I agree with dbow on that one. Engines do see a very high amount of stress at high RPMS like that.

IF you calculate the momentum of the reciprocating parts at 35K RPM..its mind boggling!!
35000RPM= 70,000 UP/DOWN strokes per minute
That means that the engine 's con rod changes direction by 180* 1150 times PER SECOND!! (70000/60) Correct?

Thats an insane amount of momentum generated by that little piece of metal and what it lacks in weight is made up in speed!
I can definitely see a conrod shattering due to stress!!
Piston/Sleeve replacement is only part of the story.

If you can hook me up with some technical whitepapers about this please PM me! I'm wondering what real world numbers look like!

Thanks,
-ram