Martin has a VW diesel engine, which is an inline overhead cam engine.
It uses a timing belt but VW wbx engines don't. The wbx engine is a
push-rod engine and the cam is adjacent to the crankshaft and driven by
a timing gear on the crank. No timing belt or chain, just gears that mesh.

Mark

Dave Mcneely wrote:
> so, another dumb question:  Is replacing the timing belt something that I need to do at some particular mileage on my 2.1 waterboxer?  Or are there symptoms that I would notice and go from there?   It has about 50K miles on a rebuild according to paperwork the previous owner provided to me.
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> mcneely
>