In looking on the used markets, I'm seeing the 12V71Ti's in the 60+ ft. boats.
How are the life spans on these versus the motors on the 53's and 58's? Any difference?
Thanks!
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In looking on the used markets, I'm seeing the 12V71Ti's in the 60+ ft. boats.
How are the life spans on these versus the motors on the 53's and 58's? Any difference?
Thanks!
Nothing to add as far as life, but lots of 53's have 12v71's. I would think a mild tuned 12v71 would outlive a hopped up 8v92. Simply put each cubic inch is producing fewer ponies. Pretty much in every situation this is going to result in longer diesel engine life.Quote:
Originally Posted by Bob Quinn
Divide the HP into the displacement. The lower the ratio, and the further below 1:1 you can be, the longer the life span, in theory.
Example: a "basic" 6-71 produces 216 HP..... 216/(6*71)=216/426=50%
The 6-71TI produces 485 HP which is 485/426=113%
Pretty clear the latter will have a higher chance of a coronary long before the former.
But, and it's a HUGE but, that is of course subject to all else being equal. How was it run, and how was it maintained. A properly maintained and run TI has a better chance than a natural that was neglected and abused.
So there is no simple answer to your question.
That all sounds logical. I will have to look at the HP's and displacements.
Thank you!
Bob
Different beasts. 71 series is a dry liner engine 92 is a wet liner. 92’s are easily damaged by overheating and poor coolant management. Most MY engines fail from poor maintenance and lack of use than hours. All these engines in charter or commercial use run far more hours than the weekend warriors
I'd say this is true with pretty much all marine diesels. Rarely does a rec user kill an engine due to hours, usually it's lack of cooling passage maintenance that leads to an overheat that kills them. The higher hp ratings have MUCH less room for error on cooling so lack of maintenance usually shows up much quicker on them than say a trawler or hull speed application.Quote:
Originally Posted by rsmith