I sent the engine block to mechanise milling IMS hole opening it up to take the new 62mm IMS. It`s looks great!
Under my point of view I don’t see milling the whole with the engine in place at the car as several companies sell, perform or rent, As I see it no matter how careful you are it will always come in a lot off metal shavings in the engine who will go around whole oil cirquit damaging the engine.
