turbos on top of blowers yes it can be done and is

[Stpndsmnn at aol.com]

Hi

If you look in the pages of turbo magazine for the past year Bob Norwood has 
been developing and tuning on e of the magazines project cars...   It is a v6 
powered blown and turbocharged Mr2...     They have had good success with 
their set-up and have tried various combinations of blower/turbo  just blower  no 
blower etc....

Also,  the detroit Diesel engine company has for many years placed large 
turbos on top of the blowers in their 2 cycle diesel engines.  This can be used 
quite effectively to make more power.  And could even theoretically produce a 
blower overdrive effect where the pressure from the turbo is actually driving 
the blower and putting back some of the power lost from driving the blower.

This will only work with a positive displacement or screw type 
supercharger...  I am not sure what would happen with a centrifugal type or a VW 
g-lader......

Ul;timately I think more power could be gained by using two larger turbos or 
one very large turbo   but the bottom end power will be softer than it would 
probably be with a blower installed...

Matt Kramer