Mr Joe's Boat Worx installed 2 Timray TMD#@di engines in our boat, both packed in due to an marinisation construction error, with proof of 4 survey reports from different surveyors he refuses guarantee and excuses me a professional marine engineer of mis handling those engines. When these engines where opened the surveyors found loads of problems questioning if they would ever have made 200 hours, so be careful. An other boat had the same problems but due to be informed by me they could save the engine from a total disaster. :devilParts are available on the Timray website: Timray Scheepsdiesel motoren - scheepsdiesels - scheepsmotoren - scheepsmotor
They are also available through Joe's Boat Worx out of Curacao: https://sites.google.com/site/joesboatworx/
That sounds fantastic.My advice to you is the same I would give to any DIY capable person out there, and I will do this very thing if I ever need to repower.
Get a kubota engine.
Find the right size, used, and buy it. Rebuild the fuel system.
Use a dry exhaust, and a keel cooler. You now have the most reliable, maintenance free, marine diesel in the world.
You have eliminated the biggest problems with marine engines, that is cooling and exhaust. The exhaust will need a ceramic coating, inside and out, and then wrapped with thick heat proof insulation.
The keel cooler will keep the cooling water flow issues away. It will also remove a thruhull from the equation.
Using this combo, with a keel cooler for the air conditioning, you could have 0 thru hulls on the boat, and have nothing to worry about beyond the packing gland.