Quote:
Originally Posted by Stretch
The camshafts are identified at the far end with numbers - these numbers are referenced in the FSM
Oversized variations are meant to exist but I've not seen them for sale before - perhaps Mercedes has a pile of them somewhere (!)
The book (FSM) says to change the camshaft and rocker arms as a set
There is a difference between the non turbo and turbo OM617 camshafts - the turbo has higher lift - there's also a difference between the early and late non turbo OM617 camshafts - the non turbo got more of the turbo "tweaks" (Sorry I can't remember exactly what all the tweaks were - there's an OM617 development publication out there floating about in what bell ends now refer to as the cloud which is real anorak reading material)
The most wear at the top end of the OM617 is usually in the spindles for the rocker arms - these longitudinal spindles often have nasty gouges / wear marks but they are fairly cheap to replace.
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As asked and mentioned already => Why do you need to replace what you've already got?
If you are falling into the trap of thinking "new is better than old" - STOP - think again!
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Can't remember the details but there is a difference in the hardening of the Camshafts and the pads on rocker arms in the later models.
People with experience rebuilding Gasoline Engines especially from US Cars are used to the availability of an extensive number of parts for rebuilding as well as an industry that regrinds crankshafts, Camshafts and can supply oversized and undersized bearings. Somewhat the same with US made Diesel Truck Engines.
So you have a mindset on what you can put into an engine or reuse and still consider to be a rebuilt Engine.