[s-cars] Bypass Valves and Pressure Losses (Uh, Pizzo??)

[Joseph Pizzimenti]

http://www.decaf.com/switch/



--- "Lewis, Gary M" <gary.m.lewis2 at boeing.com> wrote:
> I'm having a F'n morning...
> 
> Godda#it, now I gotta go home at lunch, look at the
> F'n directions, look at the F'n valve, and write
> another F'n email.
> 
> I'll report back with either a) stupidity (I wrote
> the wrong thing) or b) stupidity (I installed the
> damn thing incorrectly), or c) I put a hit out on
> you for making me drive all the way home.
> 
> Off topic, I was gonna drive home anyway, as I
> forgot the F'n caliper brackets in the F'n garage
> this morning, and I have some lift time scheduled. 
> I also have some nice Primitivo (Eyetalian
> Zinfandel, a close cousin) grapes fermenting that
> should have tha cap punched down.  Nice, 28 brix,
> perfect p.H., a Tuscan wet dream.  Delish.  And the
> wagon can hold ~500lbs of grapes easy.  Fastest
> agricultural vehicle in the world...
> 
> Bitc# bitc# bitc#...
> 
> Thanks Joe,
> 
> Gary Lewis
> 
> 1995.5 S6 Avant, Green/Ecru, RS2 MAF, RS2 Exhaust
> Manifold, RS2 Injectors, Custom Turbo (K26 Turbine,
> Factory K26 Cold side (Audi Works '999' P/N) with
> 50mm intake and custom Innovative Turbo compressor
> wheel), TurboXS Type 25 Bypass Valve, Bilsteins,
> Eibachs, Big Reds, Spec II Clutch.
> 
> > -----Original Message-----
> > From: Joseph Pizzimenti
> [mailto:pizzoman at yahoo.com] 
> > Sent: Monday, December 22, 2003 11:50 AM
> > To: Lewis, Gary M; CaptMagu at aol.com;
> s-car-list at audifans.com
> > Subject: RE: [s-cars] Bypass Valves and Pressure
> Losses (Uh, Pizzo??)
> > 
> > 
> > Gary,
> > The pressure side should be feeding into the side
> of
> > the piston, not the bottom.  No wonder you breezed
> > through the install.  :-)
> > 
> > It's a bit at h doing it the right way, but isn't it
> > always?
> > 
> > Pizzo
> > 
> > --- "Lewis, Gary M" <gary.m.lewis2 at boeing.com>
> wrote:
> > > Hi Hap,
> > >  
> > > I oriented it from the bottom (pressure side),
> as
> > > the instructions indicated, with 6 shims, as
> Pizzo
> > > indicated.  It works far better than the old
> 710N
> > > unit from a pressure loss standpoint (I gained
> 200
> > > rpm in 4th gear).  My current automotive goal in
> > > life is to reduce pressure losses in hope of
> getting
> > > 26 psi at 3,000 rpm.  I'm making progress.
> > >  
> > > I think the idea you postulate is really a neat
> one.
> > >  It should provide far better response than a 
> > shimmed-to-the-max BPV.  
> > > Uses vaccuum primarily, not pressure and vaccum
> to open the 
> > valve.  I 
> > > will try it.
> > >  
> > > Sorry I took so long to answer, but I needed to
> > > think about this for a few days.
> > >  
> > > That Trevor is something else, ain't he?  The
> more I
> > > talk to him (virtually of course), the more I
> want
> > > to drive his car.  No to mention your of
> course...
> > >  
> > > Thanks Again,
> > > Gary Lewis
> > > 
> > > 1995.5 S6 Avant, Green/Ecru, RS2 MAF, RS2
> Exhaust
> > > Manifold, RS2 Injectors, Custom Turbo (K26
> Turbine,
> > > Factory K26 Cold side (Audi Works '999' P/N)
> with
> > > 50mm intake and custom Innovative Turbo
> compressor
> > > wheel), TurboXS Type 25 Bypass Valve, Bilsteins,
> > > Eibachs, Big Reds, Spec II Clutch.
> > > 
> > > 	-----Original Message-----
> > > 	From: CaptMagu at aol.com
> [mailto:CaptMagu at aol.com] 
> > > 	Sent: Thursday, December 18, 2003 1:23 PM
> > > 	To: Lewis, Gary M; s-car-list at audifans.com
> > > 	Subject: Re: [s-cars] Bypass Valves and
> Pressure
> > > Losses (Uh, Pizzo??)
> > > 	
> > > 	
> > > 	Gary
> > > 	
> > > 	I have the H34 TurboXS right now. Do you have
> it
> > > plumbed from the side? In other words is the
> > > pressure feed from the turbo plumbed into the
> side
> > > of the piston. If not you'll want to reorient it
> > > this way and then you won't need any washers. In
> > > fact I went to a softer/shorter spring. I had
> > > shimmed my old H34 like crazy, well beyond the
> > > provided washers and was still having a problem
> > > getting it to hold boost. I talked directly to
> the
> > > TurboXS folks a while back when there was a
> thread
> > > running on mounting BPVs backwards. They
> admitted
> > > that for high hp applications that this was the
> way
> > > to go and sent me a brand new H34 configured for
> a
> > > hard mount at the side. Tha's what I have now
> but
> > > even with the softer/shorter spring I'm still
> > > getting that boost surge at throttle lift from
> > > boosted runs. It was Trevor Frank's idea to try
> a
> > > softer spring and it has greatly improved the
> > > problem but has not totally fixed it. My next
> try is
> > > a beefier diaphram unit. The stock Mitsu EVO BPV
> > > couldn't hold my turbo's force.
> > > 	
> > > 	Hap, boostin and surgin in Everboost, Maguire
> > > 
> > > _______________________________________________
> > > S-CAR-List mailing list
> > > S-CAR-List at audifans.com 
> > >
> http://www.audifans.com/mailman/listinfo/s-car-list
> > 
> > 
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