Thanks for the replies, Its the M57 engine, I don't have it fully stripped down yet however, 1 of the exhaust camshaft bearing caps & 6 rockers are broken, I removed both camshafts & performed a cylinder leak down test, amazingly every cylinder holds pressure!! I'm still going to remove the cylinder ...

Good evening all,

I'm from Carnoustie Scotland, Ive just bought a 2009 project E70, the upper timing chain has snapped so im sure to be asking lots of questions on the way

Cheers
Gary