View Single Post
  #40   Report Post  
posted to rec.boats
Wayne.B Wayne.B is offline
external usenet poster
 
First recorded activity by BoatBanter: Jan 2007
Posts: 2,536
Default Detroit 353 diesel -- aluminum block? How to tell?

On Wed, 22 Aug 2007 14:01:49 -0500, lid wrote:

The "blower" just provides the normal air pressure required to run the
engine (other 2 stroke designs do the same thing with crankcase
vacuum/pressure). But a "supercharger" would provide more than that.
An extra (super) boost so to speak. Thus the use of separate
terminology. Izat about right?


Almost. Superchargers and turbochargers both generate boost pressure,
the difference is in how they are driven. Superchargers are direct
drive (belts, gears, etc), turbos are driven by exhaust pressure.