I recently purchased a 31' Cheoy Lee
Monterey Clipper Troller with this engine
. From what I have been told on other forums
these are "workhorse" engines in that they are used in generator
field pumps, etc. and are basically bulletproof. That being said, my prior trawler
had perkins 6.354's so I am familiar with perkins. The current engine
has approx. 1200 hours and is probably about the same age as the one you are considering. It took less than one revolution to fire up, runs smoothe and at wot no overheating
or oil pressure problems and most of all no smoke!
are readily available as well. I have dealt in the past with TransAtlantic Diesel
in Whitemarsh, VA (tadiesel.com). They have all parts for this engine as well as rebuilt kits, elbows, etc. Sherry in the parts department is great to deal with and incredibly knowledgeable.
Hope this helps,