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FUSHIGI
Join Date: Feb 2006
Location: somewhere between here and there
Posts: 10,810
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IIRC, piston bore scoring was an issue for Non-turbo engines. The turbocharged engines were equipped with dry sump oil circulation and piston oil squirters for cooling purposes. A side effect of that cooling effort was superior piston skirt and cylinder bore lubrication. I hope I'm remembering that accurately.
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