Hi, I'm Mark and I am an old bike addict. My garage has become the home for several lost and wayward bikes over the years, and I just can't seem to learn. Anyway, to make a long story short: stumbling home from the bar this last spring, what to my wondering eyes would appear, but a nearly complete 85 Kawasaki ZN1100. Big motor, shaft drive, a little battered and wrecked, but all there. After some wrangling I got it for a little bit of nothing. I figure it would be a great father's day present for my pappy, who is responsible for my interest in bikes and wrenching (and most of my other bad habits) in the first place. Nearly complete on initial inspection really ended up meaning 'nearly complete but missing some rare-like-chicken-lips parts and they're gonna be spendy.' After a summer of tinkering and sourcing parts from every drunk junkyard owner I could find and of course fleaBay, I'm in a position where it's running and I can do some final assembly and finishing. My question today: the engine cases are a dull gray with darker mottling on them, and I wonder what to use to get them cleaned up. Not necessarily shiny, just presentable. I've used a red scotchbrite with limited success, and thought about 0000 steel wool. Someone even mentioned hydrochloric acid. I have access the full line of chemicals from mothers, 3m, dupont and others, and would like to keep the elbow grease to a minimum and results to a maximum. I know, but hey, I'm fat and lazy. Pics to come once I cough up for a smugmug account.