| View previous topic :: View next topic |
| Author |
Message |
Joes924Racer
Joined: 03 Nov 2002
Posts: 11964
Location: Oregon, Denver Colorado native!
|
 Posted: Fri Apr 01, 2011 2:50 am Post subject: |
 |
|
I really like the idea of upgrading to a watercooled housing,
Any other housings besides the prefurred 951 housing. Goin back
to Nicks statement of other Audi units working.
_________________
1979 porsche 924 Na
1980 porsche Turbo 931GT Replica
Have u ever driven a turbo. |
|
| Back to top |
|
 |
nwns
Joined: 27 Sep 2008
Posts: 93
Location: Lancashire, UK
|
| Posted: Wed Dec 07, 2011 1:55 am Post subject: |
|
|
SO if I buy a K26/6 I can make my euro S1 K26 into a watercooled turbo? By bolting it all together?
Why do I keep seeing that it needs to be a K26/8?
_________________
Pete |
|
| Back to top |
|
|
gegge
Joined: 27 Jul 2007
Posts: 1124
Location: Sweden
|
| Posted: Wed Dec 07, 2011 2:40 am Post subject: |
|
|
| nwns wrote: | SO if I buy a K26/6 I can make my euro S1 K26 into a watercooled turbo? By bolting it all together?
Why do I keep seeing that it needs to be a K26/8? |
It depends which K26/6 you are talking about. The Porsche 944 K26/6 doesn´t fit and the Audi K26/6 doesn´t have watercooling, but there are other versions of course.
_________________
Carl Fredrik Torkildsen
924 turbo -81 Carrera GT RESTOMOD
924 turbo -80 Dolomite De Luxe
924 -85 DP kit, BBS RS, M030 and tuned engine
924s -86 Black on black turbo with Fuchs |
|
| Back to top |
|
|
Dutch924-racer
Joined: 23 Jul 2007
Posts: 1077
Location: The Netherlands
|
| Posted: Wed Dec 07, 2011 3:52 am Post subject: |
|
|
Is the k26/8 hotside a bolt on swap with the 931 turbo one?
_________________
937 trackday car
Series 2 engine
951S turbo and intercooler
Fast road camshaft
Forge recirculation valve + boost controller
Last edited by Dutch924-racer on Sat Aug 08, 2015 3:47 pm; edited 1 time in total |
|
| Back to top |
|
|
ideola
Joined: 01 Oct 2004
Posts: 15548
Location: Spring Lake MI
|
| Posted: Wed Dec 07, 2011 3:54 am Post subject: |
|
|
If you're having a turbo professionally rebuilt, just get the center bearing section from a standard 951 water-cooled turbo, and tell the rebuilder to use the bearing housing from the 951 unit. Use the turbine wheel, turbine housing, turbine shaft, compressor housing, and compressor wheel from the 931. Only the bearing housing needs to be replaced to make it water cooled.
_________________
erstwhile owner of just about every 924 variant ever made |
|
| Back to top |
|
|
McGyver
Joined: 24 Feb 2009
Posts: 354
Location: Jelenia Gora - Poland
|
|
| Back to top |
|
|
kcoyle
Joined: 15 Jan 2011
Posts: 712
Location: Long Island, NY
|
| Posted: Thu Apr 12, 2012 6:10 am Post subject: |
|
|
Found while surfing the net, might be useful to someone researching turbos. It's BorgWarner/3k/schwitzer's page.
http://www.turbodriven.com/en/turbofacts/nameplate.aspx
http://www.turbodriven.com/en/products/default.aspx
I shot them an email regarding my 6407 turbo looking for a compressor map. I'll post if I find something out.
_________________
1982 931- Stock with MBC at 8psi
Relax, all right? My old man is a television repairman, he's got this ultimate set of tools. I can fix it. |
|
| Back to top |
|
|
gegge
Joined: 27 Jul 2007
Posts: 1124
Location: Sweden
|
| Posted: Thu Apr 12, 2012 6:41 am Post subject: |
|
|
That is a K26-2664G4.10 turbo and there is a map from Audi 100 turbo available here on the forum.
_________________
Carl Fredrik Torkildsen
924 turbo -81 Carrera GT RESTOMOD
924 turbo -80 Dolomite De Luxe
924 -85 DP kit, BBS RS, M030 and tuned engine
924s -86 Black on black turbo with Fuchs |
|
| Back to top |
|
|
kcoyle
Joined: 15 Jan 2011
Posts: 712
Location: Long Island, NY
|
| Posted: Fri Apr 13, 2012 7:45 am Post subject: |
|
|
I think this is the correct map. So, if I am reading this correctly, and my 2407 is similar to this audi 2664 map, then this turbo is suitable for 12psi?
PR of 1.8 at .014 m3/s puts me at 72% efficiency range at 6000rpm
and PR of 1.8 at .08 m3/s puts me 65% efficency at 3500rpm?
Did I get this right?
_________________
_________________
1982 931- Stock with MBC at 8psi
Relax, all right? My old man is a television repairman, he's got this ultimate set of tools. I can fix it. |
|
| Back to top |
|
|
Dutch924-racer
Joined: 23 Jul 2007
Posts: 1077
Location: The Netherlands
|
| Posted: Tue Jan 15, 2013 6:14 am Post subject: |
|
|
is it possible to use a 924 cold side on a 944 k26/8 ?
_________________
937 trackday car
Series 2 engine
951S turbo and intercooler
Fast road camshaft
Forge recirculation valve + boost controller |
|
| Back to top |
|
|
gegge
Joined: 27 Jul 2007
Posts: 1124
Location: Sweden
|
| Posted: Tue Jan 15, 2013 5:06 pm Post subject: |
|
|
| Dutch924-racer wrote: | | is it possible to use a 924 cold side on a 944 k26/8 ? |
Yes, more or less bolt on together with the compressor wheel and backplate. Just make sure that the height of the wheel measured from the backside of the backplate is the same (or close). There are different wheels: flatback and superback. They goes with either the flat backplate or the one with a recess
_________________
Carl Fredrik Torkildsen
924 turbo -81 Carrera GT RESTOMOD
924 turbo -80 Dolomite De Luxe
924 -85 DP kit, BBS RS, M030 and tuned engine
924s -86 Black on black turbo with Fuchs |
|
| Back to top |
|
|
Fasteddie313
Joined: 29 Sep 2013
Posts: 2596
Location: MI
|
| Posted: Tue Apr 01, 2014 5:42 am Post subject: |
|
|
something to add...
I have been doing a metric S**t tun of research on how to put together the best turbo for my car and I came across an interesting fact that has been referenced as similar.
Carrera gts turbo = K26-2670GA8.10
951 s2 turbo = k26-2670gga8.11
and cross-referencing part numbes I have found out that infact the gts compressor wheel and the 951 250hp compressor wheel are one in the same oem part number 5326-123-2201
also very similar turbine housings
Carrera gts = GA8.10
951 s2 = gga8.11
very similar VE numbers
the following is a comparison of the 2670 compressor wheel vs the 2664 compressor wheel of a stock 931 s1 turbo because I am trying to find out if I can source a 2670 wheel and bore my compressor housing to match it
951 s k26-2670gga8.11
5326-970-7042
K26 Superback compressor wheel 6 blades
OE part # 5326-123-2201
part# / wheel diamiter / inducer dia / tip height / bore ID / trim
5326-123-2201 / 66,00 / 46,10 / 4,90 / 6,80 / 49
5326-123-2016 / 65.94 / 41.98 / 6.84 / 6.80 / trim??
5326-123-2016 is the 2664 trim compressor wheel OE part number from 4607 OE s1 turbo
it seems that its not going to be possible because the tip height is larger on the 2664 than 2670 so you would actually have to add metal and rebore to the size
the 2664 has larger tip heights but a much smaller inducer diameter 41.98 vs 46.10 for the 2670
just thaught this was cool information that I could share..
_________________
80 Turbo - Slightly Modified |
|
| Back to top |
|
|
MikeDanger
Joined: 21 Nov 2002
Posts: 770
Location: Denver
|
| Posted: Tue Dec 16, 2014 3:25 pm Post subject: |
|
|
so it seems my 81... has an early turbo: 2664 front end... But it has the late manifold... and I always thought the you can't put an early turbo on a late manifold?
So im not sure what hot side I have?? either way, what performance differences would I notice? since I've always read the early turbo was more desirable?
_________________
It was either this or a giant box of legos |
|
| Back to top |
|
|
MikeDanger
Joined: 21 Nov 2002
Posts: 770
Location: Denver
|
| Posted: Fri Dec 19, 2014 2:46 pm Post subject: |
|
|
| MikeDanger wrote: | so it seems my 81... has an early turbo: 2664 front end... But it has the late manifold... and I always thought the you can't put an early turbo on a late manifold?
So im not sure what hot side I have?? either way, what performance differences would I notice? since I've always read the early turbo was more desirable? |
anyone?
BTW front plate also says G4.10, but I cant be certain with the above info
_________________
It was either this or a giant box of legos |
|
| Back to top |
|
|
Cedric
Joined: 27 Aug 2004
Posts: 2609
Location: Sweden
|
| Posted: Fri Dec 19, 2014 4:10 pm Post subject: |
|
|
| MikeDanger wrote: | | MikeDanger wrote: | so it seems my 81... has an early turbo: 2664 front end... But it has the late manifold... and I always thought the you can't put an early turbo on a late manifold?
So im not sure what hot side I have?? either way, what performance differences would I notice? since I've always read the early turbo was more desirable? |
anyone?
BTW front plate also says G4.10, but I cant be certain with the above info |
I have that turbo on my car (S1 car with s2 engine), i is significantly better at high rpms. But lost quiet a lot of the bottom en compared to the s2 turbo that was on there from the beginning..
_________________
1980 924 Turbo
www.instagram.com/garagecedric/ |
|
| Back to top |
|
|
|
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
924 FAQ (Technical)
Could be interesting for someone.
