http://www.grandprixforums.net/threa...-five-gen-5%29
From Eaton:
The 90-cubic inch Gen Vsupercharger is very compact. Its housing includes the throttle-body adaptor, crankcase ventilation plumbing,
coolant passages, the evaporative emissions purge valve and the rotor
drive mechanism. The drive mechanism is sealed and permanently
lubricated, obviating the need for oil connections and eliminating a
potential source of leaks. Moreover, the Gen Vfeatures all-cast
components and a larger, low-restriction outlet port. The tuned inlet
port is also less restrictive, compared to previous-generation
superchargers, allowing a larger (75 millimeter) throttle body. As a
result, more air is pumped by the supercharger through the Series III’s
induction system. The Gen V’s rotor is finished with Abraidbable Powder
Coating (APC) rather than epoxy. APC is a patented material containing
graphite that is electrostatically applied to the rotor and baked on. As
a result, the rotor requires less clearance within the supercharger
housing, resulting in less leakage around its edges, greater airflow at
a given operating speed and lower operating temperature. The Gen V’s
rotor bearings have been enlarged to increase durability and reduce
operating noise and vibration.
As a result, the Gen Voperates at considerably higher efficiency than
its predecessors. At wide open throttle, the Gen Vturns at 700 fewer
rpm (a 9 percent reduction), draws 13 percent less power from the
crankshaft, decreases operating temperature 15 percent and increases
volumetric efficiency 9 percent. For the customer, that means a 9
percent increase in horsepower (see product specifications), and best-
in-class acceleration times for the Grand Prix.
