We have a small page on turbo bleeds - a very inexpensive way to greatly enhance the power of the turbocharger. In addition, for those troubleshooting their systems, we have a page on turbo boost spiking and boost creep. There are several different 2.2 blocks. The oil pump is mounted internally. Turbo blocks weigh about 90 lb.
Pistons are aluminum with steel struts, and rings are iron.
2.2 liter engines are all noninterference designs, so they generally are not damaged when the timing belt breaks. Turbo III owners generally know this from experience. It's seems possible that T2s, with floating wrist pins, might suffer less than the others from wrist pin noise. My Shelby Z has over 143K miles on it and has been making the clacking sound for some time now. However it is not as loud as I've heard in many T1s.