> " Turns out I have RC12LYC Champion plugs in there. The "L" On Thu, 2 Nov 2006, Sandwich Maker wrote: > the L shouldn't matter. 12 is the heat range, and if it's a 12 it > should be a 12. Well the Champion data that Edelbrock parrots says it's .060" extended tip; why that doesn't simply translate to a higher heat range I don't know. > " So I've mailordered RC9YC's, and will play with timing with > " these colder plugs when those arrive. > > this should be the significant change. Yeah, but I bet it's close. My plugs are whiteish, though not overheating or damaged (10K miles or so). http://wps.com/temp/plug1.jpg http://wps.com/temp/plug2.jpg _______________________________________________ AMC-List mailing list AMC-List@xxxxxxxxxxxx http://www.amc-list.com/mailman/listinfo/amc-list or go to http://www.amc-list.com