November 2012 Issue
Spark Plugs: Fine Wire or Massive?
Fine-wire plugs may be worth the higher cost for frequent fliers, but there are trade-offs. Champion has taken some hits recently for cracking insulators.
If youre running a normally aspirated, large-displacement engine at least 100 hours a year, we think that fine wire plugs will be less expensive than the massive electrode style when you total up the full cost of the plugs, maintenance and possibly fuel efficiency. And, yes, we recognize that the purchase price of fine wire plugs is two to three times higher than massives.
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