Heh, yep this is exactly what happened to me, and about 3 other people locally that I have met. The rubberized section of the harmonic balancer decides it doesn't want to hold together any more and breaks apart. Mine did this when it happened:
http://www.ryanmacdonald.com/car/how...y/pulley10.jpg
Cost me about $90 for that replacement cover on the bottom.
I went and bought a Unorthodox racing pulley to replace mine. At the time, the pulley was going to cost me about $170 locally, but UO had them on sale. I got it delivered to my door next day air for $108.
So far I've been happy with it. It does rev quicker, noticible when you sit back in a car without one. However overall speed isn't all that much improved. You will notice however, that your accessories obviously spin slower than usual. This results in a sluggish dry steer, and not as good AC sitting at a stop light. If I had my choice I would still make the same choice, due to the price. However if they were equal in price, I would have bought the OEM.
- Ryan
Btw, if you feel handy I wrote up a how-to on how to remove/replace it on my website:
http://www.ryanmacdonald.com
Just go under Sunfire/SVX then SVX how-to's.