there is NO WAAAAY… ANY manufacturer runs all their engines in the manufacturing environment on a load of any kind for more than 10 minutes to 1 hr.
let alone the minimum 10 hrs that it would properly take.
lets not kid ourselves as to how much that would actually cost.
there will never be an engine manufactured that
will not need a break in period.
as simply put even if you could machine it perfectly to within 0.0001
the “seating” forces of a rotating mass at these automotive kind of rpm’s
are so strong that the scoaring would still take affect.
P.S.
an engine machined to be accurate to itself at those accuracy’s would be arround 1 million dollars these days.
as this is 10 times more accurate than todays standards and also…
this would need to be a matched and blueprinted engine…
this means that all parts are machined to go in 1 engine not any engine.
this was first attempted by honda with the SPOON series of engines.
and was apparently like a $15,000 option…
^^is this "spoon $ amount correct?..i dunno for sure