What do you think of these bore pics on 9.9 outboard

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Mar 19, 2022
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This is an early 1990s yamaha (2 stroke) 2 cyl. These are the exhaust ports, and a couple of what I could see of the intake ports.

not sure what the marks are above the exhaust ports, this engine looks to have been apart at some point.
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Looks OK for the most part. In my opinion, the lines or score on the cylinder look very much like the scoring caused when running suddenly higher speed or power while the engine is cold or when first started (cold seize)
 
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This is the era of Yamaha that recommended 100:1 oil. I have no idea how many hours are on this. Got $500 into it, I'm really looking for a 15HP OMC from the mid 1970s-1990s.

This Yamaha is an obvious OMC clone powerhead, and Merc lower.
 
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