re. Audi 200 cam,crank and h20 pump pulley teeth profiles...

[Swann, Benjamin R. (BSWANN)]

<snipage..
The engine builder showed me some problems with the teeth of the timing
gear on the front of the engine. The new camshaft pulley I bought from
Audi/VW and the crank pulley (from a PR engine) have the same flat
square teeth, but the water pump pulley has the peaky, roundish kind of
teeth. The engine builder said I should replace the cam and crank pulley
to match the water pump as those teeth will handle more torque.

As far as I know Audi replaced the round toothed units with square
toothed units and called the belt "super-torque". I am more in favour of
pulling the pulley from the water pump and fitting the pulley from the
old water pump.

The question is whether I need to remove the entire water pump to remove
and install the pulley without damage to the pump shaft? Removing is
obviously with a gear pulley, but installation is going to be by block
and hammer, so do I need to support the internals while hammering?

Look at the pics and tell me which ones are correct.

cam pulley: http://64.176.6.234/images/engine-002.jpg
crank pulley: http://64.176.6.234/images/engine-004.jpg
h2o pump pulley: http://64.176.6.234/images/engine-003.jpg

..snippage>

looks like you should be using the earlier style 'square toothed' water
pump.  Should be easy enough to replace while the engine is in the plastic
bucket, and our favorite parts suppliers carry the pump for under $40.