>>>blow out refering to? blow by? what would happen if the gap is too big or too small>>>naw, when a plug has too large of a gap, in the upper rpm range, the spark plug doesnt perform well, like hesitates, misfires... i dunno what blow out refers to, but its prolly same thing as ^ and doesnt refer to blow by...if a gap is too small u may just not ignite all the fuel in the cylinder. somewhere i read that the diff. heat ranges were for increased performance (modding an engine) and also for different compression. im sure NGK has sum info on it at their website... or hit up www.google.comgood luck
03 srt-4 13.130@112.47mph (n2o, stock turbo, 10/2003)now: 20g, portfueler, bpu+++ (track/dyno times tbd...)i farted on your wiki
