[urq] Upper Wastegate Hose on '83 Ur Quattro

[Justin]

Yeah, I've seen the vacuum diagrams listed on the WX in the following
document on Martin's site: http://www.quattro.ca/Urq/urq-IST-MaintAdj.pdf
As using the Igloo port as a vacuum for the "Evaporative emission control
system"..basically the gas tank venalation...which I don't think the WR's
had... (as far as I know...).
So, connecting the wastgate port to the Igloo should be o.k., since the
vacuum created in the line is small....and would allow air to vent into the
intake system once the gate opens....
    I think is just matter of your personal preferece...

Justin
----- Original Message -----
From: "Buchholz, Steven" <Steven.Buchholz at kla-tencor.com>
To: <urq at audifans.com>
Sent: Tuesday, May 04, 2004 5:01 PM
Subject: RE: [urq] Upper Wastegate Hose on '83 Ur Quattro


... I don't see any way that it would make any more sense ... that port is
documented as a vent on the WX ... it doesn't need to be connected to
anything ... in fact if you started drawing a vacuum there you would be
working against the WG spring and actually causing the WG to open sooner.
Admittedly there isn't much of a vacuum on the back side of the airflow
sensor plate.  Its been a while since I've looked at the engine in my car,
but I know that the line coming off the top of the igloo on the WX is
definitely connected elsewhere ...

Steve B
San José, Kaleefohnia (USA)
>
> Yep, that makes more sense.....uses the engine vacuum for the upper
> wastegate pressure..
>
> > On the WR it's connected to the aluminium FI igloo dome thingy.
> >
> > -----Original Message-----
> >
> > This port is used for electronic boost control found on the
> 5000 turbo's,
> > otherwise it is open to air.
> > ----- Original Message -----
> >
> > Where does it go?  There is a hose attached to mine, but it
> doesn't go
> > anywhere and I see nothing in the vicinity to connect it to.
> >
_______________________________________________
Audifans urq mailing list
Send posts to: mailto:urq at audifans.com
Manage your list connection: http://www.audifans.com/mailman/listinfo/urq
Have an urq question?  Check the Audifans Knowledgebase!
http://www.audi-quattro.org/cgi-bin/twiki/view/Audi/UrQuattro
Have an urq answer? ... Please help others by adding to the KB ... all
contributions welcome!