[Vwdiesel] Camshafts ---- ( missing key mystery )

[Nate Wall]

I recently came accross this Hybrid electric vehicle
web page where a novice was making a diesel electric
hybrid. He got an old VW diesel motor from the salvage
yard and one of his comments was something like "The
previous mechanic forgot to replace the woodruff key
that locks the cam to its drive gear" I see how he
could think that with the key slot in the cam and no
key!

--Nate
--- LBaird119 at aol.com wrote:
>   I'd expect the slot is what would be used for
> locating the cam.  It'd 
> be a bit tougher to locate to a half moon slot.  My
> speculation is that 
> it still has to do with the blanks but it's part of
> the roughing process 
> and it's simpler to let them all get keyed along
> with the gas cams.  I 
> forget exactly how it's all done but as I recall, a
> cam grinder only is 
> indexed on a lobe and then follows the cam pattern
> and then indexes 
> it's way to the rest of the same lobes then the
> other (intake or exhaust) 
> pattern goes in and the remainging lobes are ground.
>  Most cranks are 
> ground similarly.  That's why blueprinting a crank
> is possible.  They're 
> only ground so  close instead of exact indexing.
>     Loren
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