Re: Crank Seal

[Richard Beels <beels@technologist.com>]

This thread is really funny.  Mine makes the whistle when it's cold.  It 
did it last winter.  I replaced the oil seal when I did my belt this 
fall.  It still whistles.  Happens around 2700-3000 RPMs when cold.

WTF!

At 10:17 PM 12/7/99 ,  Fred Munro was inspired to say:
>Hi Iain;
>
>     The seal is designed to keep oil in more than it is designed to keep air
>out. The seal lips face inward and the seal is open to the inside, so oil
>pressure forces the lips against the crank. Air pressure from the outside
>pushes the seal lips away from the crank, so I would think it is possible to
>leak air and not oil. Besides, I had this whistle on my '91 200q and it went
>away when I replaced the oil seal as part of the t-belt job. It didn't leak
>any oil, but had an ear-piercing whistle when first started in winter.
>
>Fred Munro
>'94 S4  93k km
>
>----- Original Message -----
>From: "Iain Atkinson (ETL)" <iain.atkinson@etl.ericsson.se>
>To: "'Alexander van Gerbig'" <Audi_80@email.msn.com>
>Cc: <quattro@audifans.com>
>Sent: Tuesday, December 07, 1999 2:32 AM
>Subject: RE: Crank Seal
>
>
> > Alexander
> >
> > I would like to know how the seal whistles if it doesn't leak oil, one
>would assume that if air can pass then so can oil. Does it leak oil?????
> >
> >
> > Iain
> >
> > -----Original Message-----
> > From: Alexander van Gerbig [mailto:Audi_80@email.msn.com]
> > Sent: 06 December 1999 18:37
> > To: quattro@audifans.com
> > Subject: Crank Seal
> >
> >     It seems as if my front crank seal is bad.  The loud whistling noise
> > must be the crank seal since after adjusting the alternator/water pump
>belt
> > the noise persisted.  I pulled the dipstick when the whistling was
>happening
> > and then allowed the engine to sit for a sec, then I revved and the noise
> > was gone.  I assume that is a good indication that the seal is bad.  How
> > pertinent a job is this?  I also have a popping noise which sounds like
>air
> > moving around down there.  Is this an ASAP job?
> >
> > Thanks!
> >
> > Alexander van Gerbig -- '88 Audi 80
> >
> > The Audi 80 Pages-----------------------
> > http://surf.to/the80pages.com
> >
> > Katonah, NY 10536
> >
> >
> >
> >


Cheers!