Quote:
Originally Posted by dmjlambert
How does the ignition timing control work? Does it require a special distributor with electronic gizmos in it, or does it control the timing by varying vacuum going to the can on the distributor? Some sort of knock sensor required?
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Holley sells a distributor called the Hyperspark that is designed to work with the Sniper. It is actually a very simple distributor with no vacuum advance or mechanical advance. It just has a sensor that detects the orientation of the rotor and sends its readings to the Sniper. The Sniper adjusts the timing as it sees fit by controlling the angle at which a spark pulse is sent through the ignition system. The rotor/cap can conduct spark pulses within a fairly wide angle range (the rotor doesn't have to be perfectly aligned with the cap contacts). There is no knock sensor.