You have oil
analysis indicating metal generation. You have an oil
slick from the exhaust
. You have a desire to learn diesel engine
requires lots of costs you haven't thought about in terms of mounting, exhaust
controls, engine control panels
I would ask myself some questions like:
1 - How long am I keeping this boat?
2 - What is the condition of the externals - alternator
pump, exhaust system, water system etc.?
3 - What is my intended use of the boat? Long range cruising or getting on and off the dock
Option 1 - On and off the dock
use + shorter ownership
horizon? Do nothing, maybe have the injectors cleaned for peace of mind and live with increasing metals and an oil slick. Couple more years use? If you overhaul
it and sell within a couple of years you won't recoup the costs.
Option 2 - Heavy engine use + longer horizon + pretty good accessories - Overhaul
it. You can research
all the parts
costs before you spend a dime. Tear it down and see if the internals warrant a rebuild
. Use a local machine shop for the head
, block and crank work. Cracked head
, worn or cracked crank, shot water galleys in the block = Option 3.
Option 3 - Longer horizon + heavy use + crappy accessories + shot core
. Go with a modern engine and do lots and lots of homework on the installation
. Don't forget mounts, exhaust, maybe rewiring, water inlet, engine controls, engine control panel
If you do a significant amount of the work yourself Option 2 and 3 don't have to be as expensive as if you farm it all out.
In regards to unfinished projects. You definitely have to clear the decks, clear a clean effective workplace and have the money
ready to see it through. Stalling on an engine overhaul and repower could leave you with an engineless boat, no money
and no desire to finish or no way to go forward and no way to go back.