The 1994 Honda Integra is a legendary vehicle, renowned for its performance and tunability. For enthusiasts looking to push the limits of this iconic car, upgrading the fuel system is a critical step. The Radium Engineering Fuel Pump Hanger offers a superior, drop-in solution for 94-01 Acura Integra and 92-00 Honda Civic models, ensuring reliable fuel delivery for even the most demanding setups. This guide will explore the features and benefits of this high-performance fuel hanger, designed to maximize your Integra’s potential.
Radium Engineering Fuel Pump Hanger: An Overview
The Radium Engineering fuel pump hanger is engineered as a direct replacement for the factory fuel pump assembly in 94-01 Acura Integra and 92-00 Honda Civic vehicles. This innovative design eliminates the need for any modifications to your vehicle’s sheet metal or fuel tank, making installation straightforward and reversible. Unlike universal kits that often require cutting or welding, the Radium hanger is specifically tailored for these Honda and Acura models, guaranteeing a perfect fit and hassle-free upgrade.
A key feature of this fuel hanger is the strategic positioning of the fuel pump within the factory collector bowl. This thoughtful design element provides exceptional fuel starvation protection, especially during aggressive driving or cornering when fuel sloshing can become a concern. By maintaining consistent fuel supply to the pump, the Radium hanger ensures optimal engine performance and reliability, even under demanding conditions.
Broad Compatibility: Integra and Civic Applications
This fuel pump hanger is designed for wide-ranging compatibility, accommodating all models and trims of the following vehicles, regardless of Right Hand Drive (RHD) or Left Hand Drive (LHD) configurations:
- 94-01 Acura Integra (All Models/Trims/RHD/LHD)
- 92-00 Honda Civic (All Models/Trims/RHD/LHD)
This extensive compatibility makes it a versatile upgrade for a large number of Honda and Acura enthusiasts, simplifying the process of enhancing their fuel systems. Whether you own a base model Civic or a high-performance Integra Type R, this fuel hanger is engineered to fit seamlessly.
Port Fittings: Adaptable to Aftermarket and OEM Lines
The Radium Engineering fuel pump hanger is designed with versatility in mind, offering multiple port fittings to accommodate both aftermarket and Original Equipment Manufacturer (OEM) fuel lines.
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Pump Outlet: The fuel pump outlet on the top plate is internally threaded for 8AN ORB (O-Ring Boss) female fittings (3/4″-16 thread). It comes pre-installed with a -6AN male fitting, ready for connection to a common aftermarket feed line. Furthermore, included adapter fittings ensure compatibility with OEM lines:
- 8.5mm Barbed Adapter: Allows reuse of the OEM feed line for 94-95 Integra and 92-95 Civic models.
- SAE Quick Connect Fitting: Enables reuse of the OEM feed line for 96-01 Integra and 96-00 Civic models.
- For those requiring different configurations, a wide range of compatible 8AN ORB adapter fittings are available HERE.
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Return Inlet: The return inlet is tapped for 4AN ORB (7/16″-20) female threads. Two fittings are included for the return port:
- 6.5mm Barbed Fitting (Pre-installed): Permits the reuse of the OEM return line. Note: 96-01 Integra and 96-00 Civic models may require extending the OEM return hose when using this fitting.
- -6AN Male Fitting: Allows for connection to an aftermarket return line.
- Additional compatible 4AN ORB adapter fittings can be found HERE.
The low-profile design of all fittings ensures clearance under the fuel pump access cover, maintaining a clean and factory-like installation.
Fuel Pump Compatibility: Single and Dual Pump Options
The Radium Engineering fuel pump hanger is available in configurations to support single or dual fuel pump setups. Part numbers 20-0790-00 and 20-0792-00 are designed for single aftermarket fuel pump installations.
Important Note: For applications requiring dual aftermarket fuel pumps, the supplementary “dual pump add-on” (part numbers 20-0796-00 or 20-0797-00) is necessary.
Selecting the ideal fuel pump(s) depends on factors such as expected engine power output, fuel type (gasoline, E85, methanol, etc.), and desired fuel pressure.
Single Pump Hanger Options:
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P/N: 20-0790-00: Compatible with:
- AEM 50-1000
- AEM 50-1200+
- AEM 50-1230+
- AEM 50-1235
- Walbro GSS342
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P/N: 20-0792-00: Compatible with:
- Walbro F90000267
- Walbro F90000274
- Walbro F90000285++
- Walbro F90000295
Check Valve Notes: Pumps marked with “+” do NOT include a check valve. If a check valve is required (to maintain fuel pressure in the lines when the pump is off), purchase 20-1533. Pumps marked with “++” also lack a check valve; use 20-1534 if needed. Important: Check valves cannot be used on a second pump in dual pump configurations.
Enhanced Electrical System
Radium Engineering has prioritized reliable electrical connections in this fuel pump hanger. Custom-designed anti-rotation stainless steel electrical studs are used, capable of handling the high current demands of performance fuel pumps. These robust studs are a significant upgrade over compact multi-pin bulkhead connectors, which can be prone to failure under high amperage.
These serviceable connections are hermetically sealed, ensuring they are impervious to all standard and exotic fuels, including gasoline, E85, and methanol. Non-conductive anodized aluminum acorn nuts are provided to prevent accidental short circuits, adding an extra layer of safety. Furthermore, the in-tank wiring is constructed from high-quality, chemically resistant ETFE (Ethylene Tetrafluoroethylene) insulated wire, providing long-lasting durability and reliability within the harsh fuel tank environment.
Electrical Wiring Recommendations:
- For single Walbro GSS342 (255LPH) fuel pump installations, reusing the OEM fuel pump wiring may be possible.
- However, upgrading the OEM wiring is strongly recommended to guarantee that the fuel pump(s) receive full voltage and operate at their maximum potential. Voltage drops in inadequate wiring can significantly reduce pump performance.
- Universal fuel pump wiring kits are available HERE. Select one kit for each aftermarket fuel pump installed to ensure optimal electrical supply.
Key Features of the Radium Fuel Pump Hanger
- Drop-In Installation: Designed for direct replacement with no vehicle modifications needed for 94 Honda Integra and compatible models.
- Anodized Aluminum Construction: Provides durability and corrosion resistance in the fuel tank environment.
- Merged 8AN ORB Female Pump-Out Port: Offers high flow capacity and versatile fitting options.
- Fittings for Aftermarket and OEM Lines: Ensures compatibility with various fuel system setups.
- Capable of 2 Pumps with Add-On: Supports high-horsepower applications with the dual pump upgrade.
- Compatible with Various Pumps: Accommodates a wide range of popular aftermarket fuel pump models.
- Included Fuel Pump Filter Sock: Protects pumps from debris and ensures clean fuel delivery.
- High Current Electrical Hardware: Robust electrical studs and wiring for reliable high-power operation.
- Stainless Steel Hardware and Clamps: Corrosion-resistant and durable components.
- Gasoline, Methanol, and E85 Compliant: Compatible with a wide range of fuel types.
- New Anti-rotation Electrical Terminals: Enhances electrical connection reliability and prevents loosening.
Radium P/N: 20-0790-00 shown above.
Radium Engineering Fuel Pump Hanger P/N 20-0792-00
Dual Pump Add-On: Unleash Extreme Fueling Capacity
For those pushing the boundaries of performance, the Radium Engineering Dual Pump Add-On (part numbers 20-0796-00 and 20-0797-00) provides the ultimate fueling solution.
Crucial Note: The Dual Pump Add-On requires the base fuel pump hanger (part number 20-0790-00 or 20-0792-00) for installation. It cannot be used as a standalone product.
The Honda fuel tank design presents unique challenges for dual pump installations due to the small tank opening. Fitting two pumps simultaneously through the opening is impossible. Furthermore, the insertion angle, tall collector bowl, and shallow tank depth add to the complexity. Notably, fitting two Walbro 39/50 DCSS fuel pumps (F90000267/274/285) side-by-side within the OEM collector bowl is not feasible due to space constraints.
However, Radium Engineering has ingeniously engineered a solution by arranging the pumps in an inline configuration. This innovative approach allows these large base pumps to fit within the Honda fuel tank, as illustrated below.
The rear pump assembly is installed first, and a specialized tool is included to hold it back during the insertion of the front pump. An electrical plug and SAE quick connector simplify the process, eliminating the need for complex assembly inside the tank. Both fuel pumps merge into the single 8AN ORB outlet on the fuel hat. Integrated check valves enable fuel pump staging, allowing for efficient fuel delivery under varying demand conditions.
Dual Pump Add-On Fuel Pump Compatibility:
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P/N: 20-0796-00: Compatible with:
- AEM 50-1000
- AEM 50-1200
- Walbro GSS342
- And other pumps with similar physical dimensions and electrical connectors.
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P/N: 20-0797-00: Compatible with:
- Walbro 39/50 DCSS pumps including F90000267
- F90000274
- F90000285 pumps.
Dual Pump Add-On Features:
- Gasoline, Methanol, and E85 Compliant: Compatible with a wide range of fuel types.
- Compatible with Various Pumps: Offers flexibility in fuel pump selection.
- Included Fuel Pump Filter Sock: Provides essential fuel pump protection.
- Plug and Play Installation: Simplifies the dual pump upgrade process.
- Bolt-On Stainless Pump Bracket: Ensures secure and durable pump mounting.
- Polished Installation Tool: Facilitates easier dual pump installation in the Honda fuel tank.
Radium P/N: 20-0796-00 shown above.
Radium P/N: 20-0797-00 shown below.
Upgrade your 94 Honda Integra’s fuel system with the Radium Engineering Fuel Pump Hanger and experience the difference in performance and reliability. Whether you’re aiming for street performance or building a track-ready machine, this fuel hanger provides the foundation for a robust and high-flowing fuel system.
