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This product is to be used with one of the Radium 20-063X fuel hangers. It is recommended to use a single pump hanger to feed the surge tank. The surge tank can then be equipped with one or two fuel pumps to feed the engine.
The Radium Engineering FHST (fuel hanger surge tank) add-on is the ultimate solution for fuel starvation issues. Due to the saddle-bag style OEM fuel tank and insufficient baffling in late model Nissans, fuel slosh is common when driven aggressively. Unstable pressure resulting in a lean fuel mixture can cause engine damage. A stand-alone surge tank is an excellent device for eliminating fuel starvation issues, but installation can be complex. This add-on is a fully functional fuel surge tank mounted inside the OEM tank.
Simple plug and play connections are all that is required to attach the 2 systems together. The FHST add-on utilizes most of the Radium 20-063X-0X fuel hanger parts (described above). The surge tank can hold 1 or 2 aftermarket pumps including brushless variations. With the addition of the fuel pump in the OEM location, there could be 2-3 pumps inside the gas tank (total). Even with all of the extra fuel pumps, the FHST system is very straight forward and relatively simple to install.
No grinding, bending, or modification of the vehicle is required. Furthermore, the system is compatible with all alternative fuels such as E85.
What keeps the surge tank full? The surge tank fuel pump(s) are supplied with fuel from 4 different sources:
The high flow (low pressure) fuel pump located in the OEM location.
The fuel returning from the fuel pressure regulator (FPR).
The fuel transfer from the integrated venturi jet pump siphon.
The one-way fill valve on the bottom of the surge tank.
FUEL PUMP INFORMATION Both brushed and brushless fuel pumps are compatible with the FHST Add-On. Fuel pumps are not provided but can be purchased from the links below.
Walbro F90000267 E85
Walbro F90000274 E85
Walbro F90000285 E85
Walbro GSS342 255lph
AEM 50-1200 E85
Ti Automotive E5LM (brushless)
ELECTRICAL
External high current fuel pump wiring is provided for installing one FHST pump (1 relay, 1 fuse, and all associated wiring and hardware). To wire in a second FHST pump, a second fuse and relay are required. Consider purchasing Radium 17-0031 DIY Wiring Kit.
There are 2 different FHST kits available. Each is specific to the fuel pump model to be installed. (20-0700/20-0701).
NOTE: Because the fuel pump supplying the FHST (in the original pump location) will now operate at very low pressure (high flow), the OEM external fuel pump wiring will be sufficient for this "lift" pump.
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| SKU:
20-0700
