[Vwdiesel] Turbo in series or parallel

[Shirley, Mark R]

The blower on the turbo jobs was still used for scavenge.  The exhaust valve
closed, and the turbos boosted the charge.  GRANTED, on a highly boosted engine,
the supercharger won't work near as hard... :)
They used the supercharged GMC's on the brand of tractors I'm somewhat in love with,
Olivers, so I did take some time to familiarize myself with them.

> -----Original Message-----
> From: James Hansen [mailto:jhsg at sasktel.net]
> Sent: Wednesday, January 28, 2004 9:40 PM
> To: VW-Diesel List
> Subject: RE: [Vwdiesel] Turbo in series or parallel
> 
> 
> I agree to a point Mark.  If it was just scavenging, then why have an
> 8V92TT, or "twin turbo" version.  Used the famous blower 
> mounted on the
> wedge of the V, and a turbo on each bank of four.  As I 
> recall, there was a
> staged version as well.  Good for 500hp. The more turbos, the 
> more power
> thte engine was rated at.  It couldn't all be for scavenging, 
> could it?
> -James
> 
> > -----Original Message-----
> > From: vwdiesel-bounces at vwfans.com 
> [mailto:vwdiesel-bounces at vwfans.com]On
> > Behalf Of Shirley, Mark R
> > Sent: Wednesday, January 28, 2004 9:40 AM
> > To: Sandy Cameron; vwdiesel at vwfans.com
> > Subject: RE: [Vwdiesel] Turbo in series or parallel
> > 
> > 
> > The GMC two strokes use the supercharger for scavenging, not boost.
> > BIIIIIG difference.
> > 
> > > -----Original Message-----
> > > From: Sandy Cameron [mailto:scameron at compmore.net]
> > > Sent: Wednesday, January 28, 2004 10:30 AM
> > > To: Shirley, Mark R; vwdiesel at vwfans.com
> > > Subject: RE: [Vwdiesel] Turbo in series or parallel
> > > 
> > > 
> > > At 10:24 AM 1/28/04 -0500, you wrote:
> > > >
> > > >Superchargers are not terribly practical on small diesels.  
> > > 
> > > Except on the GM 71 series 2-strokes ;^)  kind of essential  :^))
> > > 
> > > Sandy 
> > > 
> > > 
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