VATN Audi 2.5 TDi V6?

[Per Lindgren]

I have a little bit of info, but not much. I am unfortenately not very
experienced in turbos (yet). What I do know is that the VTG units are
made variable for better torque in the TDI applications.

auditude at cox.net wrote:

>Hi Per,
>
>Thanks.  Do you have some of this info?:
>
>Are they made by KKK?
>
The turbos in the S3 and 225 hp TT are K03 and K04 units respectively.
That would mean that they are KKK units, right? Well, after reading in a
German "Audi Atlas" it actually doesnt say that these are VTG units
though, I dont know where I picked that up. A similar VW Atlas doesnt go
that much into depth about the TDIs as the Audi book does.

>  Do they bolt up to a stock K24/26 type of exhaust manifold?
>
As I said, I dont have that much experience.  If they arent bolt-on,
they should be able to be made to fit by welding on another flange, right?

>  Can they work on a gas motor?
>
I would believe so.

>  Do they need some sort of electronic controller to work, or is it controlled by boost pressure somehow?
>
They are electronically controlled, yes. I dont know how, but I would
assume that they are dependent on either rpms, boost pressure or a
combination of both.

>  Are they available used or cheap somehow?
>
Probably, but I dont know exactly where, other than somewhere in Europe.
Try UK perhaps, if you dont know German, that is.

>
>
>I'm just trying to understand if this is something that could be used in place of a K24/26/27/RS2/etc.
>
I'm not too helpful, am I?

>
>
>The only VATN I heard about was the Aerochargers, and I heard they are very expensive and have a high incidence of either being DOA or failure in the field.
>
I've never heard of those, so I cant say anything about them.

PerL

>
>
>Thanks,
>
>Ken
>
>
>>From: Per Lindgren <lindgre at online.no>
>>Date: 2002/10/23 Wed PM 04:55:35 EDT
>>To: auditude at cox.net
>>CC: quattro at audifans.com
>>Subject: Re: VATN Audi 2.5 TDi V6?
>>
>>The variable turbine geometry chargers are used on several different
>>VW/Audi engines, like all TDIs from 110 hp upwards, the 180 and 225 hp
>>1.8Ts among others.
>>
>>PerL
>>
>>auditude at cox.net wrote:
>>
>>>I saw on a website that the car in the subject line has a variable air turbine nozzle type of turbo on it.  Is this true?  Where can I find more info on this?
>>>
>>>Would that turbo be useable on a gas turbo car?  Seems like a 2.5l might be the perfect motor to supply its turbo from, since the idea would be to supply lots of air.
>>>
>>>Thanks,
>>>
>>>Ken
>>>
>
>
>