How do you avoid overloading mechanical engines?

Whoa. Is that your way to debate with anyone who doesn't agree with you?
Instead of suggesting me to open a new thread, you could have said right away that you don't give a d@mn about anything I might suggest, because you know you are right no matter what.
You would have saved me the time from the beginning.
Anyway, now that you have made your position clear, rest assured that I won't bother suggesting you anything else.

But just for the sake of this thread, your question is totally misleading.
I never said that high EGT can ONLY be due to high load.
What I said is that high load MUST generate high EGT, because there's no overfuel/overload to speak of, unless reflected in a higher than normal EGT.

In other words, of course a too high EGT can be due to more than one reason.
But as long as you do NOT have a too high EGT, you are sure that you are NOT overloading an engine.
Which is exactly the same thing that you want to check by spooling it up to WOT and see if it reaches the rated RPM.
Anyway, if you prefer to run the boat at WOT after every trim adjustment, who am I to argue?

I hope CaptPK will not raise objections against my own intellect also when I am agreeing with him, because in this occasion he is correct.
See abstract below from page 50 of the MMDS repair manual.

On second thought, CJ, weren't you possibly thinking of the boost pressure, rather than the EGT?
The aftercooler has nothing to see with the hot side of the turbo, obviously.

Why, how would you qualify it?
Mind, English ain't my mother tongue language, so it's a genuine question.

Thanks leeky, but actually also CaptPK did contribute with useful information, which I appreciated.
I don't mind some occasional "out of line" comments, to use your wording, as long as there are also factual contributions.
Many of us boaters can be a bit grouchy, at times...

Let me put it this way: he said that he isn't here for a "debate".
Well, neither am I.

Yup, but that's only true of CRM engines, with the probes already installed for MMDS displays.
In mechanical engines, there is a cap right before the flange where the exhaust pipe is attached, and that's where a MAN engineer suggested me to fit the probe, whenever I should decide to go for it.

Anyway, I don't think it really matters.
Of course the pre-turbo temp has to be higher, but once you've got a sound baseline for either before or after temperatures through the whole RPM range, at the end of the day it's just a matter of checking the consistency and the lack of spikes.

PS: if you would like to get the whole MMDS manual, just drop me a PM, because it's too big to upload. I already sent it to another couple of forumites.