Originally Posted by 1turbofocus
regular every day ware wont change the balance of the engine internal or external balance
Why is that? Basically the way I see it, what happens is you slowly wear away material, so the distribution of mass changes and therefore the pieces (particularly the crank at the bearing locations) arent balanced anymore. Please enlighten me about how changing the distribution of mass doesnt change the harmonics of a rotating assembly, that's a direct calculation right there.
And we all know that a lot of us dont put just everyday wear on the motor, many of us (especially the ones who get a udp) like to get on it a lot.
PS, thanks for getting technical, it's nice to have a worthy conversation around here that isnt based solely on opinion for once.