Will a KKK K26 turbo from Audi 5000 fit a Eco diesel motor

[ancient]

I am curious about this turbo K26.  Will this turbo work for the diesel motor since the flanges look the same.  Anyone tried?    :?:

[therabbittree]

your audi 500 turbo is akk26? ands th eflange is a angeled sort triangel flange?..the audi 5000 turbos i have have round flange port..mummn if you have piucs that would be cool i'd like to just bolt on a kk26 on my engine..you may have to clearance the intake some as i imagine the compressor side is larger then the kkk24...to fit teh kk24 on a tdi  may you need to grind ALOT!!! off the tdi intake....
later
Deo

[ancient]

http://www.cardomain.com/ride/2150340/1

first picture.   Please let me know if it will fit the regular manifold.  Thanks.

your audi 500 turbo is akk26? ands th eflange is a angeled sort triangel flange?..the audi 5000 turbos i have have round flange port..mummn if you have piucs that would be cool i'd like to just bolt on a kk26 on my engine..you may have to clearance the intake some as i imagine the compressor side is larger then the kkk24...to fit teh kk24 on a tdi  may you need to grind ALOT!!! off the tdi intake....
later
Deo

[QuickTD]

Please let me know if it will fit the regular manifold. Thanks.

Nope.

[therabbittree]

nope again ha..yeah thats the round port style i was speaking about in my post above..you can either make an adapter or cut a 5cyl manifold off and weld it or make a exhaust manifold....definately will not bolt up with out some work...
later
Deo

[RabbitGTDguy]

The vw td style K24 has the trapazoidal flange just like the Garrett units do. The Audi 5k K26 units have the [O] style flange, almost looks like a standard T3 flange (rectangular) but has a bulge through the center . The compressor side of a K26 and a K24 are the same... .42 , the exhaust side is larger on the K26 at .48 vs. the VW TD K24 at .38. There are different varieties of the K26 as well because the Audi TD ran them as well as certain Porsche models of the mid/late 80's too. The VW/Audi configurations I've seen though are the same size on the compressor side though... .42    

Joe

[fspGTD]

I believe the turbine housing A/R of the 1.6lTD KKK K24 is .3:
http://www.vwdiesel.net/phpBB/viewtopic.php?t=1841&start=44

But besides A/R ratios, there are other factors impacting turbocharger performance that should be considered:
* Compressor and turbine wheel outside diameters and "trim" (correlating to the wheel's minor diameter and the blade's tip width.)  It's very important to get the these basic parameters sized correctly for the application.  The turbo "family number" describes the turbine wheel's OD (approx 66mm OD for a K26's turbine wheel versus approx 61mm OD for a K24's) but nothing else can be assumed.

* Blade design (including shape: radial, single-curved, or double/backwards curved, etc as well as perhaps the number of fins)  Backwards curved compressors = more efficient at low pressures commonly found on OEM passenger car appliations.  Not capable of developing the most boost pressure though.

* Clearance between wheels and housings  Tighter allows less compressed air to "leak" and is more efficient, provided that the wheel does not rub.  Ball bearings allow the clearances to be tightened up.

* Rotating inertia of the rotating assembly  This plays a role in determining "turbo lag", or how quickly the turbo responds when engine RPM and throttle varies (a small, light rotating assembly generally reacts to throttle and RPM changes quickly)