[Special K]

I've got a friend with a metal lathe (he's a machinist by trade), and he thinks that he could make an adapter out of aluminum. Everything would have to be concentric to the gnat's ass, but that's what lathes are good for. The pulley bearings are mounted solid in the mounting bracket, so as long as I can keep everything aligned the stresses to the shaft and bearings should be minimized. The one advantage I can see to using the smog pump pulley to run the A/C compressor (Sanden 508) is the pump pulley diameter compared to the compressor pulley diameter. I haven't done the exact measurements yet, but it looks to be about a 2:1 reduction, which should reduce the hp draw of the compressor and still keep the compressor's operating rpm in the correct range (300 rpm-7000rpm). By using another fan pulley welded to the stock cooling fan pulley to run the compressor you'd be increasing the amount of hp required to operate the compressor, and at a cruising speed (hwy) you'd be exceeding the maximum operating rpm of the compressor (depending on which compressor you're using).