Large pieces probably won't pass through the cooling system passages. The main concern would be blocking the flow to some part of the cylinder head. Have you done a search, here, at bimmerfest, and bimmerforums? I can't imagine this is the first time this has happened to someone.
“The test of the machine is the satisfaction it gives you. There isn't any other test. If the machine produces tranquility it's right. If it disturbs you it's wrong until either the machine or your mind is changed.”
Originally Posted by Mike Miller
I just don't know what I'd do with 560 hp that doesn't involve getting arrested.