K26 in a 91 200 20v?????? 2ND POST!!!!!!

[Kaklikian, Gary]

My point was I don't think the Porsche K26 would be desirable on a nearly
stock 10vt or 20vt, particularly  in the larger chassis cars. With the high
weight and tall gearing of these vehicles, and the 20v being even a peakier
engine than the 10v, you would destroy low-end and mid-range response. The
best upgrade for a stock or chipped only 5000tq is to downsize from a K26 to
a K24. Even the RS2 turbo has a smaller turbine section than the K26. Plus,
you wouldn't be able to take advantage of the larger compressor without
exhaust, fuel & intercooler upgrades  (on the 20v as well as the 10v).  Ask
the guys on the S-car list -- RS2 injectors, exhaust manifolds, air flow
meters, exhaust cams, large intercoolers -- all to harness the power of a
RS2 or Garrett turbo even at only 15psi. 

btw, I'm not using a Porsche turbo on the 10v MC-2 in my 4000Q. I'm using a
standard Audi K26 (5000tq) with a 944-spec compressor wheel.  Runs
efficiently at 15-18psi on the 10v due to exhaust, intercooler, and fuel
upgrades, but it would definitely be the wrong application for a nearly
stock 10v or 20v in a large car.

Gary

-----Original Message-----
From: Ameer Antar [mailto:ameer at snet.net]
Sent: Monday, February 05, 2001 11:51 PM
To: quattro at audifans.com
Subject: RE: K26 in a 91 200 20v?????? 2ND POST!!!!!!


Actually w/ a 20v vs 10v, the 20v needs the bigger turbo. The Audi MC 
engines got K26 turbos, so a 20v which can pump in much more air, could 
deal w/ a larger compressor. If you are using a Porsche turbo on a 10v, it 
could surely work for a 20v. But as long as the guy's only doing 1-1.5 bar 
boost, lag will be minimal w/ the stock turbo. But beyond that, the stock 
turbo wouldn't be able to handle the requirements....time for a k26...a bit 
more lag, but a lot more power running all the way up to 7 grand.

-ameer


At 09:31 PM 2/5/2001 , you wrote:
>I looked at a 944 K26 a while back and it was not a direct bolt-on for the 
>MC 10v motor. I don't rember if it was the flanges, oil lines, coolant 
>lines, or what.  I believe the hot side was the same size (No. 8 ?) as the 
>Audi K26 fitted to the MC1, which is much larger than that on the K24 or 
>RS2 turbo.  The lag would probably be terrible on the 20vt. Plus, I think 
>you'd want to upgrade to the RS2 exhaust manifold first. You should post 
>this question to the S-Car List as there is much knowledge on turbos for 
>the 20v there.
>
>I am using a 944S-spec compressor wheel, which is several sizes larger 
>than the Audi K26 wheel, in the K26 on my 10vt in my 4000Q.  With the 
>short gearing, lots of other upgrades (eg 944 intercooler, boost 
>controller, etc.) lag is not really an issue. On an otherwise stock 20vt, 
>I don't think the 944 K26 would work well at all.
>
>Gary Kaklikian
>86 4ktq
>>92 S4
>>-----Original Message-----
>>From: Tim Sidders [mailto:tpsidders1 at netzero.net]
>>Sent: Monday, February 05, 2001 8:18
>>To: 20vlist; quattro list
>>Subject: K26 in a 91 200 20v?????? 2ND POST!!!!!!
>>
>>Hi all
>>I have a friend that is selling his K26 turbo out of a 944 turbo....I am 
>>considering buying it if I can install it in my 91 200 tq 20v. Is it a 
>>direct bolt on, and what type of gains could one expect to see. I already 
>>have the car chipped by SJM and a K&N, future plans are dual 3'' custom 
>>cat back exhaust and BIRA brake upgrade. This is my second post and my 
>>buddy is giving me a little heat. Any help is appreciated.
>>
>>Thanks
>>Tim
>>