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Carrera RSR
Joined: 08 Jan 2010
Posts: 2312
Location: Somerset, UK
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 Posted: Tue Dec 04, 2012 6:38 am Post subject: K26 /6 and /4 definitive part numbers |
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In my search for a K26/6 turbine housing I am being offered turbos which are believed to be #6 housings but do not match the numbers I have. It could be these are #4's. It could be that in the evolution of turbine castings they are actually newer parts with updated part numbers for a #6
To this end does anyone have a list of a link to the correct part numbers for turbine housings for series 1, series 2 and CGT RoW and US cars so I can be sure I don't buy an expensive paperweight or indeed pass on a correct version for my rebuild.
_________________
1980 931 - forged pistons, Piper cam, K27/26 3257 6.10 hybrid turbo, 951 FMIC, custom intake, Mittelmotor dizzy & cam pulley, H&S exhaust, GAZ Gold, Fuch'ed, Quaife
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Carrera RSR
Joined: 08 Jan 2010
Posts: 2312
Location: Somerset, UK
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| Posted: Tue Dec 04, 2012 7:02 am Post subject: |
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Just found this http://www.924board.org/viewtopic.php?t=15595&postdays=0&postorder=asc&start=0 but do we have a more definitive list of part numbers used and to which spec and appropriate cars?
_________________
1980 931 - forged pistons, Piper cam, K27/26 3257 6.10 hybrid turbo, 951 FMIC, custom intake, Mittelmotor dizzy & cam pulley, H&S exhaust, GAZ Gold, Fuch'ed, Quaife
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ideola
Joined: 01 Oct 2004
Posts: 15550
Location: Spring Lake MI
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Carrera RSR
Joined: 08 Jan 2010
Posts: 2312
Location: Somerset, UK
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| Posted: Tue Dec 04, 2012 8:11 am Post subject: |
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Thanks Dan for the link
Are you aware of any US 931's with a #6 turbine housing or were they all #4's?
_________________
1980 931 - forged pistons, Piper cam, K27/26 3257 6.10 hybrid turbo, 951 FMIC, custom intake, Mittelmotor dizzy & cam pulley, H&S exhaust, GAZ Gold, Fuch'ed, Quaife
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ideola
Joined: 01 Oct 2004
Posts: 15550
Location: Spring Lake MI
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| Posted: Tue Dec 04, 2012 8:21 am Post subject: |
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When you say #6 turbine housing, what are you referring to? A 6.10 housing?
According to the info in -nick's thread, the 1979 ROW 931 had 6.10 turbines, but I personally can't confirm it. I can confirm that the Carrera GT has a 6.10 as well (I have one on my 937, plus an extra that I've installed into the Club Sport). As far as I know, all of the US-Spec (1980 S1 and 1981-82 S2) had 4.10 turbines.
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Grenadiers
Joined: 20 Feb 2007
Posts: 3222
Location: Nelson, WI & Prescott, AZ
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| Posted: Tue Dec 04, 2012 9:42 am Post subject: |
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I posted a similar question on 931 Discussion concerning the turbo I have. It's a K26-2470R 6.10 and was on an SII engine. It has the original Hatch & Kirk metal tag, and needs a rebuild job for the oil seals. The hot-side part number is 5326 101 6366 doesn't appear to be cracked, the fins are in excellent shape. Is this what you are looking for? Before I pulled it, I ran 10psi boost without having the manual boost controller turned in at all.
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'83 944 Track car.
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Carrera RSR
Joined: 08 Jan 2010
Posts: 2312
Location: Somerset, UK
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| Posted: Tue Dec 04, 2012 10:09 am Post subject: |
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| Grenadiers wrote: | | I posted a similar question on 931 Discussion concerning the turbo I have. It's a K26-2470R 6.10 and was on an SII engine. It has the original Hatch & Kirk metal tag, and needs a rebuild job for the oil seals. The hot-side part number is 5326 101 6366 doesn't appear to be cracked, the fins are in excellent shape. Is this what you are looking for? Before I pulled it, I ran 10psi boost without having the manual boost controller turned in at all. |
Totally missed that post. This forum has been incredibly flaky for me for last few weeks with loads of missed page loads and errors.
Yes, ideally looking for a K26 2470 6.10, but ideally just the housing and wheel. I'm going to use the 2664 compressor with it which I already have. However I was just offered one in the UK earlier. That said the kind offer was done reluctantly so i can complete my turbo rebuild. So always looking for an alternative/spare.
_________________
1980 931 - forged pistons, Piper cam, K27/26 3257 6.10 hybrid turbo, 951 FMIC, custom intake, Mittelmotor dizzy & cam pulley, H&S exhaust, GAZ Gold, Fuch'ed, Quaife
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Grenadiers
Joined: 20 Feb 2007
Posts: 3222
Location: Nelson, WI & Prescott, AZ
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| Posted: Tue Dec 04, 2012 10:33 am Post subject: |
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Dan is sending me a SII turbo to get the car back on the road. I'm gonna have to see what kind of power I'll get out of that versus the one I took out. I'll hold onto this one for the time being.
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'83 944 Track car.
'88 924S Track car.
'89 944 Turbo
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2012 Jeep Wrangler
2014 Kia Soul
2001 Ford F350 powerstroke |
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WEASEL149
Joined: 19 Aug 2005
Posts: 595
Location: UK, Sheffield
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| Posted: Wed Dec 05, 2012 2:56 am Post subject: |
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| ideola wrote: | | As far as I know, all of the US-Spec (1980 S1 and 1981-82 S2) had 4.10. |
Yes this is what I have found and makes sense considering a stock US 931 had no more than 150hp. With a stock US engine, the 6.10 turbine housing would just kill response.
There's very little difference on any of the 931 turbochargers regarding turbine wheel and shaft. They're all the same size and differ only slightly in wheel design and material (Porsche revisions). Even the 924 Carrera GTS uses essentially the same wheel and shaft which in turn is the same size as the later 250hp 951S cars.
The difference in response between a 4.10 and a 6.10 turbine housing is down to the nozzle area which affects the turbine map considerably with regards to exhaust flow and gas velocity.
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Carrera RSR
Joined: 08 Jan 2010
Posts: 2312
Location: Somerset, UK
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| Posted: Wed Dec 05, 2012 6:28 am Post subject: |
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So the plot thickens. Despite having an S1 and S2, 30 years worth of turbo issues and what appears to be an S1 block/engine in my S2 spares car it appears both cars had the same/similar spec turbochargers
Both cars have
Compressor housing - 5326 101 5190F on the S1, no F on the S2
Compressor wheel - 5326 123 2201 in the S1 unsure in the S2 as the wheel measures differently, although the suggestion is from builder is this is a K26 2660 as per CGT!?
Turbine housing - 5326 100 6366
Shaft and wheel - 5326 120 2119 and 5002
So apart from the turbine shaft and wheel being the same across 931, CGT and CGTS family no other parts numbers match the originals or that of the KKK link above.
So it looks like I have two K26 2664 4.10 turbochargers the same and two S1 engines despite one set coming out of an S2. Interestingly the S2 with DITC and 951 FMIC ran at 198 bhp and essentially the same engine and turbo without DITC or IC ran at 168 bhp in my two cars.
Looks like I'm still on the search for a 6.10 turbine housing
_________________
1980 931 - forged pistons, Piper cam, K27/26 3257 6.10 hybrid turbo, 951 FMIC, custom intake, Mittelmotor dizzy & cam pulley, H&S exhaust, GAZ Gold, Fuch'ed, Quaife
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Carrera RSR
Joined: 08 Jan 2010
Posts: 2312
Location: Somerset, UK
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| Posted: Thu Dec 06, 2012 2:46 am Post subject: |
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Based on the post by 462avi, can someone confirm the following part numbers are a CGT turbocharger KA 2660GA 6.10?
Cold side housing p/n: 5326 101 5190F
hot side housing p/n: 5326 101 6366
My wheel numbers are in the earlier post. My builder believes now both hot sides are indeed 6.10
_________________
1980 931 - forged pistons, Piper cam, K27/26 3257 6.10 hybrid turbo, 951 FMIC, custom intake, Mittelmotor dizzy & cam pulley, H&S exhaust, GAZ Gold, Fuch'ed, Quaife
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