WELL, race engines're always gonna blow sometime.

If it ain't broke, don't fix it is the maxim for most amateur racers, which covers most of the field.

The TT is extreme in its maximum speed demands, and is surely the only place apart from LeMans and Thruxton-style endurance meetings, where engineering is subjected to such punishment, for so long.

I do not quite understand what Tony Scott expects the organisers to do, however. Maybe his quotation was taken a wee bit out of context and abridged when repeated here?

For myself, I fully understand the risks of doing a few races on one engine without rebuilding and changing highly stressed components.
I also happily climb aboard old ( and new ) aeroplanes which have just flown thousands of miles without rebuilding of their engines........

Guess when they blow, they blow; usually your'e the last one to know.