20-1170 FUEL PUMP HANGER

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COMPATIBILITY
90-99 BMW E36 316i
90-98 BMW E36 318i
92-98 BMW E36 318is
91-98 BMW E36 320i
95-98 BMW E36 323i
91-95 BMW E36 325i
95-98 BMW E36 328i
92-99 BMW E36 M3

For the BMW E46 Fuel Pump Hanger, go HERE.

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OVERVIEW
This Radium Engineering fuel hanger replaces both RH and LH fuel hat assemblies. It is compatible with 1 or 2 aftermarket fuel pumps. The kit reuses both passive side and active side fuel level sensors. It is also keeps a true saddle tank crossover system using new improved components. No cutting or modifying of the vehicle is required for installation.

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FITTINGS
The merged fuel pump outlet is tapped for 10AN ORB (7/8"-14) female threads on the top plate. However, an SAE quick connecter barb is provided to connect to the OEM feed line, as shown below. 

The fuel return inlet is tapped for 10AN ORB (7/8"-14) female threads on the top plate. However, an 8.5mm barbed adapter (shown below) is provided to connect to the OEM return line. 

All fittings are machined low enough to clear the surrounding area.

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COMPATIBLE FUEL PUMPS
The 20-1170 is configured to be used with 1 or 2 aftermarket fuel pumps. These can be 2-wire brushed fuel pumps or 3-4 wire brushless fuel pumps.

Choosing the best fuel pump is based on the expected engine power output, fuel type (gasoline, E85, etc.), and fuel pressure.

AEM 50-1000
AEM 50-1200
Walbro GSS342
Walbro F90000267 
Walbro F90000274 
Walbro F90000285
*Walbro F90000295
*Ti Automotive E5LM
Protec 11928 / Fuelab 49614
Deatschwerks DW440
Deatschwerks DW81

*These pumps do not feature an integrated check valve. If a check valve is necessary, purchase 20-1534 (separately) to replace the fitting(s) under the fuel hat.

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FUEL STARVATION PROTECTION
Several mechanisms work together to move fuel into the integrated collector and keep it full at all times. This ensures the pump(s) have adequate fuel available, even during aggressive driving. The integrated fuel tank collector is supplied with fuel from 3 different sources:
1. The OEM collector bowl has a labyrinth. This keeps fuel from leaving the collector bowl when cornering.
2. The constant low pressure returning fuel from the regulator activates the venturi jet pump siphon and also fills the collector bowl.
3. The crossover fuel scavenged from the passive side of the tank from the venturi jet pump siphon is constantly filling the collector bowl.

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PRV VENTURI JET PUMP
The OEM venturi jet pump is replaced with an innovative Radium Engineering variation.

The venturi jet pump (shown above) has a built-in PRV (pressure relief valve) to control excessive fuel return flow. This is a common problem when using high flow pump(s) at low loads. This excessive pressure would pop-off the OEM venturi jet pump connection and prevent fuel transfer, ultimately leaving the vehicle stranded. The PRV venturi jet pump also permits low static fuel pressures.

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ELECTRICAL
The custom designed stainless steel electrical studs easily handle the high current demand that compact multi-pin bulkhead connectors lack. They have an anti-rotation feature that prevents the terminals from spinning. These serviceable connections are hermetically sealed and impervious to all standard and exotic fuels. Non-conductive anodized aluminum acorn nuts are provided to prevent any accidental short circuiting. Furthermore, the in-tank wiring is insulated with high quality chemically resistant ETFE. 

NOTES
1. Single pump installations can re-use the OEM fuel pump wiring.
2. It is recommended to upgrade OEM wiring to ensure the single pump is receiving full power and operating at maximum potential.
3. If using a second pump, a new dedicated relay and fuse pump MUST be used.
4. Universal fuel pump wiring kits can be found HERE. Select one for each aftermarket pump.

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FEATURES
-Drop-In Installation
-Aluminum and Stainless Construction
-PRV Venturi Jet Pump Siphon
-Merged 10AN ORB Female Pump-Out Port
-Compatible with Various Pumps
-Brushless Fuel Pump Capable
-Fuel Pump Filter Socks Included
-Capable of Running 1 or 2 Fuel Pumps
-Anti-Rotation Electrical Terminals
-High Current Electrical Hardware
-Gas, Methanol, and E85 Compliant

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FUEL HANGER PLUMBING KIT, BMW E36 E46

COMPATIBILITY
90-99 BMW E36 316i
90-98 BMW E36 318i
92-98 BMW E36 318is
94-00 BMW E36 318ti
91-98 BMW E36 320i
95-98 BMW E36 323i
91-95 BMW E36 325i
95-98 BMW E36 328i
92-99 BMW E36 M3
99-05 BMW E46 316i
98-06 BMW E46 318i
98-06 BMW E46 320i
98-00 BMW E46 323i
01-06 BMW E46 325i
98-00 BMW E46 328i
00-06 BMW E46 330i
03-06 BMW E46 330i ZHP
00-06 BMW E46 M3
03-04 BMW E46 M3 CSL

OVERVIEW
These kits provide all necessary plumbing to and from the engine including a fuel filter, fuel pressure regulator, fuel lines, adapter fittings, and mounting hardware. 

First, a low profile 8AN male banjo fitting is installed to the fuel hanger pump outlet, as shown below.

8AN PTFE fuel hose runs to the LH side over the top of the fuel tank. It then turns downward and routes along the underside of the chassis through 2 billet fuel/brake line retainers.

A new billet high flow fuel filter is mounted in the OEM location. Elements are either 10 micron stainless (-03) or 6 micron microglass (-05). Go HERE for more filter element information. 

From the fuel filter outlet, another 8AN PTFE fuel hose runs into the engine bay and towards the front of the fuel rail (not included). A low profile 8AN male banjo fitting is installed to the fuel rail, as shown below.

A direct mount fuel pressure regulator and gauge is mounted at the rear of the fuel rail.

A new 6AN return hose with an SAE quick connect adapter is constructed to route fuel from the direct mount regulator to the rear. A low profile 6AN male banjo fitting is installed to the fuel hanger return port, as shown below.

New vacuum tubing is provided to replace the OEM hard lines.

INCLUDES
-DMR-RA Fuel Pressure Regulator
-0-100psi Fuel Pressure Gauge
-Filter (-03 Stainless or -05 Microglass)
-8AN Fuel Filter Adapter Fittings
-8AN and 6AN Fuel Hanger Fittings
-Fuel Brake Line Retainers (x2)
-8AN Fuel Rail Adapter Fitting
-8AN PTFE Fuel Feed Hoses
-6AN Fuel Return Hose
-6AN SAE Quick Connect
-6AN PushLok Hose End
-Stainless Steel Hardware
-5/32" Vacuum Tubing
-Misc Adapter Fittings

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