You course of action could also be guided by the general condition of your engine and your future plans.
4108M looks to be about 25 years old, which is starting to get a little long in the tooth. It appears to be a common engine so spares should be available.
If your engine is in top notch order, has always been well maintained and has low hours then repair may be a viable option.
If it is in poor condition, has high hours and has a patchy maintenance record
then replacement may be an indicated.
Before spending any money
at all I would suggest pricing out a complete overhaul
. Check that parts
are available and reasonably priced. Especially check that all gaskets can be readily sourced as can major items like oil
and injector pumps.
Don't forget to factor in the condition of the gearbox
. Cruising yachts can run their engines at 80% power for lengthy periods, and the gearbox
may not be rated for this.
Treat any advice about repairing the engine with scepticism. I found myself some $3,500 out of pocket with a month wasted before it became clear that several mechanics and a surveyor
has provided inadequate advice and the engine had to be replaced.
While 50hp in a Beneteau
456 is fine for local cruising or racing
, long distance cruising may indicate a larger engine and higher rated gearbox.
It may be possible to spend more on repairing an old engine than the cost of a new one.