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Message: <blockquote data-quote="Pappy" data-source="post: 420079" data-attributes="member: 3278">How would you know. On that engine there is no hot horn. The only way to tell it is hot is when the engine seizes or you get lucky and blow a head gasket which doesn't happen often on that engine. You could be running very close to that point and never know it. The overboard indicator is not a "Okay, boss, we're good to go here" indicator. It simply indicates the water pump is pumping something (volume wise)...not that there is sufficient pressure and volume to support adequate cooling at WOT.NO overboard indicator indicates there is sufficient cooling water available to cool the engine at WOT.  </blockquote>