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998 American Hotrod Motorcycles
Home › Forums › Parts & Technical Info › Re: Spark Plugs -from S&S Tech Tips
Home > Ignition > Spark plug gap S&S Cycle Tech Tips
[Spark plug gap]
What should I run for spark plug gap and spark plug brand?
S & S has used the following spark plugs in V2-Style Long Blocks with good results: Autolite 4265, Champion RN12YC, Harley-Davidson 5R6A, and NGK BPR 4ES. In general, same spark plugs work for Shovelheads if equipped with S & S Shovel-Style cylinder heads or 1975-1984 Harley-Davidson cylinder heads designed for long reach plug.
Install spark plugs with gap recommended by ignition manufacturer. Typically, .035-.045″ is recommended for electronic ignitions, .022″ for points.
* This is from S&S website Tech Tips *
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