650 - getting it running part 10: making it shine
There is nothing as sexy as a vintage bike shining brighter than when it was new. When I first bought the bike I spent a long time polishing the aluminum engine cases with a polishing wheel and buffing compound. This was a lot of work but the results were pretty good.
Unfortunately my nice and shiney right hand case got cracked when the wind blew over my bike. My left hand case got nasty looking from 5 years of neglect. WIth one neglecected engine case, and one very very neglected engine case off the donor motor, I was back to square one for polishing.
Needless to say, I was not going to put in that kind of time again polishing the cases for hours and hours. This time I got drastic. I got sandpaper. I started with 600 grit sandpaper, then moved to dremel wire brush for detail work. I next used 2000 grit sandpaper. Next I used various buffing compounds until the cases shined like new. Well, pretty close to new. There are still plenty of imperfections in that soft aluminum case, thats how you know its 30 years old :)