Re: Ignition coil polarity question?

Posted by clooney on April 18, 2000 at 13:21:26 from (207.16.59.151):

In Reply to: Ignition coil polarity question? posted by Mr. B~MI on April 18, 2000 at 09:25:49:

Mr. B~MI, how you doing bliss? You have been given a couple of good answers by Dave & Buckeye Al. Let me put another spin on it. It is the same as changing the polarity on an +/-DC welder. When you change the polarity on the low voltage side of the ign. coil you also change the polarity on the high voltage side. Shouldn't make a difference right... Wrong, when the spark jumps from the center electrode to the ground electrode it is jumping from a sharp edge to a blunt object. Like a DC welder on dc(-). When the polarity is reversed the spark jumps from a flat surface to a sharp object, #1 that takes more Kv to go that direction, #2 just like a DC welder on dc(+) it softens the spark (arc)& melts the electrode easier( burns it & dulls it easier). The more the center electrode is dulled the higher the kv has to be to jump the gap. The same rule applies to the rotor in the mag. or dist. If the spark jumps towards the rotor side electrode it errodes it quite quickly, and makes a nice shower of sparks to boot. These same principals apply to old spark plugs, just re-gapping won't do you also have to file the center electrode flat to remove the round edges.

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• Re: Re: Ignition coil polarity question? clooney 13:46:38 04/18/00 (0)

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