DUAL PORT INJECTION KIT, SUBARU EJ

This kit is for Subaru EJ race engines that cannot be used on public roads. ECU tuning is required.

Dual port injection (2 per runner) makes this kit a good match for high-power engines using alternative fuels. They can also be used in a standard single injector configuration as well. HOWEVER, A STANDARD FUEL RAIL, SUCH AS 20-0567-02 OR 20-0577-02, MUST BE PURCHASED SEPARATELY.

FUEL RAIL HOUSINGS
These were designed in-house and utilize die-cast manufacturing to achieve shapes and features not possible with other manufacturing methods. The inner bores are perfectly smooth without machining marks.

The outer mounting bosses on the fuel rail housings are designed to provide additional clearance for larger turbo inlet pipes.

The eccentric threaded blocks (shown) make this kit compatible with a wide variety of Subaru EJ intake manifolds.

FUEL RAILS

The fuel rails are CNC machined from solid 6061 aluminum, black anodized, and laser engraved for a high quality surface finish. They are compatible with all fuel types including alcohol mixtures such as E85 and is a necessary modification for those using methanol on high powered engines. The end ports are manufactured with large high flowing 10AN ORB end ports. 10AN ORB swivel adapter fittings can be found HERE. The top auxiliary ports are threaded with 8AN ORB for ancillary accessories. 8AN ORB adapter fittings can be found HERE. 8AN ORB Fuel Pulse Dampers can be found HERE.

Press-fit spacers are included to thermally insulate heat transfer into the fuel rails. As shown, OEM top feed fuel rails are also compatible, including Radium Engineering 20-0567-02 OR 20-0577-02. HOWEVER, THESE ARE NOT INCLUDED AND MUST BE PURCHASED SEPARATELY. NOTE: Fuel rails that convert from side feed to top feed injectors are NOT compatible.

If additional fuel injectors (8 total) are required, the preinstalled 2AN ORB plugs can simply be unscrewed from the upper injector ports and can be used.

FUEL INJECTOR FITMENT

Each fuel rail has 4 injector ports that are machined to permit injectors with 14mm O-rings.

Primary Lower Fuel Injectors
Using the provided adapters, both OEM Subaru or 60mm Bosch EV14 style fuel injectors can be used. To reuse the OEM Subaru injectors, the provided top hat must be installed over the upper OEM injector O-ring as shown below.

To use aftermarket 60mm Bosch EV14 injectors as shown below, the provided injector seat must be installed over the lower injector O-ring.

Below are compatible aftermarket injectors for the lower primary ports.

Injector Dynamics ID1050x-60-14-14 – Click Here!
Injector Dynamics ID1300x-60-14-14 – Click Here!
Injector Dynamics ID1700x-60-14-14 – Click Here!
Injector Dynamics ID2600-60-14-14 – Click Here!

Secondary Upper Fuel Injectors
Only 34mm Bosch EV14 style fuel injectors can be used. Fortunately, many Subaru owners are currently already using Injector Dynamics XXXX.48.11.WRX fuel injectors. If the upper and lower billet caps are pulled off, the base injector is a 34mm Bosch EV14 which can be used. Below are the compatible secondary upper injectors.

Injector Dynamics ID1050x-34-14-14 – Click Here!
Injector Dynamics ID1300x-34-14-14 – Click Here!
Injector Dynamics ID1700x-34-14-14 – Click Here!
Injector Dynamics ID2600x-34-14-14 – Click Here!
Deatschwerks 16U-00-0042-4
Deatschwerks 16U-00-0050-4
Deatschwerks 16U-00-0065-4
Deatschwerks 16U-00-0090-4
Deatschwerks 16M-00-1500-4
Deatschwerks 16M-00-2200-4

SURFACE FINISH

20-0689-01 DUAL-PORT INJECTION KIT, SUBARU EJ, UNCOATED
These fuel rail housings are bare aluminum with a satin finish. If the user would like to add a surface treatment of their own (paint, powder coat, etc) know that die-cast aluminum alloy is not compatible with anodizing.

20-0689-00 DUAL-PORT INJECTION KIT, SUBARU EJ, COATED
These fuel rail housings utilize a Cerakote black coating originally formulated in Oregon, USA for the firearms industry. Cerakote is a state-of-the-art polymer-ceramic composite coating. It is only 0.001″ thick and exceeds powder coat with resistance to abrasion, wear, chemical, and corrosion and is superior in impact strength and hardness.

INCLUDED

Both 20-0689-00 and 20-0689-01 include the following:
-Aluminum Fuel Rail Housings (x2)
-Black Laser Etched Aluminum Fuel Rails (x2)
-Injector Seats for Aftermarket Injectors (x4)
-Injector Hats with Filter Screens for OEM Injectors (x4)
-Insulating Press-In Spacers (x4)
-Aluminum Eccentric Manifold Blocks (x2)
-Dual Port Injection 2AN ORB Plugs (x4)
-Cylinder Head Gaskets (x2)
-Flanged JIS Hex Head Bolts (x4)
-Stainless Steel Hardware
-FKM O-ring Seals

Radium Engineering 20-0689-00 is shown above and 20-0689-01 is shown below.