Quote:
Originally Posted by MazdaMatt
That's pretty solid. Just wondering... this no-alternator business has me a little skeptical... spark plugs are supposed to work with a 14v feed and you're only giving them 12... do you think maybe if you drop the alt you should re-gap your plugs? I would think the spark is much cooler and it should be adjusted.
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The voltage depends on the inductance of the coil and the rate of change of the current, which should both be fixed and independent of the battery voltage up to a point, so I don't think using 12V instead of 14V would change the spark plugs that much since it only takes a few milliseconds for the battery to increase the magnetic field in the coil.