Seems like bad turbo. Need help!

[Jörgen Karlsson]

Hi,

Have you been running lead replacement fuel?

The additives wear the turbine blades, this will eventually lead to a turbo
rebuild. If the wear is uneven the bearings will be damaged. On one of my
turbos the wear was bad enough for one of the blades to release the last
2mm. After a while the turbine shaft bent because of the uneven load, but
don't worry about it. If the turbine is worn you will have to change the
shaft anyway sooner or later.

Bearing failiure is the usual cause for a turbo rebuild.

Jörgen


----- Original Message -----
From: "Konstantin Bogach" <kbogach at home.com>
To: <Seems at home.com>; <like at home.com>; <bad at home.com>;
<quattro at audifans.com>
Sent: Sunday, October 07, 2001 2:13 AM
Subject: Seems like bad turbo. Need help!


> I looking into K-26 outlet and I think that something is not right:
> edges of vanes are worn like after rough file and when I spin shaft it
> come to stop very quickly (about 1sec) compare to K-24 in another car I
> have which spins about 3-4 sec before it stops.  I am not sure it
> happens just because K-26 is bigger.   What might be a reason for that?
> I don't know exactly how turbo is built inside. I have Bentley but I did
> not see it shows turbo internals.  What is usual cause when  turbo needs
> to be rebuilt?
>