I am looking at a few classic motor
yachts and many of them have either cats or detroit diesels. One boat has two strongly running, well maintained 12 cyl detroits.
They've proven themselves a great fit for the boat for 40 some odd years. Now I understand the whole idea of not messing with a good thing, but I can't help but wonder if there are some sorts of upgrades that have become available for these thirsty beasts that could be integrated into the existing setup to up the fuel
economy / performance.
Is this even a plausible idea?
You can put fuel
injection or better engine
controls or a new carb or exhaust
on older car engines. So does the same apply with these bigger marine