PN8504 Datasheet, PDF (1/8 Pages) Mallory performance club – MSD Pro-Billet Digital E-Curve Distributor Chrysler, 318, 340, 360

MSD Pro-Billet Digital E-Curve Distributor
Chrysler, 318, 340, 360
PN 8504 - U.S. Patent 6820602
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Important:  Read these instructions before attempting the installation.
Parts Included:
1 - Digital E-Curve Distributor
1 - Rotor, PN 8467
1 - Distributor Cap, PN 8433
1 - Wire Retainer
2 - 1.5" Self Tapping Screws
1 - 3-Pin Harness
1 - O-Ring
1 - Timing Tape Set, PN 8985
WARNING: Before installing the MSD Digital E-Curve Distributor, disconnect the battery cables.
When disconnecting the battery cables, always remove the Negative (-) cable first
and install it last.
Note: The terminals of this Digital E-Curve Distributor require spark plug style terminals. You may
need to change the terminals and boots of your wires. MSD offers two kits, PN 8849 or PN 8848
that are supplied with nine boots and terminals.
DIGITAL E-CURVE FUNCTIONS
Rev
Limiter
RPM LIMIT
This distributor is equipped with an adjustable rev limiter. It
is adjustable from 5,000 - 10,000 rpm by a rotary dial under
the cap and rotor (Figure 1). The rpm will not exceed your
selected amount to protect the engine from overrev damage.
Timing
TIMING FUNCTIONS
Switch 1
Timing Switch 2
Electronic Advance Curve Operation: The Electronic
Figure 1 Rotary Dial Adjustments.
Advance Curve is managed by a microprocessor built into
the ignition module. You can program an electronic timing advance curve by adjusting two rotary
switches under the distributor cap (Figure 1). A magnetic pickup is used as a trigger device that tells
the ignition module when to fire the coil. The pickup is triggered by a reluctor mounted to the distributor
shaft. This means that you have to set the distributor at the highest, or Total, amount of advance that
you want to achieve (including vacuum advance) and compensate with one of the selectable ignition
curves (shown on page 4). Following are important definitions that will be used to set up your timing.
Electronic Centrifugal Advance: Since this distributor is all electronic, there really is no mechanical
or centrifugal advance. On a standard distributor, this advance would be called centrifugal so it will
be referred to as the electronic centrifugal advance. The chart on page 4 shows all of the different
combinations you can achieve by simply turning the two rotary dials located under the distributor cap.
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