I noticed when I removed my stock flywheel on my 87TII that it is an unbalanced unit. I'm assuming this is to balance out the 2 rotors, since it takes a rotor three rotations to complete it's full cycle around the housing. Am I right about this?

Are there any tricks to putting it back on and getting it balanced right? I wouldn't want to match it with a rotor and shake my engine to hell.

Also I'm assuming that if I were right about this, that 3 rotor cars would have to have a balanced flywheel?

 

They ARE balanced. It's an internally balanced, keyed flywheel. It should only go on one way.

 

Also it must match the proper front counterweight.