Nagging tick

["'*Tess*' Teresa A McMillan" <tessmc@u.washington.edu>]

I have been hearing a loud click from my girlfriend's '88  80 Q 5cyl
engine.  It sounds like a valve.  I'm not too familiar with Audis however 
quite familiar with cars in general. 

Here are some specific questions that I (and she) would appreciate any help
with.

Does this car have hydraulic lifters?

What is the general configuration of the valve train?

Are the valves in a single line or are they alternated to achieve a
hemispherical combustion chamber?

If in a single line are they under the cam shaft, or do they use a rocker arm
technique?

What mechanism is used to adjust the valve, an Italian (Volkswagen?)  shim type,
or set-screw/lock-nut like the Japanese and most others?

Does the cam have to come out (like an Alfa), or are any unobtainable tools
required (like a Fiat)?

If any one has any tips about valve adjustments if possible, any info would be
appreciated.  By my girlfriend's recollection, the last time she 
experienced this kind of sound and drove around on it, the camshaft had 
to be pulled and re-tooled to repair cracks and other damage.  So she's 
eager to get something done on it before there is any permanent scar to 
the engine.  

I'm just trying to dig up info.

Thank you,


Daniel R.  Przybylski

danp@scs.philips.com

1969 Alfa Romeo 1750 Spider Veloce 
1977 Fiat 128 Sedan (2-door)

Alfa Romeo Association 
Rear Engine Fiat Club 
Fiat America