671TIB

Author Message   Pete Uhse New member Username: puhse Post Number: 1 Registered: 08-2009 Posted on Thursday, August 20, 2009 - 04:56 pm:    I have 1993 43' Viking converible with 67TIB Detroit Diesels. I have seen some postings about cruising RPM but I am still questioning what the engine can handle without running it too hard. My top RPM is about 2500rpm. I have been currently running them at about 2150. I was told that I can run them all day long at 90%. Is this true? It doesn't seem as though I am getting the speed out of the boat that I should be. I currently cruise at about 19 to 20 knots.

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