Corroded Motorcycle engine(s)!

[tmboracles]

Someone had used a caustic solution of some kind, on our motorcycle engines. The result is the anodizing was ruined and now the engine cases are corroded, I think. What can be done to rectify this? I've viewed some threads on polishing engine cases, however, would they stay looking good, or would they require some further protection?
How does one get inside the deep crevices?

[baz]

yes caustic solutions will remove anodize ,it will also damage the aluminium , the extent of the damage depends on the strentgh of the solution and the time it was left on the part . you have diffrent ways of fixing it . you can polish the cases (yes they need either a protection or you will have to repolish them )
you can also glassbead them and have them powdercoated a solid color or
polish them then powdercoat over the polishing with any candy top coat colors