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Re: coils
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Posted by NEsota on December 17, 2006 at 22:10:07 from (64.131.24.88):
In Reply to: coils posted by bm3501466 on December 17, 2006 at 19:33:52:
It has been some years since I had exposure to GM and what they did to get a hot spark but here is what I remember. They switched 12 volts to the primary side of the ignition coils. Pairs of cylinders got ignition at the same time. Thus they did not have to switch the hi voltage of the secondary of the coils. They were claiming as much as 100,000 volts applied to the plugs. The four cylinder engines had two coils and the sixes had three coils. Every plug was fired on every revolution but there was no fuel or air in the cylinder that had just finished its’ exhaust stroke, so nothing was ignited. Pickups, for the primary switching-timing was on the belt pulley drive wheel. One was used for each pair of cylinders. Seems to me that there should be a lot of ignition components in the auto salvage yards that would allow those systems to be installed on tractors.
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