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Description 


Click here to download installation instructions (PDF)

PORTS AND FITTINGS

This fuel rail features four ports (both ends and two on the bottom) that are female tapped for 8AN ORB fittings. However, the front port is not useable unless the OEM engine harness is modified.

8AN ORB Adapter Fittings can be found HERE.
8AN ORB Direct Mount Regulators can be found HERE.
8AN ORB Fuel Pulse Dampers can be found HERE.
Fuel Pressure Gauge Adapters can be found HERE.

Appropriate fittings must be selected based on the specific application. Ample space around the fuel rail port(s) is necessary for larger accessories such as fuel pressure regulators, fuel pressure gauges, and fuel pulse dampers. To verify clearance, the dimensional drawings on the product pages can be used as a reference guide.


The Radium fuel rail for the 6-cylinder Toyota 2JZ-GE (Non-Turbo) engine is manufactured with a large 8AN ORB internal bore supporting all horsepower requirements. They are CNC machined from 6063 aluminum, black anodized, and laser etched for a high quality surface finish. For flexibility, the fuel rail features four 8AN ORB ports and is compatible with all fuel types including popular alcohol mixtures such as E85.

NOT compatible with the 2JZ-GTE (Turbo) engine. If looking for the Toyota 2JZ-GTE fuel rail, click HERE.
IMPORTANT: The fuel rail re-uses the factory mounting bolts and plastic spacers. Make sure these are present before beginning installation.


INFORMATION REGARDING OEM FUEL PRESSURE REGULATOR
Late model 2JZ-GE vehicles use a returnless fuel system where the fuel pressure regulator (FPR) is integrated into the pump assembly. However, early model 2JZ-GE vehicles use a traditional fuel system with the FPR mounted directly to the fuel rail. For these setups, an aftermarket fuel pressure regulator will be required.


FUEL INJECTOR FITMENT

OEM TOYOTA INJECTORS ON 2JZ-GE ENGINES
The Radium Engineering fuel rail features 11mm injector bores making it compatible with ALL factory Toyota 2JZ-GE (Non Turbo) fuel injectors. This includes non VVT-i and VVT-i engines as well as air-assist and non air-assist injectors. No modifications are needed. If preparing to use aftermarket fuel injectors, read below.

AFTERMARKET INJECTORS ON 2JZ-GE ENGINES (WITHOUT AIR-ASSIST)
For engines that do NOT use Toyota air assist equipment, use your preferred injector manufacturer's suggestion for OEM equivalent fuel injectors. DO NOT USE THE INJECTORS LISTED BELOW WHICH ARE FOR AIR-ASSIST ENGINES ONLY.

AFTERMARKET INJECTORS ON 2JZ-GE ENGINES WITH AIR-ASSIST
Late model (and California-spec) 2JZ-GE engines use Toyota air-assist emissions equipment. These engines use a unique OEM fuel injector that is not replicated in the aftermarket. Air-assist intake manifolds require the Radium injector seats in order to use universal aftermarket fuel injectors, as shown in the picture below. When the provided Radium injector seats are installed into these air-assist intake manifolds, an aftermarket injector that is 60mm long with 11mm upper O-ring and 14mm lower O-ring must be used. The following universal injectors have been verified to be compatible, however there are others on the market that will work that are not listed here.
Injector Dynamics ID1050x-60-11-14
Injector Dynamics ID1300x-60-11-14
Injector Dynamics ID1700x-60-11-14
Injector Dynamics 
ID2000-60-11-14


INCLUDED
20-0371

This part contains the following items:
-Black Anodized Laser Etched Aluminum Fuel Rail
-Injector Seats for Toyota Air Assist Manifolds (x6)

20-0371-PK 
This kit contains the following items:
-FPD-R Fuel Pulse Damper Kit
-8AN Swivel to 6AN Male Fitting
-Inverted Flare Adapter Fitting
-6AN PTFE Feed Hose
-8AN ORB Plug (x2)


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