Have you already done the timing cover gaskets ? I hope not because you will need to do it again if you are going to do this job right. The chain rattle is usually the cam adjustment gears and you will need two at 500 each. While you are at it you might as well replace the chain and guides. If you do it yourself you can save up to 20 something hours of labor charges. I am doing mine as we speak. 2 grand in parts and counting so far. FUN
Last edited by Bigrobsbmw; 11-27-2012 at 04:42 PM.