Luke M
XS400 Enthusiast
For cleaning off the rust, use SOS pads and soapy water- will take surface rust and rust stains off. Then use a chrome polish for the final polish and the rust will stay away.
As for the engine, I scrubbed it with Simple Green to get the ick off (and carb cleaner...I had a leak or two), the scrubbed with a brass brush on the jugs, it gave a decent "brushed" finish. On the side covers, I started with 400, then 800, then polish. I have a nice satin finish. If I wanted high polish, I would progress up to 2000, then polish if I was hand polishing.
That turned out fantastic, gives me motivation!