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UT-CIS Sticky
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Rasta Monsta  



Joined: 12 Jul 2006
Posts: 11378
Location: PacNW

PostPosted: Thu Aug 12, 2010 7:51 am    Post subject: Reply with quote

Nein37 wrote:
Also... I bet your engines grenade before mine.


I'll take that bet.

And, I was serious about your factory WUR. . .you're risking rupturing the diaphragm. . .under boost. . .at high RPM. . .
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Toofah King Bad

  • Red (1987 924S) - Pro44/Spec944
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Nein37  



Joined: 29 Dec 2009
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Location: New London, CT

PostPosted: Thu Aug 12, 2010 12:14 pm    Post subject: Reply with quote

Is the GTS WUR different from the stock 931 WUR?
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1981 931 CGT replica, OEM CGT intercooler, .8 BAR WG spring, GTS Headlights, Innovative Wide band A/F, A/C delete, 16" Fuchs, Weltmeister 200lb lowering springs, Bilstein HDs front, Koni Sport rears.
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Rasta Monsta  



Joined: 12 Jul 2006
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Location: PacNW

PostPosted: Thu Aug 12, 2010 1:16 pm    Post subject: Reply with quote

Just telling ya what the FSM says, my brother. If you like the factory WUR, Brian Leask can rebuild it with a stronger diaphragm. Seems like reasonable insurance to me.


rasta

P.S. If you do this, the bet is off.
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Nein37  



Joined: 29 Dec 2009
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PostPosted: Thu Aug 12, 2010 1:50 pm    Post subject: Reply with quote

Thanks for the heads up Rasta, I didn't realize the adjustable units utilized a different diaphragm. BTW I'm only running 12psi currently... I've decided there is no good reason to push the engine too hard.
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1981 931 CGT replica, OEM CGT intercooler, .8 BAR WG spring, GTS Headlights, Innovative Wide band A/F, A/C delete, 16" Fuchs, Weltmeister 200lb lowering springs, Bilstein HDs front, Koni Sport rears.
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stevekat  



Joined: 19 Jan 2008
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PostPosted: Fri Aug 13, 2010 2:25 pm    Post subject: Reply with quote

Our engines don't grenade, they Chernobyl. I think you'll be happy with your UTCIS once you get a properly working unit in place.
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"Never get out of the boat. Absolutely goddamn right. Unless you are goin' all the way."

Gone to new home: '81 924T, US version, CGT Intercooler, UTCIS-PT, Euro DITC, Greddy Trust MBC, Forged Fuchs Flat Dish 6's, Factory Recaro's.
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gegge  



Joined: 27 Jul 2007
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PostPosted: Sat Aug 14, 2010 12:08 am    Post subject: Reply with quote

Nein37 wrote:
Is the GTS WUR different from the stock 931 WUR?


The GTS didnīt have a WUR. Only a simple vavle with a high or low setting. Very digital
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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
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morghen  



Joined: 21 Jan 2005
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PostPosted: Sat Aug 14, 2010 4:13 am    Post subject: Reply with quote

gegge wrote:
Nein37 wrote:
Is the GTS WUR different from the stock 931 WUR?


The GTS didnīt have a WUR. Only a simple vavle with a high or low setting. Very digital


wow...could we replicate that thing? i'm interested...i plan to run 1 bar as standard boost and i really dont want the WUR to crap on my engine.
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Ruby-sh 924
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gegge  



Joined: 27 Jul 2007
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PostPosted: Sat Aug 14, 2010 6:21 am    Post subject: Reply with quote

Easy. But you have to choose; milage or power.

Buy a 3 bar (adjustabe?) fuel pressure regulator and you are close.

morghen wrote:
gegge wrote:
Nein37 wrote:
Is the GTS WUR different from the stock 931 WUR?


The GTS didnīt have a WUR. Only a simple vavle with a high or low setting. Very digital


wow...could we replicate that thing? i'm interested...i plan to run 1 bar as standard boost and i really dont want the WUR to crap on my engine.

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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
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Rasta Monsta  



Joined: 12 Jul 2006
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PostPosted: Mon Aug 16, 2010 11:51 am    Post subject: Reply with quote

gegge wrote:
Buy a 3 bar (adjustabe?) fuel pressure regulator and you are close.


This is an interesting idea. You could have an old-skool type choke. . .it would just have to swing from 2.5 to 3.5 BAR.
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gegge  



Joined: 27 Jul 2007
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PostPosted: Mon Aug 16, 2010 5:35 pm    Post subject: Reply with quote

Sorry, I was wrong. The GTS has a WUR located on top of the intake manifold.

Cold: 2,2 bar
Warm: 3,65 bar
Warm at WOT: 2,6 bar

gegge wrote:
Nein37 wrote:
Is the GTS WUR different from the stock 931 WUR?


The GTS didnīt have a WUR. Only a simple vavle with a high or low setting. Very digital

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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
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morghen  



Joined: 21 Jan 2005
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PostPosted: Mon Aug 16, 2010 6:53 pm    Post subject: Reply with quote

ok then...how does the GTS WUR differ from the 931 WUR?
does it have a better diaphragm? does it work in a different way?


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Ruby-sh 924
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Nein37  



Joined: 29 Dec 2009
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PostPosted: Mon Aug 16, 2010 10:45 pm    Post subject: Reply with quote

morghen wrote:
ok then...how does the GTS WUR differ from the 931 WUR?
does it have a better diaphragm? does it work in a different way?



Inquiring minds want to know.
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1981 931 CGT replica, OEM CGT intercooler, .8 BAR WG spring, GTS Headlights, Innovative Wide band A/F, A/C delete, 16" Fuchs, Weltmeister 200lb lowering springs, Bilstein HDs front, Koni Sport rears.
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Rasta Monsta  



Joined: 12 Jul 2006
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PostPosted: Mon Aug 16, 2010 11:35 pm    Post subject: Reply with quote

Pelican shows the 931606107X part available, subject to core charge. Only $967.50!
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Toofah King Bad

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morghen  



Joined: 21 Jan 2005
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PostPosted: Tue Aug 17, 2010 12:27 am    Post subject: Reply with quote

ha ! nice price.

however we would want the 105X as thats pre 81 and thats for the high boost applications...however..they have the same part numbers..and that means chances are the WUR is identical for the 931 and 937/GTS
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Rasta Monsta  



Joined: 12 Jul 2006
Posts: 11378
Location: PacNW

PostPosted: Tue Aug 17, 2010 1:09 am    Post subject: Reply with quote

Oops, misread the PET, as did you, Morghen. I believe the CGT motor is the M31.05, which does appear to use the "standard" 931 WUR.

Per our Tech Section, the GTS and GTR motors were M31.06 & M31.07, not appearing in the PET page shown.

A more likely candidate for the GTS would be the 930 part, also horizontally mounted.
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