Did some work today. See pics of my improvised short term solution for the expansion tank. My car will be in an art museum for a month in a week and a half, and I don't have time to properly remove/repair the tank before then. A very ghetto repair, but now the tank doesn't vibrate out of sync with the engine any more. Drilled and tapped a piece of scrap pine (from a stake) for a spare bolt I found, then shaped it with a knife to fit with just a little upward pressure on the tank, then adhered a little pad of hi temp silicone to dull any micro impacts.
And speaking of vibrations. See the p