what should i gap my spark plugs at right now i'm at 140 psi compression on each side with cool head and 19cc dome spark plug at 28
br8es 100LL GAS BUT I WANT TO INCREASE my compression by going to 16cc domes and mabe use 110 race fuel or c16
should i gap my plugs still at 28 or 18 ? Also is there some kind of chart tells you what type of fuel to use depending on what compression you have ?