- Jan 15, 2008
The big end with the aluminium shell lining bonded to it can be cleaned using Hydrochloric acid, this will remove the shell lining but leave the steel big end untouched. Done it a few times to recover cranks in Briggs engines. Also called muriatic acid and concrete cleaner. You drip it on and it will fizzle, carry on dripping it on until the aluminium is all gone.