I had to pull the port exhaust from both motors in the fall to allow me to get to the remote oil hoses for replacement. I had taken pictures of the exhaust valves and one of them has what I would assume is oil on the valve and a little on the stem. I know the exhaust stem seals can be trohblesoon on these motors. They’re 5.7efi’s with about 750 hours on them. No issues running, but I will get a hint of smoke at startup if they’ve been sitting for a while. This pic was taken about 36 hours after the last run (which was on muffs with the fogging cocktail run through.
Opinions? I don’t plan on necessarily doing anything about it now but I’m wondering if there’s some PM I should think about. Compression was outstanding on all 16 cyclinders when we bought her 3 years ago
The first two are of what I would consider “normal” looking at the last one is the valve in question. Also, neither engine burns any oil and entire exhaust was replaced when I bought it
Opinions? I don’t plan on necessarily doing anything about it now but I’m wondering if there’s some PM I should think about. Compression was outstanding on all 16 cyclinders when we bought her 3 years ago
The first two are of what I would consider “normal” looking at the last one is the valve in question. Also, neither engine burns any oil and entire exhaust was replaced when I bought it