Radium Top Feed Fuel Rail for Nissan SR20DET S13

Radium Top Feed Fuel Rail for Nissan SR20DET S13

Click Here to Download Installation Instructions (PDF)

This Nissan Silvia/180SX/200SX fuel rail kit is designed specifically for SR20DET S13 style intake manifolds, including the GReddy manifold. For the SR20DET S14/S15 fuel rail kit, go HERE. It features a large 0.69" internal diameter bore to suit even the most fuel hungry engines. 

The rail is CNC machined from solid 6061 aluminum and black anodized for a high quality surface finish. The included hardware mounts the fuel rail to the OEM intake manifold bosses.

The Radium fuel rail converts the OEM side feed fuel injector setup to top feed allowing the use of high flow 14mm O-ring fuel injectors (not included). The kit includes 2 sets of brackets (shown above) to suit multiple height injectors.

IMPORTANT: If installing this fuel rail on an S13/14 Silvia or SR20DET swapped 240SX, you MUST use short (34mm) injectors to avoid hood clearance issues. 

Use the tall spacers to accomodate this size injector:

Below are some of the many fuel injectors that are a direct fitment with this Radium fuel rail kit using the tall spacers:

Injector Dynamics ID725-48-14-14
Injector Dynamics ID850-48-14-14
Injector Dynamics ID1000-48-14-14
Injector Dynamics ID1050x-48-14-14
Injector Dynamics ID1300-48-14-14
Injector Dynamics ID1700-48-14-14
Injector Dynamics ID2000-48-14-14 
Evolved Injection EI550-48-14-14
Evolved Injection EI650-48-14-14
Evolved Injection EI850-48-14-14
Evolved Injection EI1000-48-14-14
Evolved Injection EI1200-48-14-14
Evolved Injection EI1300-48-14-14
Evolved Injection EI2200-48-14-14
Deatschwerks 17U-00-0050-4
Deatschwerks 17U-00-0060-4
Deatschwerks 17U-00-0072-4
Deatschwerks 17U-00-0095-4 
Deatschwerks 16S-12-2200-4 

Use the shorter spacers to accomodate this size injector:

Below are some of the many fuel injectors that are a direct fitment with this Radium fuel rail kit using the short spacers:

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 
Evolved Injection DPI550-38-14-14
Evolved Injection DPI650-38-14-14
Evolved Injection DPI850-38-14-14
Evolved Injection DPI1000-38-14-14
Evolved Injection DPI1200-38-14-14
Evolved Injection DPI1300-38-14-14
Evolved Injection DPI2200-38-14-14
RC Engineering SM2-0310
RC Engineering SM2-0370
RC Engineering SM2-0450
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

The lower billet aluminum injector seats are anodized and laser etched. They are O-ring sealed and designed for 14mm top feed injectors.  This kit is compatible with all fuel types including popular alcohol mixtures such as E85. 
 

INCLUDED: 

All parts listed below are included for a trouble and leak-free installation.

-Black Anodized Aluminum Fuel Rail
-Black Anodized Aluminum 30mm Injector Seats (20-0160-04)
-3x Stainless Steel Mounting Brackets (for tall injectors)
-3x Stainless Steel Mounting Brackets (for short injectors)
-6x Stainless Steel Mounting Bolts

NOTE: This fuel rail kit does NOT come standard with fittings (see port configurations below).

PORT CONFIGURATIONS: 

Use the optional check boxes above and the diagram below to select the appropriate port configuration for your specific application.   

Notes: 
1. To reuse the stock fuel pressure regulator, select 20-0303. Note: Depending on the chassis, the short mounting brackets may be required for hood clearance.
2. If you would like to use a fuel pulse damper in the bottom port, only the 20-0176 FPD-R, 8AN ORB will fit only with the tall injectors brackets. If the larger 20-0177 FPD-XR, 8AN ORB is required, it can be used in the front (or rear) port.
3. If the engine is in a different chassis, hood clearance might be an issue when using the tall injector brackets with the fuel pressure gauge in the top port.

Do I need a pulse damper?
The opening and closing of the injectors creates pressure pulses in the fuel rail, which can lead to unstable fuel pressure. In order to achieve a safe and consistent rail pressure, a pulse damper should be used (especially with high flow injectors). The internal diaphragm will absorb oscillation pulses and stabilize fuel pressure. This correction can be measured throughout the RPM range and can often help an erratic surging idle.
CLICK HERE to learn more.