So, it's not really black magic or any thing.
TTY bolts only have one advantage, consistent clamping force on the assembly line, attained by taking advantage of the elastic and or plastic deformation found on the stress strain curve for the fastener.
There is no other magic.
Manufacturers commonly state reuse intervals (one or two) or stretch limits on TTY bolts.
The question is how far does the fastener get pushed along the the flat plastic part of the stress and strain curve each time the fastener is used?
In this case, 10 measured applications of the fastener have yielded (pun intended ) zero deformation and a consistent torque.
So if it works ten times, surely a second round for me is ok.
I understand that reusing parts to save money, might COST money, but at the same time why spend money until you understand why you need to?
Like I'm sure there is no Jaguar approved manual that says, yeah, put your old rings on used pistons, dingle ball it and go.... :).
But we know we can, because we can visualize the dimensions, and the forces.
The mechanics of the fastener just requires a longer pause for thought.
Ill be considering each fastener individually, too.
Or maybe I won't and I'll drop $500 on hardware, lol....
The problem with not using TTY and replacing with traditional hardware is figuring out what static ammount of twist to apply to get the original designed clamping force. Also not impossible.