Fuelab 41403 Prodigy Fuel Pump Carbureted In-Line - Manual (Page 2)

Fuel Filter with 60 Micron or
Lower Particle Rating is Required.
Fuelab Filter with 6, 10 or 40
Micron Rating is Recommended.
Fuel Straining Filter Required, Typical Micron
Rating: 75-150, Fuelab 818xx or 828xx Series,
75 Micron Filter Recommended.
Typical Dual Inlet
Carburetor Shown
Vented Fuel Cell or Fuel Tank.
Tank must be Plumbed According
to Maximum Pump Flow Rate.
-8AN or 1/2" Miniumum
Line Size Required to feed Straining
Fuel Filter and Fuel Pump.
Follow Fuel Cell Manufacturer's
Recommendations for Proper
Cell Vent Plumbing
110020272-1, Rev C Page 2 of 6
Special Note: Use in carbureted systems require a bypass return or relief valve.
Do not "Dead Head" Fuel Pump.
Fuel Pump may be mounted inside a fuel tank or cell, inlet screen strainer is still required. Adequate structural
mounting and support is the responsibility of the fabricator and installer. Mount the fuel pump as low as possible
without it being vulnerable to road hazards or debris. Minimize the length of the fuel line feeding fuel pump. Do not
use “cross drilled” style 90° elbow fittings, check valves or other restrictions (other than high flow fuel filter strainer
or shut-off valve) before or upstream of fuel pump. Minimize plumbing restrictions between fuel tank and fuel pump
and regulator for peak performance, use -10AN (5/8”) to -12AN (3/4”) line as required per flow rate requirements of
the vehicle’s engine and fuel pump speed setting. Typically -6AN (3/8”) to -10AN (5/8”) line is required for the rest
of the fuel system, after or upstream of fuel pump. Use of a strainer filter upstream of fuel pump is required to
protect fuel pump from damage. All fuel line used must handle high pressure. The use of fuel line such as stainless
steel braided line and “AN” style fitting connections is recommended. The fuel ports (one -10AN Inlet Port and one
-10AN Outlet Port) use “AN” or “military” style fittings. This plumbing standard is commonly used with racing and
high performance applications. See step 4 on page 5 for additional information on this port standard. A fuel filter
with a 60 micron or lower particle rating is required to be used upstream of regulator and downstream from fuel
pump to protect it and the fuel injectors from foreign object damage. Reference the Schematic Diagram below for
filter locations. Fuel tank must have a modification of an additional sump, or use aftermarket fuel cell as indicated.
Use of a “pick-up” tube system is not recommended. Use of a liquid filled gauge exposed to engine compartment
heat is not recommended as the liquid inside the gauge may exert measurement errors, all mechanical gauges and
pressure transducers have amounts of error due to temperature fluctuation, be aware of inaccurate pressure
readings. DO NOT plumb gauge port to any gauge mounted inside the vehicle or in passenger compartment. A
line burst can spill fuel inside passenger compartment and on occupants, possibly causing serious injury or death.
An electronic gauge or pressure transducer system is recommended for readings in a passenger compartment.
Typical Dual Inlet Carbureted Fuel System Plumbing Schematic Diagram:
Plumbing Planning Notes:
41403-c (-sp) Fuel Pump
Fuel Gauge Shown in
Gauge Port, Liquid Filled
Gauge may have Error Due
to Temperature Variations.
BYPASS
STYLE
REGULATOR
SHOWN