Quote:
Originally Posted by MDM
This all has me extremely worried, in that the N63 and the S63 engines are "similar" in design. I really hope this doesn't affect the S63 in my 2013 M5 in the future!?....
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I think the S63 already incorporated most of the changed hardware.
Remember they are only changing many of the parts on the cars if they are of the outdated version (Index)
Example: Only injectors older than Index 11 will be changed. Ifa car has some index 10 and some Index 11 injectors, only the the index 10 ones will be swapped out.
Same with some of the other parts.
The S63 uses the N63TU timing chain, which I believe is far less likely to "stretch" than the one from the N63.
For the timing chain the dealer runs a test program and the diagnostic system determines if a new chain is requires.
There are also thousands of later production N63TU engines that are not affected by this service action at all, just like I suspect most S63