Ok to install new head?
My cousin left me 2002 2.3l with 225000 miles. The engine makes a loud knocking noise after it's warmed up. I thought it was a rod, but now I find that the knock was diagnosed by the dealership as coming from the head. I have a newer used head from an '09 and am about to put it in, but... I am told that you can't just swap duratec heads unless they were milled in the same batch.
Do any of you know if that is true? I want to get this job done but don't want to pull the head and find it doesn't match the one I'm putting on.