[s-cars] sympt of a stock turbo failing?

[Lewis, Gary M]

Just another datapoint, after installing all the go-fast RS2 goodies and 26 psi, I overspun the stock K24 to the point where the shaft noodled and the exhaust turbine hit the housing.  AND, the damn thing made absolutely no noise whatsoever.

Gary Lewis

1995.5 S6 Avant, Green/Ecru, RS2 MAF, RS2 Exhaust Manifold, RS2 Injectors, Custom Turbo (K26 Turbine, Factory K26 Cold side (Audi Works '999' P/N) with 50mm intake and custom Innovative Turbo compressor wheel), TurboXS Type 25 Bypass Valve, Bilsteins, Eibachs, Big Reds, Spec II Clutch.





> -----Original Message-----
> From: chad clark [mailto:chadaclark4 at msn.com] 
> Sent: Sunday, January 18, 2004 12:51 PM
> To: james McCarthy; s-car-list at audifans.com
> Subject: Re: [s-cars] sympt of a stock turbo failing?
> 
> 
> James, from my experience, you can't automatically assume 
> that a change in noise/whine/spoolup means that the turbo is 
> failing. With that said, sometimes a noisy turbo does mean 
> that it is failing. There are many an S4 out there running 
> the stock turbo at 150-200k mi. I've had exactly 5 turbos on 
> my S4 since I've owned it. 4 K-24's and 1 K-26. Every K-24 
> I've had on the car sounded differently. Some completely 
> silent, some with an audible flutter at high boost(23psi) 
> some whiney when cold. The one noise that was very different 
> from the rest was the K-24 with a 1 slightly bent impeller 
> blade. It was an extra loud audible whine. Drove it like that 
> for two years, lots of boost, no failure and minimal center 
> section play. None of these turbos were removed because of 
> failure. It was done more for experimentation than anything 
> else. Seems even the K-24 can be very robust even with a Stage
> 1+.  However, I'm sure many others may relate other experiences. Yes, 
> 1+they
> are rebuildable but at quite a cost. May want to look for a 
> low mileage used one for much less. I am currently turbo-less 
> in my inventory. HTH,
> 
> Chad 
> 
> 
> on 1/18/04 1:25 PM, james McCarthy at jjssmccarthy at yahoo.com wrote:
> 
> > Wondering about the sympt of a failing turbo...
> > louder?  The turbo whine on my fathers 93 s4 (MTM
> > stage1 with samcos) is noticably louder than his 95 s6
> > avant or either of my 95.5 s6's... no noticable loss
> > in power
> > So what happens when they start to go?
> > Are they rebuildable - any sources?
> > He's not really interested in increassing power should
> > this one die.
> > thanks
> > -jjm
> > 95.5 s6 sedan - his
> > 95.5 s6 avant - hers
> > 
> > also in the family
> > 01 tt 180q
> > 95 s6 avant
> > 93 s4
> > 88 5000q
> > 
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