[Jack Shaft]

The tolerance for timing deviation decreases when compression is increased, the 'hammer' effect of detonation increases when you raise compression and efficiency. Detonation can lead to bearing failure. Those are facts, actual practice and anecdotal evidence as Brent cites should bear weight in the decision as well. Me? the overall advantage of running a centrifugal advance distributor is without question, but I understand the desire for the original look.

Those that opt for performance increases without performing all maintenance requirements are asking for trouble and when it occurs they often blame the performance parts for the failure.