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| Spark Plug Gap http://woodsbuggy.com/phpBB3/viewtopic.php?f=3&t=7963 |
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| Author: | afterburnt [ Tue Oct 27, 2009 8:49 pm ] |
| Post subject: | Spark Plug Gap |
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 |
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| Author: | hillaholic [ Wed Oct 28, 2009 1:17 am ] |
| Post subject: | Re: Spark Plug Gap |
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" |
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| Author: | afterburnt [ Thu Oct 29, 2009 11:20 am ] |
| Post subject: | Re: Spark Plug Gap |
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 |
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| Author: | instigator [ Thu Oct 29, 2009 5:34 pm ] |
| Post subject: | Re: Spark Plug Gap |
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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| Author: | afterburnt [ Thu Oct 29, 2009 7:11 pm ] |
| Post subject: | Re: Spark Plug Gap |
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 |
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| Author: | instigator [ Thu Oct 29, 2009 10:58 pm ] |
| Post subject: | Re: Spark Plug Gap |
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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