Re: TurboCharging a Normally Aspirated Marine Diesel (Albin AD-2)
I think the key to successful turbocharging in practical terms will be careful heat management. There will be a lot more heat to deal with.
From what I have just read, the Simms pumps have fixed timing, albeit more advanced than many, which may limit your options. Increased fuel could be arranged by fitting larger injectors at the possible cost of over fueling when not on boost.
If you are going to be building from scratch, do you really want to run what is essentially an experimental setup on a new boat with all that involves?
Have a hunt around to see if there is already a turbocharged version of your engine. If there isnt, there will be a good reason why.
Most turbodiesels fall into the category of being relatively high speed engines. I dont think a 500lb 20HP is one of those.
There is nothing quite as permanent as a good temporary repair.