Status update....after three days and endless cycles of soaking, heating and beating I finally got the piston and cylinder to separate. Moped Lars stopped by and pronounced the cylinder to be in pretty great shape and can just be honed out. He also confirmed I have spark, and helped me to reassemble the top cover and slider of the carb. The piston rings are frozen solid to the piston. He says they will need to be replaced.
The gas tank was badly rusted. The petcock was completely blocked. It has been removed and will be replaced. The tank was filled with white vinegar for three days, with the tank flushed and refilled daily. I set up a compressed air ‘bubbler’ using an air nozzle from my compressor and that seemed to help in the cleaning process. Yesterday afternoon I switched the vinegar for Evapo-rust. I will flush and refill again later today.
Anyone have a #22 piston and rings set they are willing to sell, or a recommendation on where to purchase them? If I have to replace the cylinder and piston/rings as a kit, is there a recommendation on a specific kit to purchase? I would like to keep this as stock as possible.