Spark plugs

[Greg Hermann]

At 11:22 AM 12/7/01, bill.shurvinton at nokia.com wrote:
>Hi,
>
>Back to DIY with a quick theory question on spark plugs. I was reading
>some conjecture
>somewhere that plugs with >1 ground strap actually shroud the spark and
>that you would get improved performance by grinding off the extra
>straps. Proviso being that if you go from 4 straps to 1 you also get a
>4:1 drop in plug life.
>
>On the face of it this sounds correct, but my spark propagation theory
>is lacking a tad so I wondered if the old hands (OK Bruce) had any
>thoughts or practical experience on this.
>
>On a related topic for those of us who are still new to the arcane arts,
>is there a good primer on how to tell if you plugs are too hot/cold. It
>seems to be one of those areas where it's deemed that if you don't know
>then you shouldn't be messing with them. All I know is that mine are
>well worn after 2000 miles, which seems to indicate something is wrong.
>
>Rgds
>
>Bill

Is this in a piston or rotary engine, Bill ??

Greg


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