being new to detailed turbo talk and without sounding dumb, what do these numbers refer to when talking about a turbo?? 57/65/14

 

57= 57mm diameter inducer(the blades you see without taking the compressor housing off) on the impeller

65= 65mm diameter on the exducer(i believe its called, or maybe i just made it up, it sounds good at least haha) on the impeller/compressor wheel.

and 14 being the cm^2 of the turbo chargers exhaust housing.

hope this helps ya.