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Old 01-19-2020, 03:01 PM   #15
BUBBAS IGNITION
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Join Date: May 2010
Location: SPEEDWAY INDIANA
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Default Re: Distributor vacuum brake question

Quote:
Originally Posted by flatjack9 View Post
I understand the operation, it is just that I cannot see how the plunger is said to stabilize timing.
watching the spark timing on a distributor machine without the piston the spark lines kinda jump from side to side at idle. These units dont ever show wear and even a new one shows the same looseness. ( they would need to be loose to work). When piston and leather with some spring tension on the ring the spark lines are very stable on the machine , would be the same using a timing light on the pulley. Just something we have noticed , i seems to learn something on every rebuild and test .......
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