Mann D2840LE403 1050 HP engines question

[motoryacht lover]

I am not going to defend MAN, only sharing my direct experience. I have not experienced any breakdowns in 9 years of ownership. The boat is run a fair amount. I had to buy an intercooler and the cooler alone was 8000. Probably will need the fuel pumps rebuilt in the next year or two and am told that will be 15,000 each. Going from memory displacement is around 1100 cubic inches, with 820hps the ratio is pretty good. In other words the 820s are not highly stressed. My pyro temp at cruise is around 700f. My cylinders were borscoped at around 1500 hrs and was told that they all still showed cross hatching. I don't have temperature creep like my old 375hp 6v71s. All of that being said I would prefer cats in my next boat but wouldn't run away from the right mans or mtus.