I don't think the battery is a factory type
Jim
Maybe that was the cause ?? By the way, I got a charge out of your comment. It was a very electrifying experience - especially since my wife was alone driving it when it started to overheat. While she was at a gas station calling me (pre-cell phone of course), she saw smoke and flames coming from under the hood. Luckily, the Fire Department got there rather quickly, and had it out before it got past the firewall ; although I didn't like it that they took as fire ax to the engine.
Actually, the best I could tell afterwards, it was a gas ignited fire. This was odd for an engine that never leaked a drop of oil, water or gas. Only thing I came up with was that something caused the engine to overheat, and with the added 104° Summer temperature, the gas boiled out of the carb and hit the hot engine - poof.
Bob