PN6427 Datasheet, PDF (1/12 Pages) Mallory performance club – MSD Circle Track Ignition

MSD Circle Track Ignition
PN 6427
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Parts Included:
1 – MSD Circle Track Ignition
1 – Harness, Mag Cable
1 – Engine Harness
1 – Parts Bag
WARNING: During installation, disconnect the battery cables. When disconnecting, always re-
move the negative cable first and install it last.
OPERATION AND FEATURES
The Digital 6CT uses a high speed RISC microcontroller to control the ignition's output while con-
stantly analyzing the various inputs such as supply voltage, trigger signals and RPM. The high
speed controller can make extremely quick compensations to the output voltage, multiple spark
series, timing and RPM limits while maintaining precise timing and accurate rev limiting. The circuits
and controller of the MSD have been thoroughly filtered to create protection against Electro Mag-
netic Interference (EMI).
Note: Solid core spark plug wires cannot be used with an MSD Ignition Control.
Note: Do not use digital or dial-back timing lights.
CAPACITIVE DISCHARGE
The Digital 6CT features a capacitive discharge ignition design. The majority of stock ignition
systems are inductive ignitions. In an inductive ignition, the coil must store and step up the voltage
to maximum strength in between each firing. At higher RPM, since there is less time to charge the
coil to full capacity, the voltage falls short of reaching maximum energy which results in a loss of
power or top end miss.
The MSD Ignition features a capacitor which is quickly charged with 520 - 550 volts and stores it until
the ignition is triggered. With the CD design, the voltage sent to the coil positive terminal is always
at full power even at high RPM.
MULTIPLE SPARKS
The MSD produces full power multiple sparks for each firing of a plug. The number of multiple sparks
that occur decreases as RPM increases; however, the spark series always lasts for 20° of crankshaft
rotation. Above 3,200 RPM there is simply not enough “time” to fire the spark plug more than once,
so there is only one powerful spark.
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