Radium Dual Port Injection Kit

SKU: 20-0689-00, 20-0689-01 Category:

Description

STOP! WARNING! THIS PRODUCT HAS LEGAL RESTRICTIONS. READ THIS BEFORE INSTALLING!

THIS IS A RACE ONLY PRODUCT MANUFACTURED AND SOLD FOR INSTALLATION ON VEHICLES DESIGNED TO BE USED SOLELY FOR COMPETITION PURPOSES. ONCE THIS PART IS INSTALLED, THE VEHICLE MAY NEVER BE USED, OR REGISTERED OR LICENSED FOR USE, ON A PUBLIC ROAD OR HIGHWAY. IF YOU INSTALL THIS PART ON YOUR VEHICLE AND USE THE VEHICLE ON A PUBLIC ROAD OR HIGHWAY, YOU WILL VIOLATE THE CLEAN AIR ACT AND MAY BE SUBJECT TO PERSONAL CIVIL OR CRIMINAL LIABILITY, INCLUDING FINES OF UP TO $4,819 PER DAY.

IT IS THE RESPONSIBILITY OF THE INSTALLER AND/OR USER OF THIS PRODUCT TO ENSURE THAT IT IS USED IN COMPLIANCE WITH ALL APPLICABLE LAWS AND REGULATIONS. IF THIS PRODUCT WAS PURCHASED IN ERROR, DO NOT INSTALL AND/OR USE IT. THE PURCHASER MUST ARRANGE TO RETURN THE PRODUCT FOR A FULL REFUND.

THIS POLICY ONLY APPLIES TO INSTALLERS AND/OR USERS WHO ARE LOCATED IN THE UNITED STATES; HOWEVER, CUSTOMERS WHO RESIDE IN OTHER COUNTRIES SHOULD ACT IN ACCORDANCE WITH THEIR LOCAL LAWS AND REGULATIONS.

Radium Engineering 20-0689-01 is shown in the first photo, and 20-0689-00 is shown in the second.

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

Fitment Notes

  • 02-14 Subaru Impreza WRX
  • 07-22 Subaru Impreza STi
  • 06-13 Subaru Forester XT
  • 07-12 Subaru Legacy GT
  • 07-12 Subaru Outback XT
  • 05-06 Saab 9-2X Aero
  • 04-06 Subaru Impreza STi – top feed fuel rails and injectors required
  • 05-06 Subaru Legacy GT – top feed fuel rails and injectors required
  • 04-05 Subaru Forester XT – top feed fuel rails and injectors required
  • 04-05 Subaru Outback XT – top feed fuel rails and injectors required

 

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. However, they can also be used in a standard single injector configuration as well. 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 below) make this kit compatible with a wide variety of Subaru EJ intake manifolds.

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. The top auxiliary ports are threaded with 8AN ORB for ancillary accessories. Machined press-fit spacers (shown below) are included to insulate heat transfer into the fuel rails. As shown, all top feed OEM fuel rails are also compatible, including Radium fuel rails. If additional fuel injectors (8 total) are required, the preinstalled 2AN ORB plugs can simply be unscrewed from the upper injector ports and the can be used, as shown below.

NOTE: Fuel rails that convert from side feed to top feed injectors are NOT compatible.

 

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. 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
  • Injector Dynamics ID1300x-60-14-14
  • Injector Dynamics ID1700x-60-14-14
  • Injector Dynamics ID2000-60-14-14

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 ID850-34-14-14
  • Injector Dynamics ID1050x-34-14-14
  • Injector Dynamics ID1300-34-14-14
  • Injector Dynamics ID1700-34-14-14
  • Injector Dynamics ID2000-34-14-14
  •  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

 

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.

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Confirmed Fitment

Year Make Model
Year Make Model
2002 - 2014 Subaru Impreza WRX
2005 - 2006 Saab 9-2X
2006 - 2013 Subaru Forester XT
2007 - 2012 Subaru Legacy GT
2007 - 2012 Subaru Outback XT
2007 - 2021 Subaru Impreza WRX STI