Specifications
Choosing a High Performance Ignition Coil
Which coil would you rather have? One that generates the highest spark voltage, or one that generates the highest
spark energy? If you said the highest spark energy, you are right. Here is why! How much voltage a coil can
generate is no indication as to how high the spark voltage really is. The spark voltage can only go as high as is
needed to jump the spark plug electrode gap, never higher. That means if the spark plug gap is wider or the
compression higher, more voltage is required to jump the electrode gap. Close the electrode gap and the voltage will
be lower. Leave the electrode gap the same but change the coil to a high voltage coil, and the spark voltage will be
exactly the same. Most engines require from 8 K volts (steady speed highway cruising) to 25 K volts (hard acceleration).
Rarely is there a requirement for more than 25 K volts. So why buy a coil that can generate 60 K volts? It is the
energy that is important, not the voltage. Higher spark energy assures faster combustion and increased probability
for combustion initiation. Energy, not voltage, ignites the fuel. There is another negative aspect to high voltage
coils. In order to be able to generate a theoretical high spark voltage, the coils end up having a long saturation time,
detrimental for high rpm applications.
The design of Nologys line of ProFire
ignition coils was based on that general principal. Pr oFire
coils deliver
the highest possible spark energy and offer the fastest saturation time for high rpm engines. This is achieved by
utilization of the most efficient turning ratio and laminated E-core material, and by choosing just the right amount
of inductance. By using this high efficient laminated material for the E-core design, high magnetic field strength
and energy can be generated while overall coil temperature stays low. This high energy gets transferred to the
secondary side where the optimum turning ratio between the primary and secondary side of the coil guarantees
maximum spark energy.
If you are looking for a high performance ignition coil that has a short rise time for high rpm applications and
generates a spark that carries maximum energy, take a look at Nologys line of Pr oFire
ignition coils. Unlike most
ignition coils, ProFire
coils are designed for specific applications. Two coils are available for points ignitions and
two for electronic ignitions. There is one coil for medium-powered CDIs and then there is the M80 for high output
racing CDIs. The M80 is considered by many to be the most powerful coil available.
THE INTELLIGENCE OF SPEED
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