Mallory Ignition ACCEL 74567 User Manual

INSTALLATION INSTRUCTIONS

COMPETITION

FUEL PRESSURE REGULATOR

FOR FUEL INJECTION

®

PART NO. 74567

IMPORTANT: This regulator must use a fuel return line. The fuel return line
runs between the fuel bypass port of the regulator and the fuel tank. Fuel
pressures cannot be adjusted if the fuel return line is absent.

PARTS INCLUDED IN THIS KIT

1 Fuel Pressure Regulator Ports thread sizes: 3/8" NPT and AN-8
1 Bracket Adjustment range: 30-100 PSI
2 Bracket Mounting Screws Fuel Application: Gasoline and Alcohol/Methanol
2 3/8" NPT Pipe Plugs
2 AN-8 Fittings
2 O-rings for Fittings

SPECIFICATIONS:

GENERAL INFORMATION

Mallory’s 74567 regulator regulates fuel pressure between high pressure fuel pumps and fuel injection
systems. The regulator is recommended for ACCEL DFI 74702 – 75702 – 75709 – 75710 Pumps, or
any fuel injection pump designed to produce 30-100 PSI.
The 74567 regulator is a return style fuel pressure regulator. The excess fuel and fuel pressure is sent
back to the fuel tank through the fuel return line. The fuel return line runs between the fuel bypass port
of the regulator and the top of the fuel tank. The fuel tank must have provisions for a fuel return line.

This regulator is equipped with a vacuum/boost compensation port (brass barb fitting) that can be used
to momentarily decrease fuel pressure (vacuum compensation) at idle and part throttle, or increase
fuel pressure under blower boost (boost compensation). While it is not necessary to connect a hose to
the vacuum/boost compensation port, it may be beneficial in some cases. However, the small plug on
the barb must be removed before use.
You can mount the 74567 regulator at any angle. For maximum efficiency, mount it as close as
possible to the fuel injection system.

DO NOT mount the regulator on or near exhaust manifolds. A bracket is provided for convenient
mounting.

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