I don't see super high water temps either but oil temps often get into 240F territory during a long session. Add hot thin oil, no motorsport pan baffle, and no oil scavenge pump in the RF head and you have a good chance for scored mains and rod knock.
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2009 Cayman 2.9L PDK (with a few tweaks)
PCA-GPX Chief Driving Instructor-Ret.
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