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Finally....the '82 rolls
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Rasta Monsta  



Joined: 12 Jul 2006
Posts: 11380
Location: PacNW

PostPosted: Fri Dec 30, 2016 4:41 am    Post subject: Reply with quote

I need to add updated pics of new heat exchanger. . .I'll put it on my todo list.
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  • Red (1987 924S) - Pro44/Spec944
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Mike9311  



Joined: 14 Dec 2004
Posts: 871
Location: Chicago-ish

PostPosted: Fri Sep 29, 2017 11:23 pm    Post subject: Reply with quote

Updates:

Intercooler install
http://www.924board.org/viewtopic.php?p=391256#391256

...And an update that I hope helps people. Fuel pump ran continuously as well as frequency valve. Pulled relay from my S1 and that problem disappeared. Easy enough.

Then after an hour of sitting in a parking lot, near my house thankfully, car failed to start. No fuel pump this time. Once at my house (second time I am pushing this car this week) I swapped in another fuel pump relay. Still no pump. Since I have a pigtail from boost switch, due to its new location on the intercooler, I allowed the connection to touch ground...pump back in action and it fired right up
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1980 931 since 1989
1981 Ideola 931 Club Sport
1982 931 Entwicklungsfahrzeug
1979 924 NA M650 Herausnehmbares Dach
1982 931 Red Resurrection - 951 IC
1982 931 parts car / resurrection?
1980 924 NA (R&D lightweight)
1982 931 wana-be GTR race car
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Mike9311  



Joined: 14 Dec 2004
Posts: 871
Location: Chicago-ish

PostPosted: Mon Feb 05, 2018 1:51 am    Post subject: Reply with quote

Need to put an update I missed here... Fully refurbed with grease fittings added for the poly bushings.


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1980 931 since 1989
1981 Ideola 931 Club Sport
1982 931 Entwicklungsfahrzeug
1979 924 NA M650 Herausnehmbares Dach
1982 931 Red Resurrection - 951 IC
1982 931 parts car / resurrection?
1980 924 NA (R&D lightweight)
1982 931 wana-be GTR race car
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Mike9311  



Joined: 14 Dec 2004
Posts: 871
Location: Chicago-ish

PostPosted: Thu Jan 10, 2019 5:38 am    Post subject: Reply with quote

Trial fitting the billet turbo mount

http://www.924board.org/viewtopic.php?t=40910&postdays=0&postorder=asc&start=75

Like a glove

Found some oil in the intake though so rebuilding the turbo before all this is permanent. Plus a few things need to go out for ceramic coating


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1980 931 since 1989
1981 Ideola 931 Club Sport
1982 931 Entwicklungsfahrzeug
1979 924 NA M650 Herausnehmbares Dach
1982 931 Red Resurrection - 951 IC
1982 931 parts car / resurrection?
1980 924 NA (R&D lightweight)
1982 931 wana-be GTR race car
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Mike9311  



Joined: 14 Dec 2004
Posts: 871
Location: Chicago-ish

PostPosted: Mon Feb 25, 2019 2:54 am    Post subject: Reply with quote

Finally figured out one tiny detail holding me back from testing the billet engine mount bracket. Mounted it yesterday into the rolling test bed that is the '82. Weight wise, with both the billet Turbo Mount and Bracket, its like the original iron bracket plus some never existed. It fit perfectly. No issues.

Got to have everything done a ready for Spring when this Chicago weather finally turns positive. Might pull the torque tube (more on this in a bit) but gas tank is out so is the transmission obviously as well as the turbo.



... and an old picture from 92FortyOne at Ideola's before the Intercooler install


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1980 931 since 1989
1981 Ideola 931 Club Sport
1982 931 Entwicklungsfahrzeug
1979 924 NA M650 Herausnehmbares Dach
1982 931 Red Resurrection - 951 IC
1982 931 parts car / resurrection?
1980 924 NA (R&D lightweight)
1982 931 wana-be GTR race car
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Johann  



Joined: 07 Aug 2016
Posts: 222
Location: Netherlands

PostPosted: Mon Feb 25, 2019 8:46 pm    Post subject: Reply with quote

Seein as the 924 NA and Turbo engine mounts a No Longar Available new, are you going to engineer the arm to allow for engine mounts that are available new?

I know I will be first in line for a set
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morghen  



Joined: 21 Jan 2005
Posts: 8195
Location: Romania

PostPosted: Mon Feb 25, 2019 8:54 pm    Post subject: Reply with quote

Pretty cool, depending on costs, i may be interested in a set as well
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Mike9311  



Joined: 14 Dec 2004
Posts: 871
Location: Chicago-ish

PostPosted: Tue Feb 26, 2019 12:10 am    Post subject: Reply with quote

I am working on some ideas and this one obviously works with the stock and currently available aftermarket. It seems like everyone reports that the aftermarket one, even in street form, is too harsh. Johann, I believe you actually tried and didn't like them? So a better solution would be nice. A sudo active one would be even better
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1980 931 since 1989
1981 Ideola 931 Club Sport
1982 931 Entwicklungsfahrzeug
1979 924 NA M650 Herausnehmbares Dach
1982 931 Red Resurrection - 951 IC
1982 931 parts car / resurrection?
1980 924 NA (R&D lightweight)
1982 931 wana-be GTR race car
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Mike9311  



Joined: 14 Dec 2004
Posts: 871
Location: Chicago-ish

PostPosted: Fri Mar 15, 2019 10:23 pm    Post subject: Reply with quote

Been doing a lot of thinking regarding the actual mount from the original to hydraulic to fully active. Just seeing whats out there in the "suspension style". I know what people here really want especially in their street cars... comfort and performance

In the mean time the 82 is about to get a 2660 update. The turbo from one of the parts cars ate something which has allowed me to test fitment for the new billet wheel. Fits perfectly


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1980 931 since 1989
1981 Ideola 931 Club Sport
1982 931 Entwicklungsfahrzeug
1979 924 NA M650 Herausnehmbares Dach
1982 931 Red Resurrection - 951 IC
1982 931 parts car / resurrection?
1980 924 NA (R&D lightweight)
1982 931 wana-be GTR race car
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CÚdric  



Joined: 27 Aug 2004
Posts: 1994
Location: Sweden

PostPosted: Sat Mar 16, 2019 1:08 am    Post subject: Reply with quote

Not sure why you go with the small wheel, but its nice with the billet wheels. Where did you find it? havent seen any 2660 replacement wheels before?

would be nice if you could measure the area between the blades, that would indicate the max flow, and how it differs between those two. The oem 2660 is not a very good idea as a long term solution for running 1 bar, efficiency is very low and turbo speeds are getting very very high, the billet could definetly flow more though.
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Mike9311  



Joined: 14 Dec 2004
Posts: 871
Location: Chicago-ish

PostPosted: Sat Mar 16, 2019 3:20 am    Post subject: Reply with quote

So to answer your question. Technically this is my fathers car and I am bumping him up slowly even though he has always liked how my 80 had the boost come in later and harder especially with elevated boost. He likes the linear feeling though of this 82

This just got interesting. I wanted to make sure I have my facts straight before giving you the PN which might cause others searching here to go buy something that doesn't work. So we quickly rigged up a test with a bore scope to compare the US S2 2660 wheel to the billet wheel in the stock compressor housing.

The turbo I am using for all this checking came off the crashed '82 parts car which had its tag removed and another rebuild tag hanging off one of the other bolts. Whomever rebuilt this in the past was either dumb or crooked.

The pics revealed they had a 2660 wheel in a 2664 housing. The gap around the wheel is huge

To prove the point I pulled out a K26/8 to show how a gap is supposed to look like. I'll post some pics in a minute plus I'll need to dig up a genuine 2660 housing which I don't collect on purpose since I am a 2664 guy and dislike the 2660 linearity
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1980 931 since 1989
1981 Ideola 931 Club Sport
1982 931 Entwicklungsfahrzeug
1979 924 NA M650 Herausnehmbares Dach
1982 931 Red Resurrection - 951 IC
1982 931 parts car / resurrection?
1980 924 NA (R&D lightweight)
1982 931 wana-be GTR race car
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Mike9311  



Joined: 14 Dec 2004
Posts: 871
Location: Chicago-ish

PostPosted: Sat Mar 16, 2019 3:48 am    Post subject: Reply with quote

Damaged 2660 wheel in damaged 2664 housing


Billet 2660 wheel in Damaged 2664 housing


K26/8 How things should look



Damaged wheel in a confirmed 2664 housing


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1980 931 since 1989
1981 Ideola 931 Club Sport
1982 931 Entwicklungsfahrzeug
1979 924 NA M650 Herausnehmbares Dach
1982 931 Red Resurrection - 951 IC
1982 931 parts car / resurrection?
1980 924 NA (R&D lightweight)
1982 931 wana-be GTR race car
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Carrera RSR  



Joined: 08 Jan 2010
Posts: 2003
Location: Somerset, UK

PostPosted: Sat Mar 16, 2019 4:13 am    Post subject: Reply with quote

2664 compressors I believe are more plentiful in the US as you guys mostly had K26 2664 4.10 turbos on your cars. In the UK many trashed turbos were replaced with K26 2660 6.10 or 4.10. I had to source a 2664 wheel and housing from the USofA as there were none this side of the pond.

Personally and I believe Cedric will concur, the 2664 with a #6 turbine would be the best option for the rebuild where possible. A #4 wouldn't be a big issue if not chasing higher 1.0bar++ boosts. the 2664 wheel would give you best compressor options from low to high boost and low to high rpm spool.
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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
Now www.924board.org/viewtopic.php?t=34690
Then www.924board.org/viewtopic.php?t=31252
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Mike9311  



Joined: 14 Dec 2004
Posts: 871
Location: Chicago-ish

PostPosted: Sat Mar 16, 2019 4:51 am    Post subject: Reply with quote

Carrera RSR wrote:
2664 compressors I believe are more plentiful in the US as you guys mostly had K26 2664 4.10 turbos on your cars. In the UK many trashed turbos were replaced with K26 2660 6.10 or 4.10. I had to source a 2664 wheel and housing from the USofA as there were none this side of the pond.

Personally and I believe Cedric will concur, the 2664 with a #6 turbine would be the best option for the rebuild where possible. A #4 wouldn't be a big issue if not chasing higher 1.0bar++ boosts. the 2664 wheel would give you best compressor options from low to high boost and low to high rpm spool.


I have one 6.10 housing but plenty of 2664 / 4.10 but most of my 4.10's are cracked. One 4.10 for sure is not. Those 6.10's are hard to get. The only reason I got this one is because I speak German

I think the debate here has swung into high gear to decide what to do... Thanks guys...your input is always appreciated
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1980 931 since 1989
1981 Ideola 931 Club Sport
1982 931 Entwicklungsfahrzeug
1979 924 NA M650 Herausnehmbares Dach
1982 931 Red Resurrection - 951 IC
1982 931 parts car / resurrection?
1980 924 NA (R&D lightweight)
1982 931 wana-be GTR race car
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CÚdric  



Joined: 27 Aug 2004
Posts: 1994
Location: Sweden

PostPosted: Sat Mar 16, 2019 5:15 am    Post subject: Reply with quote

Wow, that clearance! That compressor must have reved up to the moon to reach target boost, incredible that someone did that and thought it was fine.
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