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Marine engines

December 8 2007 at 6:26 PM		RJP  (no login)


Response to 390’s used in trucks
3000 to 4000 rpms even in a large vessel is still not that big a deal as they are under constant and steady load. Providing the oil supply is kept constant and cool and the engines have a compression ratio that will not allow detonation. Marine engine manufactures use 4000-4400 rpms as the redline as that is where the engines produce a good balance of torque, fuel economy and oil and water tempature control and recommend the boat builder to gear and prop their boats accordingly.

RJP


    
This message has been edited by FEfinaticP on Dec 8, 2007 6:55 PM


 
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