![]() The OEM venturi jet pumps will still function as designed, scavenging fuel from the bottom of the tank. The OEM fuel pump hanger (with an upgraded pump) is used to send fuel to the Radium FHST, keeping the FHST collector box filled. ![]() It installs in the opposite side of the fuel tank from the OEM fuel module and works with the OEM module to keep fuel delivery consistent in all conditions. The Radium FHST is the best solution in preventing fuel starvation. However, the OEM fuel module still suffers from slosh resulting in an interruption of the engine's fuel supply. ![]() The OEM fuel module contains the pump, fuel pressure regulator, filter and has 2 venturi jet pumps that draw fuel from both sides of the tank. Gasoline, Methanol, and Ethanol Compliant Integrated 1:1 Adjustable Fuel Pressure Regulator Furthermore the system is compatible with alternative fuels such as E85. No grinding, bending, or modification of the vehicle's sheet metal is required. The Radium FHST can be used with 1 or 2 aftermarket pumps and supplies 1:1 regulated fuel to the engine. So Radium Engineering chose to create a fully functional fuel surge tank INSIDE the OEM tank. But installing a stand-alone FST is difficult in the 370Z due to the open-cabin design, and lack of a firewall between the driver and the rear of the vehicle. A stand-alone surge tank is an excellent device for eliminating fuel starvation issues. This results in unstable fuel pressure and possible engine damage from running too lean. Due to the saddle-bag style OEM fuel tank and insufficient baffling, fuel starvation is common when the vehicle is driven aggressively, such as on a track. Stainless steel M6x1.0mm socket head bolts are included for custom mounting.The Radium Engineering FHST (fuel hanger surge tank) is the ultimate solution for fuel starvation issues in the Nissan Z34 chassis. The underside of the MPFST is suitable for uneven surfaces commonly found in the trunk of a vehicle. Necessary ring terminals and hardware are included with every surge tank. The pump power connections are handled with specially designed high-current electrical studs. Filter socks have been replaced with a stainless steel mesh inlet screen. All internal wires are gasoline, ethanol, and methanol compliant. The pumps are mounted using an anodized aluminum bracket. When fuel enters the MPFST through the "SUPPLY" and "RETURN" ports, it gets redirected and runs tangential through the canister creating a swirl pot. This helps eliminate unwanted air bubbles and fuel foam that can affect fuel pump and engine performance. Up to 3 high flowing fuel pumps can be used in the surge tank. Recently redesigned for 2019, the Radium Engineering MPFST is the perfect solution for high power vehicles experiencing fuel starvation during aggressive driving. This "PUMP OUT" port is 10AN ORB threaded but comes preinstalled with a -8AN male adapter fitting. The "OVERFLOW", "SUPPLY", and "RETURN" ports are all 8AN ORB threaded but come preinstalled with -6AN male adapter fittings. This is an excellent fueling solution for vehicles installing large demand power upgrades such as forced induction.īecause all of the compatible pumps utilize an integrated check valve, the MPFST merges all pumps into a single outlet simplifying external plumbing. The surge tank also provides a quick and easy way to upgade any standard fuel system without opening the stock fuel tank. Excess fuel in the surge tank is returned back to the vehicle's main fuel tank. This volume is maintained by the lift pump as well as the fuel returning from the fuel pressure regulator. The volume of fuel inside the surge tank acts as a buffer to always keep the FST pump(s) supplied with fuel, even if the lift pump starves momentarily. Fuel is supplied to the surge tank by a lift pump, which in most cases is the OEM in-tank fuel pump. A fuel surge tank (FST) is designed to prevent fuel starvation to the engine on vehicles with inadequate fuel tank baffling.
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