Time for my 2 cents worth. I agree with all the comments about turbo not being the best option for the normal sailboat applications. If we are all unable to convince you, then here are a few things (based on my experience) to watch for/do.
1. Back pressure caused by wet exhausts, especially ones that exit below the waterline can cause a lot more axial thrust than the turbo is designed to deal with. Make sure you have a back pressure test performed after installation
and that it conforms with the manufacturer's specs.
2. Make sure that normal air flow in you engine compartment (with the engine not running) does not cause the turbo to turn. Not as likely with a wet exhaust and trap but still possible. This will lead to expensive failure.
3. Learn how to remove the compressor
housing and clean the dirt from the turbine and housing, especially with a crankcase breather return into the air intake. Even what may just look like a stain can dramatically reduce the turbo performance. Do this at each oil change
. A lot of people get scared of touching a turbo and this myth has been propagted by the servicing industry. As long as you don't go any further than the compressor
housing and use a good solvent and soft brush you won't get into any problems.
If you fly me to wherever you are I can show you how
Wheels, where can I source one of those cartridge pressure pot thingies around Nelson/Marlborough. They sound just the ticket for a fleet of boats I used to be engineering manager for in Elaine Bay? Out of 17 engines in the fleet 14 were turbocharged and we were having to service