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Ignition
Created: September 26, 2000
Establishing an accurate TDC reference point is of paramount importance when developing and monitoring ignition timing (and cam timing come to that). When an experienced engine builder assembles an engine - no matter whether for road or race - he will establish an accurate TDC indicator that can be used for ignition purposes.
Created: September 25, 2000
Any deviation away from the original standard engine specification, or where a dizzy from another source is used in the engine you have, the ignition timing will generally be different from that set by the manufacturer.
Created: September 15, 2000
Any dizzy can be set to get maximum power. No problem. Unfortunately that's only one spot on the whole power curve/rpm range. If the curve isn't right elsewhere, the engine will be either loosing power - in some instances by substantial amounts - or detonating its self into oblivion and a costly re-build.
Created: September 15, 2000
Since the A-Series has such an efficient combustion chamber design, the standard points set-up is perfectly capable of providing sufficient sparks for effective combustion when new. And this is the problem. They require regular servicing to maintain maximum performance. This can be a chore, so is generally neglected.