Anxiously waiting for replies...
We've got the same engines (naturally aspirated) with a tad over 3,600 hours on each.
We've only put about 10 hours on em since we picked it up in November 2015.
I've been told they're good to at least 6 times that amount (20,000 hrs), but I'd rather hear from some other sources as well, especially seeing that
Gabe n Em mentioned 1/2 that amount.
By the way, we had both heat exchangers serviced before we took delivery.
I noticed one of the transmissions was running 40° warmer than the other on the sea trials.
Trans housing temps (used a pyrometer) were 100-105° on port, and 140-145° on starboard.
According to the shop, it was the heat exchanger, so for peace of mind we went ahead and had them both done.
Capstan:
Thanks for the suggestion on reading your thread.
Heading over there right now.
Here's a link for your enjoyment
steveb.
http://www.trawlerforum.com/forums/s3/bad-monkey-tail-21283.html