question for frien, which rotor???
 

my friend is rebuildng his engine and he has everything apart and cleaned but now he is not able to tell which rotor is which, any help would be appreciated and thanks for all of the previous help.

You need to PM Kevin Landers or Mr Gadget, they're the builders....I can't remember, lol...Something to do with the markings on a particular side compared to the gear side, or something like that...

thanks I will.