alternator belt for 1/ 4 mile

- Low voltage (<12v) will cause less spark-energy which can cause slower ET.
- Evenso, are you running the coil with or without a ballast resistor? Without one will let the coil make more spark-energy, but it will heat up a bit more aswell. Mount it in a cool place.
- That plastic fan is pretty useless imo.

Any more enginebay pics?