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I was wondering if there were any DIY's concerning the Timing Chain and guides on the R53 W11 engine. Everywhere I looked it only mentions the tensioner or the R56 MCS. Is this something that can be done with the engine in the car? Thanks.
Coolio, Good luck! If you're replacing the chain don't worry about the official tools since you can set the timing with the timing marks on the crank and the cam sprockets. It's all pretty straight forward. once you're in there.
Oh I will, so its pretty much remove the Harmonic balancer, oil pan, valve cover, camshaft sproket?
Also need to remove the AC compressor from its mounts (no need to disconnect any lines or anything), remove the serpentine belt tensioner and the idler pulley, and that's it. It does make it a little easier to remove the caps on the head that give you easy access to the timing chain guide bolts.
Oh yeah, need to remove the passenger side engine mount as well.