factory drilled 2 piece rotors?
 

What is with the holes in these 69 Z rotors? balancing? service replacements?

https://www.yenko.net/ubbthreads/pics...2575-rotor.jpg

Re: factory drilled 2 piece rotors?
 

Balancing. I have seen various numbers of holes.

Re: factory drilled 2 piece rotors?
 

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Lynn</div><div class="ubbcode-body">Balancing. I have seen various numbers of holes. </div></div>

As installed from Norwood &amp; LOS? Thanks Lynn.

Re: factory drilled 2 piece rotors?
 

As manufactured and supplied to the plant.

Re: factory drilled 2 piece rotors?
 

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Kurt S</div><div class="ubbcode-body">As manufactured and supplied to the plant. </div></div>

So was it pretty random occurence Kurt, or a &quot;during a certain month of the year&quot; kind-of-thing at both plants?

Re: factory drilled 2 piece rotors?
 

Just as needed to balance the rotors. Mine have at least 4 holes.

Re: factory drilled 2 piece rotors?
 

Thanks Kurt.