At one time, Detroit Diesel (still may?) turbocharged through a roost style blower on its 8-71.
The compressed charge from the turbo will heat up the blower enough to change the housing/rotor clearances. To allow for this, you will have to increase the clearances which will reduce the...
Com-Ten makes the most economical force measurement system that I'm aware of; it's their Stand-Alone digital force meter, and I think it was around $1600. Theur website is www.com-ten.com