Quote:
Originally Posted by Hatterasguy
Run 200k-250k miles on it then yank the valve cover and inspect the guides and check for stretch. MB's inline engines can go almost forever without touching the chain. I have only heard of a small handfull breaking but those seem to be mostly fluke's.
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Does not apply to the single row chain on the M103 engine. Despite their short path and no direction changes, the single row chain wears faster than the double-row chains of the later DOHC engines.