Finished Sump

Finished cleaning and polishing the sump. It's a long way from perfect but miles better than when I started and more than good enough to go back on the engine. Like the rocker cover, the casting or welding (however it's made) is full of imperfections so it's never going to have a chrome like mirror finish but it definitely needs to stay as bare metal and not be painted

 

I used a combination of drill mounted wire brushes (too harsh), wet and dry and the buffed it with the dremel and some autosol polish. I'd never normally use a wire brush on ali but it was so oxidised anyway the damage was already done

Done