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Ignition Coil Sports Type DLB110
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Genuine Lucas Sports Coil 6Volt for use with a ballast resister or ballast wire as found on Mk2 Cars.
These sports coils when used with Sports Electronic ignition, like for example Lumenition Performance Magnetic as opposed to standard Lumenition Optronic systems, can be asked to produce higher high tension voltage than standard.
They will produce up to 40,000 Volts.
To achieve this the spark plug gap is opened to 40K
This can improve performance
Normal coil output is 25,000 volts.
The ignition leads sold on this site can handle up to 30,000 Volts. If you wish to use the full 40,000 then it is wiser to invest in some ignition leads suitable for purpose.
We are also advised that it is likely the Rotor Arm and Distributor cap will need replacing more frequently when used with extra wide Spark plug gaps.
NOTE
Why a 6 volt coil in a 12 volt car?
With the points closed, current will flow as follows: battery to ign switch to ballast resistor to coil to points and finally to ground.
With an assumed charging voltage of 14 volts at the battery, we can measure voltage drops of about 8 volts across the ballast and 6 volts across the coil. THIS MAKES THE COIL OPERATE ON 6 VOLTS WHICH INDICATES THAT IT IS A SIX-VOLT COIL.
But why have a Ballast resistor? To stop points or Electronic seeing too much voltage and burning out.
However it is "by passed" by direct supply from the starter solenoid during engine start meaning a full 12 volts is applied to the coil increasing the spark voltage for quicker fire up.
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