Seems a conservatively designed engine should be able to be "turned up" as that allows a wide range of
applications, i.e. continuous duty in a mine or ship. Look at what Cat did to the 3208, more than doubled the hp from 210 to
450 in marine applications. My understanding is that just pushing more fuel or just pushing more air doesn't get you very far, other than smoke,
vs. feeding the engine an ideal balance for its load and rpm. Which since I'm not a decent mechanic is all a bit of voodoo and witchcraft to me.
But I do know that if I ever get a miniature diesel engine to run my pencil sharpener, it will need to be common rail...and run on vegetable oil so it smells like
popcorn. Wouldn't that be a hoot to have on your desk.
I think turbocharging diesels is a natural, no pun intended, almost all of them are heavy duty enough to withstand some more stress/pressure. And from what I have read, they actually
get more fuel efficient when more air is added, I suppose to a point. As others have said, it's all about preventing them from
overheating. Change the oil and keep them typically under 200 degrees and most of our diesels will outlast us, the owners. Which is the way it should be.
And feed them clean fuel, which is always a challenge.
Those New Gen JD's were tough tractors, you look at one and just know it was built to be handed down from father to son.