Quote:
Originally Posted by ldj1002
There will be a difference in test results in a 12v coil that is to be used with a resister than one that doesn't need a resister. Also a 12v coil that doesn't need a external resister will test very close to a 6v coil. Would that 12v coil be ok on on a 6v car?
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That coil should give you enough spark to run the car, but it may be a bit weaker since you mentioned that it has an internal resistor. A better choice would be a 12 volt coil that needs an external resistor. Then when it's run on 6 volts you'll get a hotter spark than the 12 volt coil with the internal resistor.
I find 6 volt coils at most swap meets and don't recall buying a bad one yet. That's because so many coils are needlessly replaced.