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Old 09-05-2020, 11:12 AM   #24
johnneilson
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Join Date: Jun 2010
Location: 34.22 N 118.36 W
Posts: 1,059
Default Re: Model A Distributor with Centrifugal Advance

On the subject
I have found that spark plug positioning in flatheads will influence the need for less spark advance
Compression and the condition of the balance of the motor allow for more or less advance

Getting into overhead designs the advance curve will be much different

John
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