Fuelab 51504 Fuel Pressure Regulator Manual de usuario descargar pdf (Pagina 2)

To Induction

Tube (for Blow-

Through Applications

Only!, Otherwise Do

Not Plumb or Plug)

51504 Regulator

Fuel Gauge Shown

in Gauge Port, Liquid

Filled Gauge may

have Error Due to

Temperature Variations.

Fuel Straining Filter Required, Typical

Micron Rating: 100-250, Fuelab

Straining Filter Recommended. Straining

Filter may be Installed in Fuel Pump,

Consult Pump Manufacturer's Specifications.

Use Y-Block or Fuel Log

to Split Flow for

Multiple Float Bowls

Vented Fuel Cell or Fuel Tank.

Tank must be Plumbed According

to Maximum Pump Flow Rate.

Consult Pump Manufacturer's

Specifications and Recommendations.

Follow Fuel Cell Manufacturer's

Recommendations for Proper

Cell Vent Plumbing

Fuel Filter Required, 60 Micron

Stainless Steel Element for

Methanol Use or 10 Micron

Paper Element for Gasoline.

Fuelab Filter is Recommended.

Electric

Fuel Pump

105020124-1, No Rev Page 2 of 4

Plumbing Planning Notes:

Minimize plumbing restrictions between carburetor(s) and regulator for peak performance. Use –6AN (3/8”) to

–10AN (5/8”) line as required per flow rate requirements of the vehicle’s engine and fuel pump. See company web-

site for nitrous oxide use and alternate plumbing schematics. Plumb the return line back to the fuel tank. Use of a

–8AN (1/2”) return line is typically recommended for this model of regulator. See diagram on next page as well as

diagram below, to identify the ports used on the regulator. The two side ports can be interchanged either Outlet or

Inlet, since this valve operates as a relief valve (pressure is relieved from the regulator out to the rest of the fuel

system, by returning unused fuel back to the fuel cell). Plumb the Pressure Reference Port using the barbed fitting

for “blow-through” carbureted applications only (blow-through means that a turbo or supercharger is used to

pressurize the carburetor(s)). When this occurs, fuel pressure must be compensated by the change in float bowl

pressure. If motor is naturally aspirated (Normal carbureted application, with float bowl vented to atmosphere) allo

this port to vent to atmosphere, do not plug or plumb to any pressure source. The 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 (two –6AN Inlet-Outlet Ports and one –6AN Return Port) use “AN” or “military” style

fittings. This plumbing standard is commonly used with racing and high performance applications. See step 6 on

next page 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 carburetor from

foreign object damage. Reference the Schematic Diagram below for filter locations. Use of a liquid filled gauge

exposed to engine compartment heat is not recommended as the liquid inside the gauge may exert measurement

errors.

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

electric gauge or pressure transducer system is recommended for readings in a passenger compartment.

Typical Carbureted Fuel System Schematic Diagram:

Installation Steps:

1. Disconnect the ground terminal from battery and allow the vehicle’s engine and exhaust system to cool.

Relieve fuel system per applicable service manual. Follow all Warnings and Cautions written on previous page

of these instructions.

2. Modify, remove or replace other fuel system components as required per established build plan (reference

notes on previous page and above).