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Old 02-20-2017, 11:02 AM   #25
DavidM
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City: Litchfield, Ct
Join Date: Aug 2012
Posts: 6,785
That sure looks like a DD 671 powered trawler to me.

Post the entire oil analysis. Ski can give you some pointers.

A new Cummins 6C reman will cost at least $30,000 with transmission. You will benefit from better fuel consumption (18-19 hp/gph vs 16), less noise, no oil leaks and a new engine warranty. Is that worth it to you?

You can use tractor, construction or over the road diesel and assuming you currently have keel cooling and dry stack exhaust you can probably cobble together something for 1/3 of the above. It will not have a water cooled exhaust manifold however. That is a big negative for me, but lots of others say they are fine.

If the current 671 is really trashed, I think I would go that route.

David
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