by Dan Masters, danmas@aol.com , and Bob Sykes, s1500@worldnet.att.net
Most LBCs use this type of ignition system. Later cars benefit from the miracles of Electronic Ignition systems which are not described here, but most of the same principles apply. One can think of electronic ignitions as "improved points."
The basic ignition system consists of; the Ignition Coil, Points, Capacitor (aka Condenser), Distributor and Sparking Plugs. A ballast resistor may also be included in this system. Various bits of wire connect all these parts together and move the electrons to the right place at the right time, hopefully. Without the aid of diagrams, the scope of this is limited, but the function of each component is described briefly below, For simplicity's sake, no formulas will be used, only descriptions of the various aspects.
Typical IgnitionCoil ParametersTurns Ratio 100:1 Secondary 25,000 turns #41 Primary 250 turns #22 Primary Inductance 6 to 10 mH Primary Resistance about 1.5 ohms Secondary Inductance 40 H Secondary Resistance 10 kilohms
This really only scratches the surface of ignition systems. You have been spared topics like Cylinder pressure, Ignitionvoltage waveshape, Timing, Capacitance, Inductance, formulas with Greek letters and other technical mumbojumbo. But then there's always part 2.....
Dan Masters, danmas@aol.com
Bob Sykes, s1500@worldnet.att.net
