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john924
Joined: 08 May 2007
Posts: 50
Location: Wales UK
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 Posted: Fri Jun 01, 2007 3:35 am Post subject: kkk 26 turbo |
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After finding that my turbo is beyond economic repair. I was wondering will any kkk 26 turbo fit my series 1 are there differences within the kkk26 range.
I've seen a couple on e bay and some of them are from various VW Audi and even Mercedes models and that some are water cooled.
Am I barking up the wrong tree when looking at these and keep looking for the elusive kkk 26 931 turbo.
cheers |
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462avi
Joined: 15 Sep 2006
Posts: 149
Location: Hollister, California
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| Posted: Mon Jun 04, 2007 12:36 am Post subject: |
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Unfortunately because of the triangular flange on the hotside, you are pretty much stuck. Unless you invest in a custom exhaust manifold.
Geoff
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2005 C230K
2002 grand cherokee with 4.7L |
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john924
Joined: 08 May 2007
Posts: 50
Location: Wales UK
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| Posted: Mon Jun 04, 2007 10:48 pm Post subject: |
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| Thanks Geoff |
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john924
Joined: 08 May 2007
Posts: 50
Location: Wales UK
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| Posted: Tue Jun 05, 2007 2:39 am Post subject: |
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| Is there any difference between the series 1 and series 2 turbos are they one in the same and can either be used on my series 1 924 |
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Rasta Monsta
Joined: 12 Jul 2006
Posts: 11733
Location: PacNW
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| Posted: Tue Jun 05, 2007 2:46 am Post subject: |
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Answer is in tech section, HERE.
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Toofah King Bad
- WeiBe (1987 924S 2.5t) - 931 S3
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Min
Joined: 04 Nov 2002
Posts: 2368
Location: Vernon, British Columbia, Canada
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| Posted: Wed Jun 06, 2007 4:25 am Post subject: |
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| 462avi wrote: | Unfortunately because of the triangular flange on the hotside, you are pretty much stuck. Unless you invest in a custom exhaust manifold.
Geoff |
If this particular problem was happening to me, I'd just cut the flange off and weld a standard garrett type flange on in its place.
Min
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Custom means it didn't come from a box.
1980 n/a with EDIS and Megasquirt II Injection. 7 different colors and counting. |
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Tigger937
Joined: 11 Apr 2004
Posts: 919
Location: PCA Milwaukee Region
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| Posted: Wed Jun 06, 2007 11:58 am Post subject: |
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| Min wrote: | | 462avi wrote: | Unfortunately because of the triangular flange on the hotside, you are pretty much stuck. Unless you invest in a custom exhaust manifold.
Geoff |
If this particular problem was happening to me, I'd just cut the flange off and weld a standard garrett type flange on in its place.
Min |
On cast iron?  The flange is cast into the exhaust manifold and doesn't protrude down any length to speak of so there is nothing to cut off. Don't get me wrong, I think it's a great idea, but it sounds like it may be a little tricky to implement?
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1981 931 (Concours)
1982 931 (Daily Driver)
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462avi
Joined: 15 Sep 2006
Posts: 149
Location: Hollister, California
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| Posted: Wed Jun 06, 2007 1:44 pm Post subject: |
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actually now that you guys mention it I was thinking about a way around this problem. I think an adapter plate might work. The only issue I see is the thermal dynamic problem it presents. Garretts and other turbos mount flanges are really big compared to ours. So my question is how turbulent would the exhaust gasses be going from our relatively small exhaust outlet into the larger garrett and would you even notice?
Geoff
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2005 C230K
2002 grand cherokee with 4.7L |
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Tigger937
Joined: 11 Apr 2004
Posts: 919
Location: PCA Milwaukee Region
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| Posted: Wed Jun 06, 2007 2:34 pm Post subject: |
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| 462avi wrote: | actually now that you guys mention it I was thinking about a way around this problem. I think an adapter plate might work. The only issue I see is the thermal dynamic problem it presents. Garretts and other turbos mount flanges are really big compared to ours. So my question is how turbulent would the exhaust gasses be going from our relatively small exhaust outlet into the larger garrett and would you even notice?
Geoff |
Yeah, I was thinking of an adapter plate too, but the problem is you don't have much room to work with. The turbo already sits too low causing the oil drainage problem Porsche tried to remedy with breather tube mod. Any adapter plate inserted would push the turbo even lower. I'm afraid there wouldn't be enough downward slope into the oil pan. One could always move the turbo to another location and use an adapter pipe to connect, but that would require much more work relocating things.
In regards to your concern, it may be a valid one. The exhaust gases would have to expand to fill the larger chamber thus losing velocity. Haven't seen a Garrett up close so I don't know. I have looked closely at our KKK units and the turbine inlet gets smaller the further in you go. I'm assuming that's to increase exhaust gas velocity even further. Maybe there are other Garrett units with smaller turbine inlets? Or, maybe it's not even a problem at all since the Garrett units supposedly spin up much easier allowing you to get away with much slower gas velocity.
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1981 931 (Concours)
1982 931 (Daily Driver)
"Think outside the box" |
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Min
Joined: 04 Nov 2002
Posts: 2368
Location: Vernon, British Columbia, Canada
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| Posted: Thu Jun 07, 2007 5:03 am Post subject: |
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| Tigger937 wrote: | | On cast iron? The flange is cast into the exhaust manifold and doesn't protrude down any length to speak of so there is nothing to cut off. Don't get me wrong, I think it's a great idea, but it sounds like it may be a little tricky to implement? |
Heh, ever seen pictures of joakims motor? .... this is what he's done, and his dyno sheet is impressive. I would have no qualms about chopping the flange off and welding a new one on in its place. This is in no way my idea, I'll try to dig up joakims motor pictures.
Min
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Custom means it didn't come from a box.
1980 n/a with EDIS and Megasquirt II Injection. 7 different colors and counting. |
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Min
Joined: 04 Nov 2002
Posts: 2368
Location: Vernon, British Columbia, Canada
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john924
Joined: 08 May 2007
Posts: 50
Location: Wales UK
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| Posted: Thu Jun 07, 2007 5:35 am Post subject: |
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Could I use the series 2 turbo but change the hot side with one from my knackerd series 1?
Could that work? |
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462avi
Joined: 15 Sep 2006
Posts: 149
Location: Hollister, California
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| Posted: Thu Jun 07, 2007 6:38 am Post subject: |
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John
What exactly is knackerd (U.S. translation F%#@ up) about your turbo. Generally it is the hot side housing that cracks on these turbos which also damages the turbine. If the bearings are shot send it in to a rebuilder and have it fixed its a lot cheaper than buying new. I doubt you will find a used turbo that is worth a shit. You can also if you are brave buy a bearing kit from Automotion for this turbo. The coldside compressor wheel and hot side turbine are on a common shaft and they are balanced together so care must be used when you separate them.
Geoff
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2005 C230K
2002 grand cherokee with 4.7L |
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john924
Joined: 08 May 2007
Posts: 50
Location: Wales UK
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| Posted: Thu Jun 07, 2007 6:55 am Post subject: |
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After an engine rebuild (we think) something was dropped down the exhaust manifold and damaged the turbine and bent the shaft it had been running for a good few miles but finally gave up.
All the casings are fine, i've checked the hot side and its ok |
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john924
Joined: 08 May 2007
Posts: 50
Location: Wales UK
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| Posted: Thu Jun 07, 2007 6:57 am Post subject: |
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| I was just wondering if the hotside is the problem then change it for the on on the series 1 |
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