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THEORY OF OPERATION;
THE STACKER ADVANTAGE
The MSD Stacker Ignitions utilize the best characteristics of both the conventional factory
inductive ignition and a multiple sparking, capacitive discharge (CD) ignition system. The
inductive side of the ignition provides the engine with a long duration spark while the Stackers
CD design provides a full power spark with high voltage and energy. The Patented design of the
Stacker Ignitions allow the system to run parallel with the stock ignition resulting in simplified
installation and compatibility with the rest of the vehicle’s electronics.
CAPACITIVE DISCHARGE: The MSD Stacker Ignitions feature a capacitive discharge
ignition design. The majority of factory 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 resulting in a loss of power or top end miss.
The MSD Stacker Ignitions feature a step up transformer and capacitor which is quickly charged
to full power (120 millijoules) in less than one millisecond. This produces a full power spark
throughout the entire rpm range of the engine.
MULTIPLE SPARKS: Due to the quick charge time of the Stacker’s CD design, they are
capable of delivering a series of full power sparks to each spark plug. Under 3,000 rpm, the
Stackers deliver a series of sparks that lasts for 20° of crankshaft rotation for each firing of the
spark plug. The number of sparks that occur depends on rpm. Above 3,000 rpm there is simply
not enough time to fire the spark plug more than once, but there is always one full power spark.
The high output and multiple sparks of the Stacker Ignitions work together with the stock
inductive spark to ensure complete combustion of the fuel mixture. Improved combustion results
in quick starts, smooth idle, quick throttle response and increased performance.
$350
THE STACKER ADVANTAGE
The MSD Stacker Ignitions utilize the best characteristics of both the conventional factory
inductive ignition and a multiple sparking, capacitive discharge (CD) ignition system. The
inductive side of the ignition provides the engine with a long duration spark while the Stackers
CD design provides a full power spark with high voltage and energy. The Patented design of the
Stacker Ignitions allow the system to run parallel with the stock ignition resulting in simplified
installation and compatibility with the rest of the vehicle’s electronics.
CAPACITIVE DISCHARGE: The MSD Stacker Ignitions feature a capacitive discharge
ignition design. The majority of factory 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 resulting in a loss of power or top end miss.
The MSD Stacker Ignitions feature a step up transformer and capacitor which is quickly charged
to full power (120 millijoules) in less than one millisecond. This produces a full power spark
throughout the entire rpm range of the engine.
MULTIPLE SPARKS: Due to the quick charge time of the Stacker’s CD design, they are
capable of delivering a series of full power sparks to each spark plug. Under 3,000 rpm, the
Stackers deliver a series of sparks that lasts for 20° of crankshaft rotation for each firing of the
spark plug. The number of sparks that occur depends on rpm. Above 3,000 rpm there is simply
not enough time to fire the spark plug more than once, but there is always one full power spark.
The high output and multiple sparks of the Stacker Ignitions work together with the stock
inductive spark to ensure complete combustion of the fuel mixture. Improved combustion results
in quick starts, smooth idle, quick throttle response and increased performance.
$350