Well, my Tampico's Lycoming O-320-D2A, configured for a fixed-pitch propeller, has finally given up the ghost. 6,000 hours TT, 34 years old, 1800+ SMOH, and 28+ years SMOH. It had a good run, but it's done now. Making a LOT of metal.
The good news is that I have a new-old-stock Lycoming...