34 Distributor Vacuum Brake

34 fordor owner

Senior Member
Could someone explain what the vacuum brake does on a 1934 Ford dome-style distributor? Could it cause starting issues if not set right?
 
It retards the centrifugal advance weights to limit the amount of spark advance. At the low speed of startup, it is unlikely that the centrifugal advance weights are extended to any extent. Therefore, it is highly unlikely that it is a root cause of any starting issue.
 
It retards the centrifugal advance weights to limit the amount of spark advance. At the low speed of startup, it is unlikely that the centrifugal advance weights are extended to any extent. Therefore, it is highly unlikely that it is a root cause of any starting issue.


Thank you very much!
 
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