Ted,



After reading your YBM article, I have to wonder why new plugs come with such a long strap? If the more exposed spark allowed better starting/combustion efficiency, why would the shrouded design persist? I never see any significant conductor erosion on old plugs, so the excess material seems redundant/wasteful. Maybe the amount of steel saved would never justify cost of retooling?

6 VOLTS/POS. GRD. NW INDIANA