For a 13brew there are a-b-c-d-e stamped rotors, right. Are these interchange able or not?

I have heard some say that they are matched by weight and some telling me it is different casting by different manufactors, which I could see having different weight. I have a couple of different letter stamps but no matched pairs. What can I do? Did some of the archive get deleted?? the search engine doesn't seem to pull info like it used to?

I have a good A-B-C stamped rotors on the bench.

 

I think the rule is keep them at within two letters, I always have my stuffed balanced so I never worry about it.

 

What is the process used to balance?? Static(weight) or are the balanced in rotation??

 

Yes and yes, I give the guy $275 and all my rotating parts from the clutch to the front pulley and beyond that I can't tell you much about the process. Usually there are extra holes drilled in the counter weights and sometimes heavy metal is added in some places.

 

Paying some one to balance my rotating assembly is out of the question right now, I need to put the motor together by next week end so I can go home. So you say within 2 letters is good. thats bout what I have heard.

So what is the difference between the stamp numbers??