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Originally Posted by Excaliber
Removing the BALLAST RESISTOR will allow max battery voltage to the PRIMARY coil windings and depending on WHICH coil your using could burn out the coil.
I fail to see ANY connection between a high or low voltage coil being the cause of preignition or detonation. While the coil is running on max primary voltage the SECONDARY high voltage it may (or may not) provide to the plug is not a 'bad thing'.
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I have to agree 100%.
Pre-ignition is when the fuel ignites before the plug fires. The ignition system has nothing to do with this.
Detonation is more difficult to explain. Under normal combustion, the spark plug lights off the fuel. The fuel burns in a controlled mannor from the spark plug across the combustion chamber in all directions until all fuel is burned. During the controlled burn, as the flame front travels across the combustion chamber, an uncontrolled explosion of the remaining fuel charge is called detonation. This can be caused by timing too far advanced, fuel mixture too lean, too much compression for the octain of the gasoline, and other things as well. Again coil voltage has nothing to do with this.
I hope what you thought you heard was not what the expert meant. Otherwise they are not the experts you think they are. The ballast resistor had nothing to do with it. Yes, I 100% agree that detonation was the likely cause. Detonation can take an engine out in seconds.
When it happened is unknown. Unless you have a warrenty in writing, I doubt you have a leg to stand on.
The easiest defense against you would be to claim you put too low of octain fuel in the car. The next thing is claim that the timing was moved by you. It doesn't have to be true, just create some doubt.