Evil Energy 12V Electric Fuel Pump for Carburetor + 5-12PSI Adjustable Pressure Regulator Bundle High-Flow 90GPH External, E85/Gas Compatible

12V Electric Fuel Pump for Carburetor with Adjustable Regulator

Carbureted builds can suffer from hard starting, fuel starvation under load, or flooding when pump flow and pressure are not properly matched. This EVIL ENERGY bundle combines a 12V external electric fuel pump for carburetor applications with a 5–12 PSI adjustable regulator and gauge, helping users create a more controlled fuel-delivery setup. It is suited to classic-car restorers, hot-rod builders, DIY mechanics and professional installers handling engine swaps, mechanical-pump conversions or custom carbureted fuel-system upgrades.

The pump has a published flow range of 320–370 LPH at specified operating pressures between 7 and 11 PSI. The included regulator allows the final fuel pressure to be adjusted within a 5–12 PSI range. Before ordering, confirm that this pressure range matches the requirements published by the carburetor manufacturer.

Fuel Pump Flow, Pressure and Electrical Requirements

Selecting an electric fuel pump for carb applications requires more than comparing the maximum LPH number. Fuel-pump output changes with operating pressure, voltage at the pump, current supply, fuel-line restriction and filter condition.

• Published flow is 320–345 LPH at 7–9 PSI with a stated current draw of 5.5–6.3A.
• Published flow is 345–370 LPH at 10–11 PSI with a stated current draw of 5.6–6.0A.
• The listed operating voltage is 12V–13.5V DC.
• The listed closed pressure is 14 PSI.
• Closed pressure is not the same as the correct operating pressure for a carburetor.

The exact test voltage used for each published flow point is not separately identified in the available specifications. Do not calculate or promise horsepower support from the nominal flow rating alone.

5–12 PSI Adjustable Carburetor Fuel Pressure

The included regulator provides a 5–12 PSI adjustable pressure range. Excessive pressure may overcome a carburetor needle and seat, while insufficient pressure or fuel volume may cause unstable delivery under load.

• Use the included gauge while adjusting fuel pressure.
• Follow the carburetor manufacturer's specified pressure range.
• Use this regulator only when the required operating pressure falls within its 5–12 PSI adjustment range.
• Do not assume that the maximum setting is suitable for every carburetor.

When choosing a low pressure electric fuel pump for carburetor applications, verify the regulated operating pressure rather than relying only on the pump's closed-pressure specification.

Fuel Pump and Regulator Connection Requirements

The pump and regulator are supplied in the same bundle, but their connection sizes are different. The pump is listed with 3/8-inch inlet and outlet connections, while the regulator uses AN6 ORB ports with AN6 fittings.

• The pump includes two 3/8 NPTF to 5/16-inch barb adapters.
• The regulator includes three AN6 to AN6 ORB fittings.
• Additional fuel-safe hose, adapters or fittings may be required between the pump and regulator.
• Confirm the regulator's inlet, outlet and return-port routing before installation.
• Do not apply thread sealant to AN flare sealing surfaces.
• Use fuel-compatible sealant only on tapered pipe threads where required.

Fuel Compatibility

The fuel pump and regulator do not currently have the same published fuel compatibility list.

• The fuel pump is listed for gasoline and diesel.
• The regulator is listed for gasoline, E85, diesel and ethanol/alcohol.
• Nylon braided lines should not be treated as E85 compatible unless their manufacturer specifically approves them for the intended ethanol content.

The complete fuel system may only be used with a fuel approved for every component, including the pump, regulator, hose, filter, seal and fitting. The complete bundle should not be described as E85 compatible unless the exact fuel pump SKU has also been confirmed for E85 use.

What Is Included

• 1 × 12V external gear-type electric fuel pump
• 1 × 5–12 PSI adjustable fuel pressure regulator
• 1 × 5–12 PSI pressure gauge
• 2 × 3/8 NPTF to 5/16-inch barb pump adapters
• 3 × AN6 to AN6 ORB regulator fittings
• 2 × insulated electrical terminals
• 2 × nuts
• 2 × washers
• 1 × regulator mounting bracket
• 1 × Allen key
• 1 × sealant tape
• Mounting screws for the regulator

Additional Parts May Be Required

This product combines a pump and regulator, but it is not a complete fuel-line and electrical installation kit. Depending on the fuel-system layout, additional parts may be required.

• Fuel-compatible supply hose
• Fuel-compatible return hose, when required
• Adapters between the pump and AN6 regulator ports
• A compatible fuel filter
• A properly sized relay and fuse
• Automotive wire sized for current draw and circuit length
• Fuel-line clamps and chassis supports
• Pump mounting or vibration-isolation hardware
• Fuel shutoff valve, when required by the installation design

Installation Checklist

• Confirm that the engine uses a carburetor rather than EFI.
• Verify that the carburetor's required pressure falls within the regulator's 5–12 PSI adjustment range.
• Confirm pump inlet, outlet and regulator port routing before connecting the lines.
• Select a protected external mounting location away from exhaust heat, moving suspension parts, drivetrain components and road debris.
• Avoid excessive inlet lift, undersized fuel lines and restrictive fittings.
• Install a filter compatible with the fuel, flow requirement and pump specifications.
• Use a properly sized fused relay circuit for the electric fuel pump.
• Verify voltage at the fuel pump while the pump is operating.
• Prime the system and inspect all fittings and hose connections for leaks.
• Set fuel pressure according to the carburetor manufacturer's specification.
• Recheck pressure, wiring and fuel-line connections after the first heat cycle.

Universal Application Notice

This electric carb fuel pump bundle is intended for universal-style carbureted fuel-system installations where the installer has verified pressure, flow, voltage, fuel type, mounting location, hose routing and fitting requirements.

It is not a vehicle-specific direct-replacement fuel pump. Do not select the product only by model year, engine displacement or vehicle type.

Brand Summary

Return Reasons

1. Quality Issues: Provide photos/videos; we cover return shipping.
2. Wrong Item Ordered: Buyer covers return shipping; email within 30 days.
3. Change of Mind: Buyer covers return shipping; email within 30 days.
4. Shipping Damage: Inspect packages; do not sign for damaged items.
5. Incorrect Item Shipped: Contact within 7 days.

Price Protection Policy

Effective from August 25, 2024. Price drops within 7 days of purchase can be claimed.

Disclaimer

EVIL ENERGY reserves the right to interpret, modify, or terminate this policy in accordance with applicable laws and regulations.

If you need further information or assistance, feel free to ask!