[s-cars] RE: Baffled over boost

[tony.curran at sympatico.ca]

Yeah, I was thinking cross-over pipe, if you have plastic. Leak test wouldn't show any deformities that may occur under hi temp. The plastic pipe has metal ring where hoses clamp down and they sometimes go AWOL.

Tony
96 S6

> 
> From: Bill Clancy <clancybill at yahoo.com>
> Date: 2005/05/26 Thu PM 01:35:29 EST
> To: "Mock, Bruce J (Bruce)" <bmock at avaya.com>
> CC: s-car-list at audifans.com
> Subject: Re: [s-cars] RE: Baffled over boost
> 
> 
> I had a (very) loose clamp on the lower turbo hose where it met the 
> crossover pipe.   When the pressure built up to a certain point, it 
> would blow out suddenly.   There was enough of a seal to hold it for a 
> few PSI and it would hold at 1/4 throttle, but blow out if I pushed on 
> the gas pedal too far.    
> As others suggested, I would have thought the bypass diverter valve 
> too.   Are you sure the one that is in there is strong enough?    I had 
> to replace mine with a forged one from ECS, although I didn't have 
> exactly the problem that you describe.
> 
> You are talking about the bypass diverter valve right?   not the 
> wastegate bypass regulator valve?    As a test you can disconnect the 
> vacuum from the wastegate to that valve.   And if you have a boost 
> gauge, you could watch it to see if there is a difference with the 
> vacuum to the valve disconnected.   
> 
> 
> 
> 
> 
> Mock, Bruce J (Bruce) wrote:
> 
> >Whoops again - update to my update  (Sorry)
> > 
> >I checked and replaced the Bypass valve.  It was bad - but did not solve this boost issue
> > 
> >I have also pulled a vacuum on the Waste Gate - the diaphragm holds a vacuum
> > 
> >Thanks
> > 
> >Bruce
> > 
> >
> ><[Mock, Bruce J (Bruce)] snip> 
> >
> >
> >Hi Guys:
> > 
> >This list is truly priceless.  I've been on this list almost since its humble beginning and have soaked-up immeasurable bits of wisdom to the point where I feel like NO matter what goes wrong with my '93 S4,  (and at 175,000mi it really has not been much at all! )  I can tackle the problem.  I know most all of us would agree about the great worth of this virtual community.  Thanks guys.
> > 
> >This little problem has me completely stumped:
> > 
> >Again:  '93 S4 w/ 175,000mi stock expect for MTM stage 1 chip and RS2 Ex. manifold.
> ><snip>
> >
> >_______________________________________________
> >S-CAR-List mailing list
> >S-CAR-List at audifans.com
> >http://www.audifans.com/mailman/listinfo/s-car-list
> >
> >  
> >
> _______________________________________________
> S-CAR-List mailing list
> S-CAR-List at audifans.com
> http://www.audifans.com/mailman/listinfo/s-car-list
>