing fuel line, and run supply and return to the FI. In the course of researching FI systems, I discovered surge tanks: they have an on-board fuel pump and return which allows use of the existing fuel supply pump & plumbing. Optional fuel surge tank level switch and diagnostic LED failsafe port (shown below).I'm looking at an add-on FI system for the IH camper after becoming fed-up with carburation in the mountains surrounding Leadville, CO late this summer. Dynamic safety vent valve with rollover protection and fuel fill shut-off protection. Fuel compatibility: leaded and unleaded gasoline, methanol, ethanol, E85, etc. Full CNC aluminum construction with anodized surfacing for superior corrosion resistance. Simplified servicing features eliminating nylon sealing washers and fuel cell retaining brackets. Hermetically sealed high-current stainless steel electrical studs capable of handling all pumps. Multiple fuel pump options including gerotor, turbine, and brushless DC motor pumps. One-way fill valves located on the bottom of the canister that allows fuel in, but not out, keeping the surge tank full. All pumps use check valves that prevent back-flow in multi-pump applications. Merged single 10AN ORB female threaded outlet. Over the years, Radium Engineering has continued to refine the FCST into a robust and highly functional piece of hardware. This dynamic sequence is all done inside the safety of a fuel cell. If this happens, each fill valve opens and sends 355LPH of fuel (1065LPH total) into the surge tank until fuel level reaches an equilibrium.Įxcess fuel in the surge tank simply overflows back into the fuel cell. 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. There are 3 fill valves integrated to the bottom of the surge tank. The return from the pressure regulator is also routed to the surge tank canister to help keep it full. 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. Inside the surge tank canister, up to 3 EFI fuel pumps can be used to feed high pressure fuel to the engine. The cell depth must be at least 7.7" (196mm) measured from the outer top face to the internal bottom face.Ī lift pump scavenges fuel from the bottom of the fuel cell and pumps it into the 2L surge tank. The opening must be on the top face of the fuel cell (i.e. To install a Radium Engineering FCST into a fuel cell, the following criteria must be met:ġ. The cell must have the industry standard 6"x10" 24-bolt flange opening.Ģ. It provides all the benefits of a traditional external fuel surge tank without safety concerns and plumbing complexity. 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 is NOT a glorified trap door box with baffles. The FCST is designed to protect EFI vehicles that experience fuel starvation. 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.
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