View single post by Tim Murphy
 Posted: 06-24-2024 05:16 am
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Tim Murphy



Joined: 03-22-2005
Location: Huntington Beach , California USA
Posts: 96
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 As I understand, the vacuum retard was for emissions purpose only. So set it up with and without vac advance to see which gives the best, most accurate advance. Another note, the max total advance of 27 degrees BTDC is said to be tested as best.