I have some Strange axles, center section that has some surface rust from laying around in my garage. I need to clean it off. What can I use to clean the rust off these. Also I have a set of aluminum heads that also need to be cleaned up. Can I use wheel cleaner on them.

If you go to the local Home Depot or Lowes, KleenStrip has a product in the paint section called Phosphate Plus. Works great. Is actually a mild acid, and is a paint prep. Would highly recommend it. If you leave it on, it forms a black protective coating. Will remove mild rust.