My 216 was stuck when I bought it. I am assembling it right now with the help of the good people on this forum.
It took a couple of weeks to unsieze. Each night I sprayed "liquid wrench" into each cylinder and let it soak in. Each day I pounded each piston with a 2x2 and a large hammer. After a couple weeks I started to get some movement. A couple more days and the crank was moving.
There is some corrosion on the cylinders and crank, but I am not prepared to have this engine rebuilt. I hope it will run, but I don't expect it to run well.
