Quote Originally Posted by Trip59 View Post
Did you do anything special to prep before welding? I've got my 59 ironhead sitting in crates till I get geared up to repair the cases (also waiting till I have a mill in the shop...) but old, grease soaked castings give me a bit of pause.
I was fortunate enough to have this happen while the cases were clean enough to eat off of, when I reassemble a rebuilt part, it's surgically clean, but to be safe, I cleaned everything with chlorinated brake cleaner, followed by acetone, followed by hot, soapy, then hot clear water. (remember the phosgene warning). I was limited by accesibility to form any deep vee's or anything, so I made sure to have enough amps to get good penetration.