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CR : I was thinking about having the head milled (10,5 is 1,5 mm if my calculations are correct)
So far I hope to just DIY a basic overhaul with the only outsourced operation being the head milling (I'll first investigate a thinner base gasket)
Polishing is also about running cooler, heat being reflected more efficiently through less surface exposed to the flame front.
The engine does not have an oil cooler so it is a predominant factor.
Friction work seems interesting for the bottom end wich I hope I won't need to work on.
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