Mallory-ignition Mallory 2-PORT FUEL PRESSURE REGULATORS 4207

2-PORT FUEL PRESSURE REGULATORS

PART NO. 4207, 4207M and 4210

INSTALLATION INSTRUCTIONS

FORM 1385 (REV. E) 01/12

GENERAL INFORMATION

The 2-Port Regulator is designed to regulate fuel

pressure between high pressure fuel pumps and

carburetors. The regulator is recommended for Mallory

COMP PUMP® 140 Series Electric Fuel Pump. Also, recom-

mended for Mallory High Performance and Competition

Mechanical Fuel Pumps.

MOUNTING PROCEDURE

The regulator may be mounted at any angle. For

maximum efficiency, mount the regulator as close

as possible to the carburetors. DO NOT mount the

regulator on or near exhaust manifolds.

A bracket is provided for convenient mounting under an

intake bolt. Loosen the four regulator base and bracket

screws. Remove two of these screws.

Position the bracket over the two screw holes. Install the

two screws. Tighten the four screws between 16 and 19

in./lbs.

FITTINGS AND FUEL LINE

Purchase fittings (and plugs) as necessary. Use a

thread sealant compound on the fitting threads. You

can find thread sealant compound at a hardware

store. Do not use thread sealing tape. Install the fit-

tings. Do not overtighten the fittings. This could dam-

age the regulator. Connect the fuel lines. See Figures

1 and 2.

FUEL PRESSURE ADJUSTMENT

NOTE: Engine must be running when adjusting

fuel pressure.

Step 1

Connect a fuel pressure gauge to the fuel pressure port.

Step 2

Release the jam nut on the adjustment screw.

Step 3

Start the engine. (Check the fuel system for fuel leaks. Shut

off the engine and correct any fuel leaks before proceed-

ing.)

Step 4

Adjust fuel pressure. Turn adjustment screw clockwise to

increase fuel pressure or counterclockwise to decrease fuel

pressure. Rev the engine slightly several times. Check fuel

pressure. Repeat if necessary.

Step 5

Tighten jam nut and shut off engine.

MALLORY www.mallory-ignition.com

FUEL APPLICATION

Part No. 4207 Gasoline, Automotive/Street and

Racing

Part No. 4207M Gasoline, Marine

Part No. 4210 Alcohol/Methanol,

Automotive/Street and Racing

PARTS INCLUDED IN THIS KIT

1 2-Port Fuel Pressure Regulator

1 Regulator Bracket

1 Plug, 1/8” NPT

SPECIFICATIONS:

Inlet and outlet port thread sizes: 3/8” NPT

Fuel pressure port thread size: 1/8” NPT

Fuel pressure adjustment range: 4–12 PSI

Maximum inlet pressure: 20 PSI

ADJUSTMENT SCREW

JAM NUT

REGULATOR CAP SCREWS (4)

REGULATOR CAP

OUTLETS TO CARBURETOR

(2 PLACES, 3/8" NPT

FUEL PRESSURE PORT (REAR, 1/8" NPT)

REGULATOR HOUSING

INLET FROM FUEL PUMP (3/8" NPT)

REGULATOR BASE AND

BRACKET SCREWS (4)

REGULATOR BASE

REGULATOR BRACKET (NOT PICTURED)

FIGURE 1

1 2

Summary of Contents

Page 1 - PART NO. 4207, 4207M and 4210

12-PORT FUEL PRESSURE REGULATORSPART NO. 4207, 4207M and 4210INSTALLATION INSTRUCTIONSFORM 1385 (REV. E) 01/12GENERAL INFORMATIONThe 2-Port Regulator

Page 2 - (REV. E) 01/12

www.mallory-ignition.com MALLORY2REGULATOR MAINTENANCEStep 1 Release the jam nut and remove the adjustment screw. Set aside the diaphragm spring.Step

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Mallory-ignition Mallory 2-PORT FUEL PRESSURE REGULATORS 4207_4210 User Manual

Browse online or download User Manual for For the car Mallory-ignition Mallory 2-PORT FUEL PRESSURE REGULATORS 4207_4210. Mallory Ignition Mallory 2-PORT FUEL PRESSURE REGULATORS 4207_4210 User Manual

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Mallory-ignition Mallory 2-PORT FUEL PRESSURE REGULATORS 4207_4210 User Manual

Browse online or download User Manual for For the car Mallory-ignition Mallory 2-PORT FUEL PRESSURE REGULATORS 4207_4210. Mallory Ignition Mallory 2-PORT FUEL PRESSURE REGULATORS 4207_4210 User Manual

Summary of Contents

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