what is the science behind gaping spark plugs? im running a 2276 msd 6AL box with the MSD distribuator duel 45 dells 11:1 compression. im running 110 race fuel i have been runing NGK iridium IX spark plugs. now how do i figure out where to gap it at? i have been running it at .060 gap. does that sound about right? i havent really been having any trouble, i just went by what somebody was telling me to gap it, but i want to know how you figure out what the gap should be, what's the process.
dave

Quote from MSD tech

"These examples are just starting points to get you going in the right direction. Every application is different and should be tested and tuned:
Compression Spark Plug Gap
Up to 10.5:1 .050 - .060
10.5:1 – 13.0:1 .040 - .050
Above 13.0:1 .035 - .045"

i went ahead and set my gap to .045 i was talking to my one buddy that drag races, he seems to think that the tighter the gap, the hotter the spark is.
dave

to go along with that. the more boost the less gap. i run my blower motor at .016 with a hot magneto.

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thats good to know. i was always willing to believe that the more voltage your ignition puts out, the bigger the gap you could run. i guess i was wrong. seems like this is one of those top secrete subjects nobody talks about or they just refer back to factory settings.
dave

look at it this way. with big comp. or boost you can put the fire out at the plug. with a smaller gap your not as likely to put the flame out.

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