Correct, it is bolted on solidly, just has bit of play... I will post up some photos tonight of the condition of the head and pistons so people can advise on the route fwd, everything was the same colour (misfire in Cylinder was the issue) and there is a tiny bit of one of the exhaust valves missing, so at least I have found the problem it would seem!
It is an Autolusso engine, put in in 2009. Receipt just says a reconditioned engine from a 147...
Now - if I was to rebuilt the head myself, do you have to get it skimmed (I thought you always did with an alloy head?) - if so, I assume everything has to come off (cams, valves etc)?
I know a good injector specialist - injectortune - used him for the injectors on the E30 and it made a real difference - worth getting those done?
I would be interested to know which engine this is, give me a call and we can help you as well