MSD 8394 Digital E-Curve Distributor Installation - Manual

MSD Pro-Billet Digital E-Curve Distributor
PN 8394 - U.S. Patent 6820602
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
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.
Note: If the gear is ever replaced, MSD Gear (PN 8531)
is required for replacement due to the .500"
diameter shaft.
DIGITAL E-CURVE FUNCTIONS
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 FUNCTIONS
Electronic Advance Curve Operation: The Electronic 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.
1 - 3-Pin Harness
1 - Gasket
1 - Tube of Gear Lubricant
2 - O-Rings
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.
Figure 1 Rotary Dial Adjustments.
Timing
Switch 1
Timing Switch 2
Rev
Limiter
ONLINE PRODUCT REGISTRATION: Register your MSD product online and you’ll be entered
in our monthly 8.5mm Super Conductor Spark Plug Wire give-away! Registering your product
will help if there is ever a warranty issue with your product and helps the MSD R&D team create
new products that you ask for! Go to www.msdperformance.com/registration.
M S D
• W W W . M S D P E R F O R M A N C E . C O M • ( 9 1 5 ) 8 5 7 - 5 2 0 0 • F A X ( 9 1 5 ) 8 5 7 - 3 3 4 4