Here is some hope for People with original KO3's and high miles.

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Mar 28, 2008 | 05:22 AM

#21

KillA6

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WOW that looks bad. I was surprised mine held out.I am not easy on my car.

And I tracked it,used race gas and toulene. I threw everything I could at those turbos.

Mar 28, 2008 | 01:00 PM

#22

absolutcq20v

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The alternative...

<img src="http://picasaweb.google.com/absolut27t/CooperTurbo/photo#5166971936116616482">
<a href="http://picasaweb.google.com/absolut27t/CooperTurbo">
Dead pass. side KO3 autopsy</a>

<img src="http://lh3.google.com/absolut27t/R5i4fUP9yrI/AAAAAAAAAYY/uQQ1EspEOZc/IMG_1330.jpg?imgmax=800">
<a href="http://picasaweb.google.com/absolut27t/ApkSTurbo">Very dead drivers side and undamaged pass. side KO3s</a>

I'm thinking the brass bearing isnt the issue, its the fan and/or shaft.

Mar 28, 2008 | 05:29 PM

#23

Dimi (A6 2.7T)

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From: Frederick, MD

Hm, mine do

Mar 30, 2008 | 06:54 AM

#24

Singletrack

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Are they still out? Grab the shaft and see if it moves side to side any significant amount...

That would be a sign that the bearings are wearing out.

Mar 30, 2008 | 07:02 AM

#25

KillA6

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Doesn't seem to move much at all! one does very very slightly.

Mar 30, 2008 | 10:39 AM

#26

Singletrack

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You should be fine as long as it isn't significant in any direction - check up and down also.

Small amounts of play will receive dampening from the oil. It has to be bad enough to let oil blow by the seal, which you would expect to see in the exhaust (hopefully) before the blades make contact with the housing.

Mar 31, 2008 | 04:53 AM

#27

KillA6

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Looks like with 120,000 miles my KO3's were going strong! I love the KO4's!!!

Mar 31, 2008 | 08:08 AM

#28

Singletrack

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Excellent!

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Jan 21, 2011 | 12:37 AM

#29

A6force

AudiWorld Junior Member

Joined: Jan 2011

Posts: 31

Likes: 1

From: wisconsin

super old post but id like to add i have a 2001 2.7t with stock ko3 with no leaks, no play and still running strong. oh i should add they have 174k on them.