Thank you all for you replies so far.
I figured it out the fins ar rubbing some shield that surrouds the fan. As the fan spins it rubbs the bottom of that shield, resulting in that high pitched rurrrrrrrrr noise. I don't know how this shield, which is attached to the radiator has moved, but it looks like the radiator hasn't. The fan hit is so hard that sheild poped out of one of its placements.
I believe it is one of the following reasons:
1. My motor is running free - missin, loose or broken motor mount. Can this happen?
2. My radiator has some how inched it way up.
3. When my radiator was installed it was done incorrectly.
4. My car went air born one day in downtown Decatur going through an intersection. I went over a BIG bump like this _/\_ <-my car, which I didn't see and forgot was there because it was raining. There really should be more restriction on how these streets and intersections are made.
If I only had a digital camera I could take some pics. I'll see if I can find some ebay pictures to explain it better.
Mad E30 lover