The IGN-4 four tower ignition coil is an affordable option for a hot distributorless ignition! Similar to our IGN-1A coil, but this unit has four outputs that fire in wasted spark and does not have a built in ignitor. If used with our BIP373 ignition modules we recommend 3.0-3.5 ms dwell though you should fine tune this for your application. Perfect for a four cylinder engine, or use two for a V8. Uses standard HEI type spark plug boots.
The center pin on the connector is a 12 volt supply. Each of the two side pins connects to a coil driver such as a BIP373 or QuadSpark and fires the two posts on the same side as the connector pin.
It is not necessary to ground the coil mounts.
The coil measures approximately 4 7/8" wide, 3 1/4" across, and 2 5/8" tall.
Primary Resistance: 0.5 Ω +/- 10%
Primary Inductance: 4.8 mH +/- 15%
Secondary Resistance: 8.5 kΩ +/- 20%
Secondary Inductance: 22.5 H +/- 20%
Output Voltage: 41 kV +/- 10%
Output Energy: 118 mJ +/- 7%
Peak Secondary Current: 100 mA +/- 7%
Arc Duration: 3.2 mS +/- 10%
Turns Ratio 71:1
Maximum Battery Voltage: 17 Volts
Standard Dwell: 3.0 mS