How about using the gear drive and pulley off a vortech supercharger? See
http://vortechsuperchargers.com/cate...=SUPERCHARGERS
You'd need to fabricate and attach some sort of a turbine (or whatever meets your needs) instead of a compressor section. This also gives you the option of changing pulley sizes for different shaft speeds.
I'm also curious how you're going to get much energy out of 220 degree gasses? Is that in degrees C or F? Exhaust gas temp under typical freeway cruising conditions usually run around 720 to 820*C, so either way you're trying to use a cool, low energy gas.
91CavGT 
Hybrid Mode
