We first thought the high temp on the oil was due to a couple of small exhaust leaks at the cylinder flange blowing on the push rod tubes. The AI was in the process of replacing the gaskets when he asked if I had cut the filter open. He too was worried about the source of aluminum that you alerted us to. There was nothing in the filter material but the bottom of the filter looked like glitter.
He stopped the reinstall and we both decided to pull a cylinder to inspect. We did, and found that the wrist pin had abnormal wear,(to say the least first pix). Not what I wanted to see. Unanimous decision was to pull all 6. Not good, it appears that the overhaul was better on paper than reality. Four of the six wrist pins are the same.
I am fortunate in that the AI’s father owns an aircraft engine shop. He stopped by and within 10 minutes found that the connecting rod bushings were worn more than 371 hours could do. Long story short, we are going to pull the engine for a complete tear down and hopefully it can be overhauled right. Thank you and Blackstone for possibly saving our lives. The next time you get an oil sample it will either be a newly overhauled or a new engine.
