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Big end bearings (Three bearing engine)
#13
Oil flow through the big end bearing only accounts for about 50% of the cooling, the rest is conducted away through the shaft (subject to decent contact as mentioned by Colin, and I would add good surface finish is important, not only snug fit). On engines with intermediate plain main bearings oil flow through those takes most of the remaining heat out of the shaft.
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RE: Big end bearings (Three bearing engine) - by Chris KC - 05-06-2020, 01:57 PM

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