Mallory 3757701 Unilite Distributor - Chrysler 250, 361, 383 & 400 Engines Instructions

FRM34418 (REV. B) 09/17

INSTALLATION INSTRUCTIONS

UNILITE

®

DISTRIBUTOR

This product is applicabl e to pre-1966 California and pre-1968 federally certified passenger cars. It is also applicable to non-emission controlled trucks and similar vehicles. It is not applicable or intended for use on any emission controlled vehicles operated on highways or roads, unless otherwise noted.

IMPORTANT

Before installing the UNILITE® Distributor, make sure that your vehicle is equipped with an ignition ballast resistor (or loom resistance wire) in the wire between the ignition switch and the coil (+) terminal. Check a service manual for your vehicle to locate the ignition ballast resistor (or loom resistance wire). If your vehicle is not equipped with an ignition ballast resistor, install a Ballast Resistor Part No. PN 8214 in the wire between the ignition switch and the coil (+) terminal.

Failure to use an ignition ballast resistor will eventually destroy the UNILITE® Ignition Module.

PARTS INCLUDED IN THIS KIT: 1 UNILITE® Distributor 1 Distributor Wire Harness

GENERAL INFORMATION

Ignition Coils:

The UNILITE® Ignition system works with most stock ignition coils and aftermarket high performance ignition coils. For optimum performance, use a Mallory PROMASTER® Coil Part No 29440.

Spark Plug Wires:

To prevent false triggering and premature ignition failures, use suppression type spark plug wire. We recommend spiral core ignition wire, such as Mallory PRO SIDEWINDER® Ignition Wire.

Spark Plug Gaps:

For street applications, use your engine manufacturer’s specifications. For racing applications, start with your engine manufacturer’s specifications.

Then experiment with, and closely monitor, various gaps to achieve maximum performance.

Electric Welding:

Disconnect the distributor wire harness before welding on the vehicle.

OLD DISTRIBUTOR REMOVAL

Step 1

Disconnect the trigger wire from the coil (-) terminal. Locate the spark plug wire on the original distributor cap that that is used to set engine timing. See a service manual for this location. Mark the distributor cap and distributor housing at this spark plug wire position.

Step 2

Turn the engine crankshaft in the direction of rotation until the timing mark lines up with the top dead center (TDC) mark on the timing tab.

See a service manual for these locations.

Step 3

Remove the distributor cap from the distributor. Do not remove the spark plug wires or coil wire at this time. Make sure the rotor blade points to the mark made on the distributor housing (from Step 2). If it does not, repeat Step 2 until the timing mark lines up (again) with the TDC mark on the timing tab.

NOTE: Once you are finished with Step 3, DO NOT turn the crankshaft until the new distributor is installed.

Step 4

Note the direction that the rotor is pointing. If you are replacing a vacuum advance distributor, note the direction the vacuum chamber is pointing.

Remove the distributor hold down clamp and remove the distributor from the engine.

UNILITE® DISTRIBUTOR INSTALLATION

Step 1

Remove the distributor cap from the UNILITE® Distributor.

Step 2

Place the UNILITE® Distributor in the engine. Rotate the UNILITE®

Distributor housing in the opposite direction of rotor rotation until the nearest slot on the rotor’s shutter wheel is aligned with the optical eye of the UNILITE® Module. This will generally give timing close enough for starting purposes. Put the distributor hold down clamp in place and tighten slightly, leaving it loose enough to turn the UNILITE® Distributor.

Make a mark on the UNILITE® Distributor housing where the rotor points.

Step 3

Install the UNILITE® Distributor cap. Remove the spark plug wire on the original distributor cap that the engine timing is set from, and install it onto the UNILITE® Distributor cap post above the mark on the UNILITE®

Distributor housing where the rotor had pointed. Install the remaining spark plug wires from the original distributor cap to the UNILITE®

Distributor cap in the same sequence.

MALLORY IGNITION www.msdperformance.com/brands/mallory/

WIRING PROCEDURE

The 3 wires coming from the UNILITE® Distributor must be connected using the distributor wire harness provided. (see Figures 1 and 2).

RED WIRE: If you use loom resistance wire, connect to the coil (+) terminal.

If you use a ballast resistor, connect to 12 volt side of ballast resistor.

GREEN WIRE: Connect to the coil (–) terminal.

BROWN WIRE: Connect to engine block ground. Clean away any grease, oil and paint from the mounting surface before the connection is made.

ADDITIONAL CONNECTIONS

Vacuum advance applications: Connect original vacuum hose to the

UNILITE® Distributor vacuum chamber. Replace hose if cracked, damaged, or if it is not long enough. If the previous distributor was not equipped with vacuum advance, connect a vacuum hose to a ported vacuum outlet on the carburetor.

Tachometer operation: Connect wire or wires as recommended by the actual tachometer manufacturer.

STARTING ENGINE

CAUTION: Be sure all tools, wires and miscellaneous objects are clear of moving engine parts and extreme heat before staring the engine.

Step 1

Recheck all wires and connections to make sure they are correct. Check and clean, or replace spark plugs. If replacing spark plugs, use types recommended by the engine manufacturer.

Vacuum advance applications: Disconnect the vacuum hose to UNILITE®

Distributor vacuum chamber at the carburetor and temporarily plug this carburetor fitting.

Step 2

Connect a timing light and start the engine. If the engine fails to start, rotate the distributor in small increments clockwise or counterclockwise until the engine starts. Do not exceed more than ten degrees of distributor housing rotation in either direction.

Step 3

Set timing as recommended by the engine manufacturer, then tighten distributor hold down clamp. Check timing again. If timing has moved, repeat Step 3.

Vacuum advance applications: Reconnect the vacuum hose between the

UNILITE® Distributor vacuum chamber and the carburetor.

FIGURE 1 UNILITE® WIRING DIAGRAM USING BALLAST RESISTOR

12V/IGNITION

SWITCH

ALL OTHER WIRES ORIGINALLY CONNECTED TO

THE COIL (+) TERMINAL

IGNITION BALLAST

RESISTOR

PN 8214

RED

DISTRIBUTOR WIRE HARNESS

PART NO. 29349

IGNITION MODULE

FEMALE CONNECTOR

BROWN GREEN

ENGINE

GROUND

NOTE: The purpose of an ignition ballast resistor between the ignition switch (12V) and the ignition coil positive terminal is to restrict current flow through the ignition coil. Failure to use an ignition ballast resistor will eventually destroy the Ignition Module.

EXCEPTION: If your vehicle is equipped with a HYFIRE® Electronic Ignition Control or similar aftermarket ignition control, use the wiring procedures stated in the instructions included with the ignition control.

To prevent false triggering and possible premature ignition failure, you must use suppression type (carbon core, spiral core, or radio suppression core) spark plug wire.

DO NOT USE SOLID CORE (COPPER CORE OR STAINLESS STEEL CORE) SPARK PLUG WIRE WITH ANY ELECTRONIC IGNI-

TION SYSTEM.

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MALLORY IGNITION

FIGURE 2 UNILITE® WIRING DIAGRAM USING OEM PRIMARY RESISTANCE WIRE

12V/IGNITION

SWITCH


PART NO. 29349

ALL OTHER WIRES ORIGINALLY CONNECTED TO


LOOM RESISTANCE WIRE

RED

IGNITION MODULE

FEMALE CONNECTOR

BROWN

GREEN

ENGINE

GROUND

NOTE: The purpose of resistance wire between the ignition switch (12V) and the ignition coil positive terminal is to restrict current flow through the ignition coil. Failure to use resistance wire will eventually destroy the Ignition

Module.

EXCEPTION: If your vehicle is equipped with a HYFIRE® Electronic Ignition Control or similar aftermarket ignition control, use the wiring procedures stated in the instructions included with your ignition control.


DO NOT USE SOLID CORE (COPPER CORE OR STAINLESS STEEL CORE) SPARK PLUG WIRE WITH ANY ELECTRONIC IGNI-

TION SYSTEM.

FIGURE 3

IGNITION

MODULE

FEMALE

CONNECTOR

WIRING DIAGRAMS USING AFTERMARKET ELECTRONIC IGNITION CONTROLS

ALL WIRES NORMALLY CONNECTED TO



PART NO. 29349

RED

IGNITION BALLAST

RESISTOR

PN 8214

RED

12V/IGNITION

SWITCH

MAGNETIC PICKUP

(NOT USED)

REFER TO IGNITION

CONTROL INSTRUCTIONS

FOR REMAINING POWER

CONNECTIONS

BROWN

ENGINE

GROUND

GREEN

WHITE

BLACK ORANGE

WIRE CONNECTION

GRAY

PART NO. 690 or 695

IGNITION CONTROL

HARNESS

HEAVY RED - BATTERY (+)

HEAVY BLACK - BATTERY (-)

Installing an ignition ballast resistor has no effect on the performance of the ignition system.

However, installing or retaining the original ignition ballast resistor allows for easy conversion back to standard ignition.


DO NOT USE SOLID CORE (COPPER CORE OR STAINLESS

STEEL CORE) SPARK PLUG WIRE WITH ANY ELECTRONIC IGNI-

TION SYSTEM.


FIGURE 4

IGNITION

MODULE

FEMALE

CONNECTOR

ALL WIRES NORMALLY

CONNECTED TO THE COIL

(+) TERMINAL


PART NO. 29349

RED

IGNITION

BALLAST

RESISTOR

PN 8214

12V/IGNITION

SWITCH

MAGNETIC PICKUP

CONNECTOR NOT

USED

MALLORY 6A, 6AL and MSD TM 6 SERIES IGNITION

WIRE

CONNECTION

RED

BROWN

ENGINE

GROUND

BLACK

GREEN

WHITE

ORANGE

MSD TM 6 SERIES

Installing an ignition ballast resistor has no effect on the performance of the ignition system.

However, installing or retaining the original ignition ballast resistor allows for easy conversion back to standard ignition.

MALLORY DISTRIBUTOR TUNE–UP PARTS

DISTRIBUTOR CAP 209M

ROTOR

UNILITE MODULE

HIGH ENERGY DISTRIBUTOR CAP

309M

605

208M

*MUST USE BRACKET KIT PN 29316 AND ROTOR PN 309M

A; TOWER STYLE PLUG WIRE BOOTS REQUIRED.


DO NOT USE SOLID CORE (COPPER CORE OR STAINLESS STEEL

CORE) SPARK PLUG WIRE WITH ANY ELECTRONIC IGNITION

SYSTEM.

OPTIONAL ACCESSORIES FOR THE

UNILITE® DISTRIBUTOR

Active Power Filter . . . . . . . . . . . . Part No. 29371

Helps prevent module failures due to voltage spikes associated with “noisy” electrical systems and electrical defects.

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FIGURE 5 THE FACTORY EQUIPPED CURVE FIGURE 6 SPRING COMBINATION CHART

FIGURE 7 ADVANCE CURVES

ADVANCE

STOP BUSHING

RED

SILVER

GREEN

BLUE

PURPLE

BLACK

ADVANCE

STOP BUSHING

RED

SILVER

GREEN

BLUE

PURPLE

BLACK

ADVANCE

STOP BUSHING

RED

SILVER

GREEN

BLUE

PURPLE

BLACK

ADVANCE

STOP BUSHING

RED

SILVER

GREEN

BLUE

PURPLE

BLACK

ADVANCE

STOP BUSHING

RED

SILVER

GREEN

BLUE

PURPLE

BLACK

ADVANCE

STOP BUSHING

RED

SILVER

GREEN

BLUE

PURPLE

BLACK


5

SELECTING THE ADVANCE STOP BUSHING

Five different advance stop bushings are supplied in the distributor kit. The distributor comes with a Blue (21 o ) bushing already installed.

If a different amount of centrifugal advance is desired, follow the next procedure to change the bushings. The chart in Figure 8 gives the size and the approximate degrees for the corresponding bushings.

FIGURE 8

BUSHING SIZE

Red-Smallest

Silver

Green

Blue

Purple

Black-Largest

APPROXIMATE CRANKSHAFT

DEGREES

28

25

23

21

19

18

FIGURE 9 CHANGE THE ADVANCE STOP BUSHING

CHANGING THE ADVANCE STOP BUSHINGS

1. Remove the distributor.

2. Remove the distributor cap and rotor.

3. Remove the gear and collar if applicable, then remove the shaft

from the distributor.

4. Remove the locknut and washer on the bottom of the advance

assembly (Figure 9).

5. Remove the bushing and install the new one.

Install the washer and locknut.

LOCKING OUT THE CENTRIFUGAL ADVANCE

1. Remove the advance springs, weights and the advance stop bush-

ing from the advance assembly.

2. Remove the roll-pin from the drive gear and remove the gear from

the shaft.

3. Slide the shaft two inches out of the housing.

4. Rotate the shaft 180 o and insert the advance stop bushing pin into

the small hole on the advance plate (Figure 10).

5. Install the locknut and washer to the advance stop bushing pin.

6. Install the drive gear and roll-pin.

ADVANCE

STOP

BUSHING

WASHER

LOCKNUT

FIGURE 10 LOCKING OUT THE ADVANCE

ADVANCE STOP

BUSHING PIN

SMALL HOLE

TURN

SHAFT 180 O

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TECH NOTES

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TECH NOTES

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MALLORY

1490 HENRY BRENNAN DRIVE, EL PASO, TEXAS 79936

915.857.5200 FAX 915.827.3344

www.msdperformance.com/brands/mallory/

FRM34418 (REV. B) 09/17

Made in U.S.A.

Printed in U.S.A.


Mallory 3757701 Unilite Distributor - Chrysler 250, 361, 383 & 400 Engines Instructions

INSTALLATION INSTRUCTIONS

UNILITE

®

DISTRIBUTOR

IMPORTANT

TECH NOTES

TECH NOTES

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