Highest past TBO time seen on io-360?

[hharney]

Normally aspirated, rear engine 2300 hours, front engine 2200 hours. In both cases the engines were still performing fine. The rear was exchanged with a factory reman because the mechanic was concerned about continuing to approve it. The front developed a crack in the block. Treat them right, use them consistently, don't let them sit, one pilot at the controls and these engines will provide you with plenty of life.