![]() ![]() 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. Air-assist intake manifolds require the Radium injector seats in order to use universal aftermarket fuel injectors, as shown in the picture below. These engines use a unique OEM fuel injector that is not replicated in the aftermarket. Late model (and California-spec) 2JZ-GE engines use Toyota air-assist emissions equipment. If preparing to use aftermarket fuel injectors, read below.ĪFTERMARKET INJECTORS For 94-98 USDM Supra Non Turbo and 92-97 SC300 2JZ-GE Non VVTI ENGINES (WITHOUT AIR-ASSIST))ĪFTERMARKET INJECTORS ON 2JZ-GE ENGINES WITH AIR-ASSIST This includes non VVT-i and VVT-i engines as well as air-assist and non air-assist injectors. The Radium Engineering fuel rail features 11mm injector bores making it compatible with ALL factory Toyota 2JZ-GE (Non Turbo) fuel injectors. Injector Seats for Toyota Air Assist Manifolds (圆) Black Anodized Laser Etched Aluminum Fuel Rail The package will contain the following items: To reuse this OEM regulator mounted on the Radium fuel rail, purchase 20-0301 FPR Adapter, 8AN ORB, 11mm Bore, 39mm Spacing, M6. However, early model 2JZ-GE vehicles use a traditional fuel system with the FPR mounted directly to the fuel rail. ![]() Late model 2JZ-GE vehicles use a returnless fuel system where the fuel pressure regulator (FPR) is integrated into the pump assembly. INFORMATION REGARDING OEM PRESSURE REGULATOR Make sure these are present before beginning installation. IMPORTANT: The fuel rail re-uses the factory mounting bolts and plastic spacers. NOT compatible with the 2JZ-GTE (Turbo) engine. For flexibility, the fuel rail features four 8AN ORB ports and is compatible with all fuel types including popular alcohol mixtures such as E85. They are CNC machined from 6063 aluminum, black anodized, and laser etched for a high quality surface finish. Air-assist intake manifolds require the Radium injector seats.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. These use a unique OEM fuel injector that is not replicated in the aftermarket. Late model (and California-spec) 2JZ-GE engines use Toyota air-assist emissions equipment.For engines that do NOT use Toyota air assist equipment, use your preferred injector manufacturer's suggestion for OEM equivalent fuel injectors.11mm injector bores (compatible w/ factory injectors).The OEM fuel injectors are compatible, however, using aftermarket injectors requires the use of special Radium-designed injector seats which are included with the fuel rail kit.įactory mounting bosses are used for easy bolt-on installation. The fuel rail features four 8AN ORB ports that can be used for fuel plumbing using -AN hose as well as fuel system accessories like a pressure transducer or a fuel pulse damper. ![]() Because the architecture of the 2JZ-GE intake manifold makes this fuel rail unique from the 2JZ-GTE (turbo), they are not cross-compatible. Radium has released a fuel rail upgrade for the NON-TURBO Toyota 2JZ-GE engines. Toyota 2JZ-GE Fuel Rail by Radium Engineering ![]()
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