Can anyone suggest a way,and or product to clean,and polish old worn aluminum engine blocks and covers!!!

 

For the engine case covers and rocker covers, if they've not been touched before, they'll still have factory lacquer on them. Use a good gel type chemical stripper to remove this. Then for polishing, if it's not too bad looking, you can use a simple cream polish like flitz or blue magic. But if there's areas of heavier oxidation, using fine wet-sandpaper may be needed. For me I took my cases off when doing this, stripped the lacquer, then cleaned everything thing up with 600 wet sand paper, then buffed it with a bench polishing wheel. But if you don't want to get into using power buffers, you could use rubbing compounds and work you're way up to polishing compounds. But you really cant beat useing a buffing wheel. I have poeple all the time that swear I have chrome covers, then I have them take a closer look to see that it's really just highly polished aluminum. Also if you want you can spray a new protective coat off lacquer after you polish the cases up for low maintnance, but personally I think they look a bit nicer as just bare aluminum, plus a little wipe down about once a month or so will keep them looking great.

 

What fatboy said. You may also want to look into a dremel tool or something to help you. The fancy buffers can get pricey, but with something small like a dremel you can polish them while still on the bike and they will give you a very nice shine. Alot more rpm's than your fingers can achieve.

 

TRY Mothers polish.

 

Yeah, the Mothers Billet Chrome Polish (relatively Cheap in Walmart) works great...