Got the shaft, still have the clunk

[krewbrew]

I posted this several weeks back and then tried reinforcing the center driveshaft bearing by making a new bushing in place. This car is different than my A6 was. In order to access the bushing and bearing you have to drop the driveshaft bearing housing, as it is supported by the same bolts that hold up the heat shield. I did this, made the gasket out of 3M window weld, and put it all back in place. Apparently the driveshaft did not like being hung from the two ends. A day later I started getting a horrible vibration over 45 mph. I assumed center bearing failure and ordered one from 034. Given what I have read about replacing the center bearing I decided to have a mechanic do it. When the mechanic disassembled it he found that the CV joint inside the driveshaft had cracked. I ordered a used driveshaft from Shokan, had it put in, and the vibration was gone.

But, the clunk remains. It mostly sounds like it is coming from the transmission area, although sometimes it sounds like it is from the front left or back right. It only occurs when in gear and rolling with little torque applied or when rolling and not in gear. It does not occur during acceleration or engine breaking. Any ideas or suggestion would be appreciated. I checked the transmission/front diff oil level today and it is full. I plan to change it anyway and order Redline MT90.

I have been trying to figure out a random clunking noise. It is intermittent and seems to vary from place to place in the car. It has been going on for about 6 weeks. I did a bit of planned maintenance - installed 034 street density motor mounts and snub mount and replaced front breaks. I wondered if either would have an impact, but they have not. The noise is getting worse and now varies between the front and back of the car. Control arms seem fine, and the varying location of the noise has caused me to rule them out. I never feel it in the shifter, I just hear it. It doesn't happen on acceleration or deceleration, it happens mostly when rolling in gear. I believe it is the drive shaft and have been researching this. Found a few pertinent links:

http://www.audizine.com/forum/showth...-3M-Windo-Weld

http://forums.quattroworld.com/allroad/msgs/96161.phtml

http://www.audiworld.com/forums/s4-r...te-up-2752084/

http://www.blauparts.com/audi/audi_d....shtml#trouble

I plan to try the approach in the first link to reinforce the center bushing that holds the rear drive shaft in place. Any thoughts or advice on the issue or approach?

Thanks,
Kevin

[Mindstorm20]

Have you checked your 034 RSB and end links? I noticed after a couple of weeks of installing my 034 RSB and end links that I have a clunk noise that happens in the situations and random locations you described. It's the only thing I can think of causing it but I haven't bothered checking as it hasn't gotten to me yet. I know I installed the bar and links with the car jacked up instead of ramps so there might be some binding or something. Just a thought.

[krewbrew]

Good thought on rear sway bar. I have checked it and everything looks tight. I have not dropped the exhaust to torque the bolts, but I see them equally sticking through the other side. Stock end links are intact as well.

[oVeRdOsE]

can be simple as the coil spring broke and a part is stuck in the plate.
(got this problem on both of my coil spring)