Testing ignition coils.
Coil No.1 3IC2R Coil No.2 3IC2R
Coil Voltage 12 12
Coil Primary 11.2/8.2 11.2/8.2
Coil Secondary 9k 1.
The difference in these two coils, although exactly the same modle
Wasted Spark Coil Pack
No.1 No.2
Coil Primary N/A N/A
Coil Seconday 5.65K 5.81K
Wasted spark ignition works by firing two cylinders with one coil . Everytime a spark is fired two cylinders are fired but as only one cylinder needs the spark, the other cylinder is 'wasted'.
Ballast Resistor specs
BR3 BR2
1.5-1.7 ohms 0.5-0.7 ohms
Measured resistance
1.7 ohms 0.6 ohms
The ballasts resistors purpose is to limit current from the battery to the coil. This will prevent heat building up inside the windings and buring them out causing a short.
Yes that is the purpose of the ballast resistor but why does it need to limit the current, why do we not jst build a coil that can work with 12v?
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