Re: Rotax 912 uls 100 HP TBO
I sure haven't heard that in the 3 Rotax courses I have attended. In fact at Sebring the instructor,Dean Vogel, told us that the engines showed almost no wear when disassembled at TBO and could probably go longer prior to overhaul.
Of course ,as with all engines, it depends on how long they sit,are treated,maint,etc.
But, I have also heard,as you, (from another source) that the 80 is the better of the two. This I would imagine ,if true, would be because of the lower compression.
In any case,opinions are like a------s.everyone has one.
The 912's have a good track record, I wouldn't worry too much about it