Radium Engineering Fuel surge Tank Nissan 370Z, No Pumps Included Walbro GSS342, AEM 50-1200 - 20-1820

The Radium FHST can be used with 1 or 2 aftermarket pumps and supplies 1:1 regulated fuel to the engine. No grinding, bending, or modification of the vehicle's sheet metal is required. Furthermore the system is compatible with alternative fuels such as E85.

Features
-Drop-In Installation
-Permits 1 or 2 Surge Pumps 
-Integrated 1:1 Adjustable Fuel Pressure Regulator
-Fuel Pressure Gauge
-Fuel Starvation Protection
-High Current Electrical Hardware
-Compatibility with Popular Fuel Pumps
-Anodized Aluminum Construction
-Gasoline, Methanol, and Ethanol Compliant
-Fuel Resistant Tubing and Wiring
-Stainless Steel Hardware

HOW THE FHST WORKS
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. However, the OEM fuel module still suffers from slosh resulting in an interruption of the engine's fuel supply. 
The Radium FHST is the best solution in preventing fuel starvation. 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 OEM fuel pump hanger (with an upgraded pump) is used to send fuel to the Radium FHST, keeping the FHST collector box filled. The OEM venturi jet pumps will still function as designed, scavenging fuel from the bottom of the tank. 
The FHST pump(s) are used to deliver fuel to the engine through an integrated fuel pressure regulator.

As described below, the pump(s) inside the FHST are supplied with fuel from 3 different sources: the pump in the OEM fuel module, the integrated fuel pressure regulator return, and 355LPH one-way fill valves on the bottom of the collector box that allows fuel in, but not out.
This ensures that pump (or pumps) feeding the engine are always supplied with fuel, even in extreme driving conditions.
NOTES: 
1. The OEM venturi system must be used with the Radium FHST. 
2. The OEM fuel module must be upgraded to a pump with at least 340LPH (@ 40psi) rated flow in order for the venturi system to work correctly.
3. Do NOT modify the OEM FPR or OEM venturi jet pump.
4. Starvation will NOT prematurely occur, but the fuel may distribute unevenly in the tank, causing inaccurate fuel level readings.
5. This system can only be used as a traditional "return" style system if 20-0806 is purchased

INTEGRATED FUEL PRESSURE REGULATOR
Because the Nissan fuel system is "returnless", forced induction tuning can be problematic when a 1:1 fuel to boost pressure ratio is not possible. Like the OEM setup, a fuel pressure regulator (FPR) is integrated into the Radium FHST. The difference is the regulator is externally mounted with an adjustment screw and a vacuum port. If an intake manifold vacuum hose is connected, the FHST's built-in fuel pressure regulator will operate at a 1:1 ratio permitting fuel pressure to proportionally increase with manifold (boost) pressure. Conversely, the vacuum port can remain open to atmosphere and pressure will remain constant (like OEM).

The returning low pressure fuel from the FPR is sent back into the FST collector box keeping it full. Also, 2 fuel return orifices are included for fine-tuning the desired fuel pressure to the fuel pumps' flow rate and potential hose plumbing restrictions. Refer to the installation instructions link above for more details.
NOTE: The Radium integrated regulator should be the only FPR in the fuel system.
COMPATIBILITY

2009-2020 Nissan 370Z (RH or LH Drive)
20-0820-00
Walbro GSS342 255lph
AEM 50-1200 E85

Drop-in fuel pump hanger with built-in anti-starvation surge tank. Set up to use brushless fuel pumps from Ti Automotive.

Drop-in fuel pump hanger with built-in anti-starvation surge tank. Set up to use Walbro "255" style pumps.