Quote:
Originally Posted by Pparana
Copper spark plugs are generally considered to have the best performance of any spark plug type. This is potentially different from what advertising companies suggest, but the other metals are, unfortunately, not as conductive in general as copper is. Platinum and iridium plugs are more likely to overheat, which causes damage to the plug components and can compromise the delivery of the spark to the engine block (hence the need for 1- 2 ranges cooler). The main use for platinum and iridium plugs is longevity.
If you run Platinum and Iridium .022 is the gap, copper, .018, as it will wear quickly to .022 in a few thousand miles.
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Very interesting and informative. You're right though, copper is one of the most conductive metals. Might have to give those copper plugs a try.
Is there a particular socket I need to install them?