[DMCForum] Timing performance engine (Martin G)

["content22207" <brobertson@xxxxxxxxxxxx>]

Forgot to mention:

Another reason guys at the track have to over advance ignition time is
their high rev'ing engines don't produce enough vacuum to operate a
diaphragm.

PRV produces 17 plus inches -- more than enough to advance a rotor button.

Bill Robertson
#5939




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