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Dutch924-racer
Joined: 23 Jul 2007
Posts: 1081
Location: The Netherlands
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 Posted: Mon Mar 31, 2008 4:50 pm Post subject: Building a Carrera GT engine |
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I want to build an engine like the carrera GT one.
I don't need an exact copy of one but I do want to get with around the 200 bhp out of it.
I use an S2 with 931 DITC engine as a base
- K27 Turbo 5327-970-7007
- boost 0,7 / 0.8 bar
- GT DITC box
- intercooler
- S1 7,5:1 pistons (I know original is 8:1)
- sport exhaust system (Ansa)
What do I need more ?
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937 trackday car
Series 2 engine
951S turbo and intercooler
Fast road camshaft
Forge recirculation valve + boost controller
Last edited by Dutch924-racer on Thu Dec 19, 2019 5:15 am; edited 1 time in total |
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morghen
Joined: 21 Jan 2005
Posts: 9105
Location: Romania
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| Posted: Mon Mar 31, 2008 5:30 pm Post subject: |
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did the CGT use a K27 ? 
where did you get the GT DITC ? i want one too.
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924guy
Joined: 29 Dec 2003
Posts: 2088
Location: Port St. Lucie, FL
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| Posted: Mon Mar 31, 2008 11:21 pm Post subject: |
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i really dont know, but i would think that with those upgrade you could already reasonably expect to come in at least 200-210 range. an ic alone is generally good for 20% nominal. sacrificing a point in compression takes it down a bit, but should be more than compensated for with the spring and turbo upgrades, more durable as well i would guess...
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Eric
78 924
82 931 SE "smokey"
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NSA
Joined: 22 Mar 2007
Posts: 84
Location: London
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| Posted: Tue Apr 01, 2008 10:33 pm Post subject: |
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Some 924 Carrera GT engine spec is here:
www.924gt.com/specification.html
Full technical specs and parts catalogue downloads are in the Servicing section.
The main differences are the pistons, which were 86.5mm and were forged, not cast; the turbo, which is also slightly different to the 931; and obviously the intercooler. I was reading over the weekend that the electronic ignition is also unique (Siemens?), but I need to check this. |
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Dutch924-racer
Joined: 23 Jul 2007
Posts: 1081
Location: The Netherlands
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| Posted: Wed Apr 02, 2008 1:46 am Post subject: |
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As I look in Pet the injectors and wastgate are also the same as the 931 ones.
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937 trackday car
Series 2 engine
951S turbo and intercooler
Fast road camshaft
Forge recirculation valve + boost controller |
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Dutch924-racer
Joined: 23 Jul 2007
Posts: 1081
Location: The Netherlands
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| Posted: Wed Apr 02, 2008 1:46 am Post subject: |
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| morghen wrote: |
where did you get the GT DITC ? i want one too. |
Make me an offer 
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937 trackday car
Series 2 engine
951S turbo and intercooler
Fast road camshaft
Forge recirculation valve + boost controller |
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morghen
Joined: 21 Jan 2005
Posts: 9105
Location: Romania
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| Posted: Wed Apr 02, 2008 2:54 am Post subject: |
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what.. you have more? dunno...ask something for it and lets play.
but anyway...did you test it...does it make any difference?
btw...my ditc(H) box is siemens...i tought they all were siemens.
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Dutch924-racer
Joined: 23 Jul 2007
Posts: 1081
Location: The Netherlands
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| Posted: Wed Apr 02, 2008 3:58 pm Post subject: |
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DITC box is always from Siemens
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937 trackday car
Series 2 engine
951S turbo and intercooler
Fast road camshaft
Forge recirculation valve + boost controller |
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NSA
Joined: 22 Mar 2007
Posts: 84
Location: London
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| Posted: Tue Apr 15, 2008 7:07 am Post subject: |
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| My DITC box is Siemens, but it's got a 937 part number, so the timing map must be slightly different to the 931. |
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gegge
Joined: 27 Jul 2007
Posts: 1124
Location: Sweden
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| Posted: Thu Apr 17, 2008 6:14 pm Post subject: |
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| morghen wrote: | did the CGT use a K27 ?
where did you get the GT DITC ? i want one too. |
There was one for sale on german Ebay one month ago. Noticed it was a 937 too late 
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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
Posts: 9105
Location: Romania
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| Posted: Thu Apr 17, 2008 7:16 pm Post subject: |
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for how much did it sell ?
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gegge
Joined: 27 Jul 2007
Posts: 1124
Location: Sweden
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| Posted: Thu Apr 17, 2008 7:44 pm Post subject: |
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| morghen wrote: | | for how much did it sell ? |
Donīt remember but it was for peanuts. 937 was written on the top:
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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
Posts: 9105
Location: Romania
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| Posted: Thu Apr 17, 2008 9:58 pm Post subject: |
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hmm...do any of you know if the transistorial unit...the black one on the bottom of that picture...makes any difference performancewise?
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Dutch924-racer
Joined: 23 Jul 2007
Posts: 1081
Location: The Netherlands
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| Posted: Fri Apr 18, 2008 1:35 am Post subject: |
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black unit is always the same 931/ 937.
I have seen the DITC 937 sell for 1000 dollar on ebay.com
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937 trackday car
Series 2 engine
951S turbo and intercooler
Fast road camshaft
Forge recirculation valve + boost controller
Last edited by Dutch924-racer on Fri Apr 18, 2008 5:18 am; edited 1 time in total |
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morghen
Joined: 21 Jan 2005
Posts: 9105
Location: Romania
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| Posted: Fri Apr 18, 2008 4:24 am Post subject: |
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what...the black units? wtf?
mine got bust and in a desperate moment i replaced it with an VW/AUDI unit that had the same partnumber except the last digit...the car runs great even now.
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