I have read that the ratio of hp to cubic inch ratio can determine when an engine will need an overhaul. For example:
CAT 3208 with 375 hp with 636 cu in overhaul would be about 5896 hours
DD 6-71 TA with 450 hp with 426 cu in overhaul would be about every 1056 hours
DD 6-71 N with 260 hp with 426 cu in overhaul would be about 6100 hours. A broker once told me that 6-71 N is the best engine ever made - they are bullet proof!
Any opinions on this method? I have read online that heat is the big enemy of any engine. The more hp the more heat produced, and the sooner major overhaul comes around.
I have also read that the cost of an overhaul can be around $3,000 per cylinder! If an overhaul is required every 1000 hours on a DD 6-71TA - I don't think I want DDs in my boat.
AM I WRONG IN MY ASSUMPTIONS?
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11-15-2016 10:27 PM #1Registered Member
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- Jul 2016
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HP to cubic inch ratio - Is it right?
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Tuga