[s-cars] Crank pulley failure pics

[Igor Kessel]

Robert Myers wrote:
> Hi Y'all,
> 
> After the crank pulley problem has once again reared its ugly head I 
> have put some pics of my failed crank timing belt pulley with its 
> missing "key".  Kinda hard to see but the key, which is an integral 
> part of the casting and is not what we normally think of as a key, 
> simply broke off.
> 
> http://chips-ur-s.com/crankpulley.html
> 
> 
> Bob
> urS6 for sale: http://chips-ur-s.com/S6.html

I have just received a new pulley. This thing is made out of some kind 
of light metal alloy, and the "key" is in fact a tiny unconvincing 
dimple, maybe 8x6 mm, cast from the same flimsy unconvincing alloy. And 
that wimpy thingy is supposed to sustain years and years of shearing 
torque applied to it by a turbocharged interference engine? Gimme a 
break! Why that rocket scientist from Ingolstadt would not put a grove 
in it and specify a Woodruff key machined of some real hardened steel is 
beyond my comprehension.

-- 
Igor Kessel
two turbo quattros