Turbo Bypass

[Zack]

Jason,

It's not a drop in boost through the intercooler, it's a drop in 
boost at the outlet of the compressor.  The cooling effect of the 
intercooler greatly increases the density of the air going into the 
engine, and thus increases the mass air flow capacity of the engine.  
To reach the same boost level compressor flow capacity must be 
correspondingly increased, either with a larger compressor or by 
spinning the same compressor faster.
	The effect is a lot more noticeable on supercharger equipped cars 
than on turbo's, since the supercharger compressor turns at a fixed 
rate relative to the crankshaft.  On a turbo the increased flow 
capability of the engine results in a correspondingly increased 
exhaust flow through the turbine, which spins the turbo faster and 
partially compensates.

Zack

> ECMnut at aol.com wrote:
> 
> > In a message dated 8/21/98 10:55:03 PM Eastern Daylight Time,
> > bearbvd at sni.net
> > writes:
> >
> > > You bet. an intercooler with a Vortech would work just fine. Just
> > don't
> > >  forget to correct the pulley ratio for the higher mass flow you're
> > going to
> > >  see through the engine if intercooled at the same boost.
> > (otherwise, you'll
> > >  lose some boost)
> > >   Regards, Greg
> > >
> > Greg, I was trying to explain that to someone on the Syphoon
> >  list a while ago, and they siad I was out to lunch...
> > That may be true, but Is there a formula or someting
> > for calculatinge the additional flow needed for intercooled vs. non
> > IC?
> 
> If the intercooler doesnt create a pressure drop or act as a flow
> restriction why would you experience a boost drop through the
> intercooler?
> 
> --
> Jason Weir
> 88 Wrangler - 258 Chevy TBI
> Fayetteville, North Carolina
> home.att.net/~jweir/tbi.inject.htm  --- TBI Installation Page
> mailto:jweir at worldnet.att.net
> 
> 
>