<VV> Spark plug gaps
kenpepke at juno.com
kenpepke at juno.com
Thu Sep 20 09:48:22 EDT 2007
> Wide gaps require a hotter spark to bridge them.
> But does anybody have any EVIDENCE either agreeing or DISagreeing with
>my suspicion that our engines would work better with a greater gap?
> Frank "questioningly" Burkhard
-------------------------
Early 'stock' ignition systems used a small .025 through .036 gap, depending on
factory specs. The spark was usually around 30,000 volts but at a relatively high
amperage. It was the 'hot' amperage that eroded the plugs so quickly. High
voltage systems generally make double the voltage or more ... but at a fraction of
the amperage. The spark is capable of jumping a much greater gap at the plug and
the lower amperage allows the plugs to last much longer. The down side is the
high voltage / low amp systems do not clear themselves well after a flooding condition.
Ken Pepke
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