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WTB 26/8 turbo compressor wheel.

I need a new compressor wheel for my kkk 26/8 turbo.
Is anyone able to help me out?
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1990 944 T: 100 000 km/63K miles,
1997 986 2.5L: 95 000 km/60K miles,
Living in the trackless land of plenty!
Old 01-18-2010, 01:03 AM
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from my knowledge the comp. wheel is the cold side wheel. i have a 26/8 cold side wheel thats in fine shape.
Old 01-18-2010, 07:09 PM
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Yep, that's the one. PM sent!
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1990 944 T: 100 000 km/63K miles,
1997 986 2.5L: 95 000 km/60K miles,
Living in the trackless land of plenty!
Old 01-19-2010, 12:31 AM
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Still searching...
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1990 944 T: 100 000 km/63K miles,
1997 986 2.5L: 95 000 km/60K miles,
Living in the trackless land of plenty!
Old 01-25-2010, 03:28 AM
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bump!
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1990 944 T: 100 000 km/63K miles,
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Living in the trackless land of plenty!
Old 02-02-2010, 11:38 PM
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Do you realize that your are actually looking for the "K26" compressor wheel, meaning that the compressor wheel is the same for both the K26/6 and K26/8?

Only difference between the two is the HOT side...

Cheers, Keith
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NASA/PCA Instructor: '88 951S - with LBE, Guru chips, 3Bar FPR, 1.3mm shimmed WG, 3120 lbs, 256 RWHP, 15 psig boost
1987 924S 944 SPEC racecar - '88 pistons/DME, short 5th
1987 944S - Restored salvage title, ready to live again
I can fix your late 944 Cruise Control module - PM for details
Old 02-03-2010, 12:30 AM
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Quote:
the compressor wheel is the same for both the K26/6 and K26/8?
I have been told that there are differences in indusor size and part numbers?
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1990 944 T: 100 000 km/63K miles,
1997 986 2.5L: 95 000 km/60K miles,
Living in the trackless land of plenty!
Old 02-03-2010, 05:11 AM
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Not all K26 compressor wheels are the same!!! They are machined specifically to the compressor housing. I have about a dozen K26 wheels from 931 and 944 K26 turbos floating around my shop, and there are subtle differences in the design and shape and height of the fins between the various part numbers.

The part number for the compressor wheel bebbetufs is seeking is either 5326.123.2201 or 5326.123.2025 (for post-July-1995 builds). The turbo3k site is extremely helpful in identifying specific part numbers and cross referencing to other applications:
http://eng.turbo3k.com/catalogue/d-1559/
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15 981 GTS | 88 924S SE | 82 931 Holbert | 82 931 Rallye | 81 937 | 81 Euro 931 | 81 Weissach | 80 US 928 | 80 US 931 '941' | 80 US 931 | 80 931 GTR | 79 Sebring | 78 D-Prod Replica | 78 w/D-Prod kit | 78 Poli-Form | 78 Limited Edition | 77 Martini
Old 02-03-2010, 05:21 AM
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In the Fires of Hell.....
 
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The compressor housing on both of my KKK's (K26/6 and K26/8) were identical, AFAIK. So much so that I swapped one out for the other, if I remember correctly.

I didn't take measurements on inducer/exducer dimensions, however there was no interference between the two.

Ideola, if that is the case, then he would need to be looking for not just a K26/8 compressor wheel, but a compressor wheel/housing combination, correct?

I guess that the easiest way to do this is to find a K26/6 (Available for under $100) and take some measurements.

Keith
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NASA/PCA Instructor: '88 951S - with LBE, Guru chips, 3Bar FPR, 1.3mm shimmed WG, 3120 lbs, 256 RWHP, 15 psig boost
1987 924S 944 SPEC racecar - '88 pistons/DME, short 5th
1987 944S - Restored salvage title, ready to live again
I can fix your late 944 Cruise Control module - PM for details

Last edited by kdjones2000; 02-03-2010 at 10:25 AM..
Old 02-03-2010, 10:20 AM
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I was thinking you would clear that up ideola.

I have finally found an affordable source of brand new wheels.
It is STK Turbo Technik in Germany, they speak English.
60 Euros a pop is acceptable for a brand new and more recent wheel.

I'm currently debating sending the whole thing for a rebuild, or simply buy the parts and do it myself.
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1990 944 T: 100 000 km/63K miles,
1997 986 2.5L: 95 000 km/60K miles,
Living in the trackless land of plenty!

Last edited by bebbetufs; 02-03-2010 at 11:08 AM..
Old 02-03-2010, 10:49 AM
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I didn't ask, but I presume that he has a unit with a damaged compressor wheel, so he just needs to replace the wheel.

According to the turbo3k site, there were four different versions of the 944 K26 unit, and there were the following six compressor wheel part numbers:
For turbo part #5326 970 6710 & 5326 970 6720:
5326 123 2039
5326 123 2015
5326 123 2020

For turbo part #5326 970 7041
5326 123 2201
5326 123 2022

For turbo part #5326 970 7042
5326 123 2201
5326 123 2025

Based on the turbo part number he gave me (5326 970 7402), that indicates compressor wheel 5326 123 2201 or 5326 123 2025.

Now, it is possible that the wheels are all interchangeable with the same compressor housing, but personally, I wouldn't risk it. I can tell you for a fact that the S1 and S2 compressor wheels for a 931 are NOT the same and require different compressor housings. The housings look identical from the outside, but they are machined differently on the inside due to the height of the compressor wheels being slightly different.

So I presume the different part numbers are meaningful, and that the compressor wheel MUST be matched to the correct housing. Of course, the housings are interchangeable with respect to bolting them to the bearing assembly, so there should be no trouble interchanging a housing+wheel in a matched set.


Quote:
Originally Posted by kdjones2000 View Post
The compressor housing on both of my KKK's (K26/6 and K26/8) were identical, AFAIK. So much so that I swapped one out for the other, if I remember correctly.

I didn't take measurements on inducer/exducer dimensions, however there was no interference between the two.

Ideola, if that is the case, then he would need to be looking for not just a K26/8 compressor wheel, but a compressor wheel/housing combination, correct?

I guess that the easiest way to do this is to find a K26/6 (Available for under $100) and take some measurements.

Keith
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15 981 GTS | 88 924S SE | 82 931 Holbert | 82 931 Rallye | 81 937 | 81 Euro 931 | 81 Weissach | 80 US 928 | 80 US 931 '941' | 80 US 931 | 80 931 GTR | 79 Sebring | 78 D-Prod Replica | 78 w/D-Prod kit | 78 Poli-Form | 78 Limited Edition | 77 Martini
Old 02-03-2010, 10:54 AM
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In the Fires of Hell.....
 
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Quote:
Originally Posted by bebbetufs View Post
I was thinking you would clear that up ideola.

I have finally found an affordable source of brand new wheels.
It is STK Turbo Technik in Germany, they speak English.
60 Euros a pop is acceptable for a brand new and more recent wheel.

I'm currently debating sending the whole thing for a rebuild, or simply buy the parts and do it myself.
What would stop you from buying a K26/6 and simply replacing your compressor side with the wheel/housing from it?

That sounds cheaper and more convenient than getting a wheel from Germany...
__________________
NASA/PCA Instructor: '88 951S - with LBE, Guru chips, 3Bar FPR, 1.3mm shimmed WG, 3120 lbs, 256 RWHP, 15 psig boost
1987 924S 944 SPEC racecar - '88 pistons/DME, short 5th
1987 944S - Restored salvage title, ready to live again
I can fix your late 944 Cruise Control module - PM for details
Old 02-03-2010, 11:28 AM
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Because the later wheel may not be configured the same relative to the compressor map. It would be somewhat matched to the lug line of the /8 turbine wheel, and the earlier compressor wheel may not be suitable. Unless he is building a very specific hybrid or custom turbo, it would be best to match to the original setup.

bebbetufs, I can heartily recommend John Walzel at Majestic Turbo, and you may want to check with him before ordering parts, as he may be able to source what you need as part of a rebuild for cheaper than what you can get the part as an individual. When I worked with him on my hybrid turbo for my UWB 931 project, he was able to source the various components and charged me less than what I would have paid sourcing parts myself.
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15 981 GTS | 88 924S SE | 82 931 Holbert | 82 931 Rallye | 81 937 | 81 Euro 931 | 81 Weissach | 80 US 928 | 80 US 931 '941' | 80 US 931 | 80 931 GTR | 79 Sebring | 78 D-Prod Replica | 78 w/D-Prod kit | 78 Poli-Form | 78 Limited Edition | 77 Martini

Last edited by ideola; 02-03-2010 at 12:44 PM..
Old 02-03-2010, 12:41 PM
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Excellent tip Ideola. I've been searching for 2 months so I can spend a few more days. I'll give him a call.

@Keith: I live in Norway, unfortunately, and few people are willing to ship internationally.

The only offer I've received on a matched set was for $175. Then there's the increased shipping cost for the larger/heavier parcel, and finally a 25% norwegian VAT on the total.

I will off course prefer to buy second hand if someone is willing to sell me a suitable wheel or a cheap matched set.
__________________
1990 944 T: 100 000 km/63K miles,
1997 986 2.5L: 95 000 km/60K miles,
Living in the trackless land of plenty!

Last edited by bebbetufs; 02-03-2010 at 01:00 PM..
Old 02-03-2010, 12:55 PM
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