Quote:
Originally Posted by PeteKz
The conductivity difference in silver, copper, platinum, iridium, etc. of the plug electrodes makes no difference in performance for several reasons.
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This is incorrect. Especially in race engines where cylinder pressures and temperatures can be much higher. You want to use iridium plugs in a race engine? Go for it. My high compression race engine runs better with Brisk silver race spark plugs. Again the superior electrical and thermal conductivity of silvers certainly comes into play here.