Russ Panneton

On Mon, 30 Jun 2003 22:52:45 -0400, "the rogue" <therogue@videotron.ca> wrote:

>Hi all,
>
> I'm looking into buying an '93 S4....
>
> I had it checked at a CAA Verification center and the guy told me it had
>a leak on or around the turbo seal....and that there was a litle bit of oil
>in the intake........
>

I believe it is normal for the turbo bearings to weep a small amount of oil so
you will always find a little oil in the intake tract. Especially in the
crossover to inter cooler rubber hose where it collects and eventually damages
the rubber leading to hose failure...

> My questions are these......Doesn't the turbo get hot enough to burn
>whatever oil gets on it?......how does oil get to it to lubricate it?....how
>is it that he could determine that there is a leak? Is this a sign of a
>turbo failure and how much to fix it if it is!......

There is an oil supply directly to the turbo center bearing and a large oil
return line back to the sump. There are also water supply and return lines to
the center bearing because it is water cooled...

>
> Could it be that the CAA tech misted the fact that there is a K&N air
>filter and that the owner has just cleaned it and thats the oil residue that
>was in the air intake?......How can I be sure?
>

If the oil was UPSTREAM of the turbo, then it might be from the K&N -- it
certainly would have nothing to do with the turbo. If the oil was downstream
of the turbo, I don't think the K&N would have anything to do with it...

> Aside from that issue, the car really looks in good shape......!
>
>I would greatly apreciate any coments or sugestions on what else to check on
>the car before going ahead with this purchase....
>
>Thanks,
>The Rogue
>

Check out the urS4 tech pages at www.urs4.com for some background and
http://www.sjmautotechnik.com/ for more troubleshooting info.

Regards,

Russ
--
Russ Panneton russ@s-cars.org
Nederland, CO "Too bad ignorance isn't painful"

the rogue

Thanks a great deal Russ,......The links are very informative

TheRogue,


"Russ Panneton" <russ@s-cars.org> wrote in message
news:f2f5ab96c718a09ad3e398ace8d3a207@free.teranew s.com...
> On Mon, 30 Jun 2003 22:52:45 -0400, "the rogue" <therogue@videotron.ca>
wrote:
>
> >Hi all,
> >
> > I'm looking into buying an '93 S4....
> >
> > I had it checked at a CAA Verification center and the guy told me it
had
> >a leak on or around the turbo seal....and that there was a litle bit of
oil
> >in the intake........
> >
>
> I believe it is normal for the turbo bearings to weep a small amount of
oil so
> you will always find a little oil in the intake tract. Especially in the
> crossover to inter cooler rubber hose where it collects and eventually
damages
> the rubber leading to hose failure...
>
> > My questions are these......Doesn't the turbo get hot enough to burn
> >whatever oil gets on it?......how does oil get to it to lubricate
it?....how
> >is it that he could determine that there is a leak? Is this a sign of a
> >turbo failure and how much to fix it if it is!......
>
> There is an oil supply directly to the turbo center bearing and a large
oil
> return line back to the sump. There are also water supply and return
lines to
> the center bearing because it is water cooled...
>
> >
> > Could it be that the CAA tech misted the fact that there is a K&N air
> >filter and that the owner has just cleaned it and thats the oil residue
that
> >was in the air intake?......How can I be sure?
> >
>
> If the oil was UPSTREAM of the turbo, then it might be from the K&N -- it
> certainly would have nothing to do with the turbo. If the oil was
downstream
> of the turbo, I don't think the K&N would have anything to do with it...
>
> > Aside from that issue, the car really looks in good shape......!
> >
> >I would greatly apreciate any coments or sugestions on what else to check
on
> >the car before going ahead with this purchase....
> >
> >Thanks,
> >The Rogue
> >
>
> Check out the urS4 tech pages at www.urs4.com for some background and
> http://www.sjmautotechnik.com/ for more troubleshooting info.
>
> Regards,
>
> Russ
> --
> Russ Panneton russ@s-cars.org
> Nederland, CO "Too bad ignorance isn't painful"