Is this timing chain too loose? (W123) Video...
 

Guys,

Let me know if the chain is too loose on the sprocket...

Video #3: Timing chain is loose?? Inspection under the valve cover.
http://www.youtube.com/watch?v=QhxIm4zfNZU

Chain stretch is 4 degrees, measured both with timing marks and 2mm valve lift.

Im chasing down some noise I have been writing about here:
http://www.peachparts.com/shopforum/diesel-discussion/261683-how-does-617-95x-chain-tensioner-work-r-r-post2299826.html?posted=1#post2299826

Post #7 has a few more videos for some more background.

dd