can a zzSE run a perfection king 4.2?
 

can a zzse run a 4.2? my old zz(rx8) can't run one. its not powerful enough. i dunno what to do with my other 4.2.

Yes, but there is no noticable speed difference from the 28k motor, but a big loss in torque.

so a 3.4 will be faster in a zip?

no basicly anything above a 28k goes really really slow like 10k

I've gotten extremely good performance with my NX 3.4 motor (torque+speed)