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Old 04-19-2012, 05:15 PM   #1
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Default Cold Plug More Power

I've been searching to find the theory behind cold plugs making more power?

I read [wikipedia, O.S. guide] all I got out of them is cold plugs make more power.

http://en.wikipedia.org/wiki/Glow_pl...odel_engine%29

http://www.osengines.com/accys/choosing-glowplugs.html
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Old 04-20-2012, 12:36 AM   #2
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Here is my theory - but it is just a theory. Colder plug=slower combustion = lower engine temp = you can run it leaner.
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Old 04-20-2012, 12:45 AM   #3
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Colder plugs do cool down more betwen the combustions. With the next combustion the plug is colder so to create an ignition the compresion needs to be a bit higher. With other words: a colder plug shifts the ignition to a later moment.

With a shifted ignition you will get more rpm but if you correct the ignition back by lowering the button head you will get more compression giving more power.
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Old 04-20-2012, 04:07 PM   #4
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I'm racing this weekend and I going to try a cold plug during one of my qualifiers. I'm currently use a medium plug with 30% fuel.
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