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  #1  
Old 12-29-2006, 02:31 PM
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carreragt10 carreragt10 is offline
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Nissan GTP ZX-Turbo

Nissan GTP ZX-Turbo - Hi-Res Hide-Out


Nissan GTP ZX-Turbo 1985


This machine took part in the GTP Series of the US IMSA GT Championship. In 1988 G. Brabham won the Driver’s Championship in it. The V6 engine is a modified VG30ET. California-based Electramotive Engineering was responsible for developing and racing the vehicle, winning the Constructor’s Championship in 1989, 1990 and 1991.

Overall length / width / height: 4,800/2,000/1,016mm
Wheelbase: 2,705mm
Tread (front/rear): 1,571/1,530mm
Curb weight: 860kg
Engine: VG30ET (V6, DOHC), 2,966cc
EngineMax. power: Over 478kW (650PS)/8,000rpm
EngineMax. torque: Over 686Nm (70.0kgm)/5,500rpm
Transmission: Weismann (5-speed)
Suspension: Special A-arm & coil (front & rear)
Brakes (front, rear): 13in. 4-pod, ventilated dis
Tires(front): 325/625-415
Tires(rear): 350/680-415
Chassis: Lola T810 (1985 only), Nissan chassis (1986-89)
Attached Images
File Type: jpg Nissan GTP ZX-Turbo 1985 01.jpg (363.2 KB, 129 views)
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Sorry if I cannot express myself correctly, but I don't know English as good as I want, so my answers will probably be the same in many cases.

Last edited by carreragt10; 12-29-2006 at 02:48 PM.
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Old 12-29-2006, 02:33 PM
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Nissan GTP ZX-Turbo 1987



The 1987 Electramotive Nissan GTP ZX-Turbo


History

Electramotive Engineering of California was started by Hughes Aircraft Corporation scientist and motor racing enthusiast Don Devendorf who had run in IMSA’s lower classes with success during the 1970s and early 1980s in modified Datsun/Nissan sportscars. Devendorf’s partner in the venture was his friend, John Knepp.

Electramotive became America’s leading specialists in the sale and preparation of road and racing Nissans, and when the Japanese company decided to enter the GTP category, they naturally approached Devendorf to run the project. First of all, Devendorf bought a Lola T810 rolling chassis which was really a T710 monocoque, very similar to the tubs built for GM for their ‘Corvette GTP’ project. The T810 had slight detail modifications to allow for the Nissan engine, cooling and bodywork installations. The two chassis shared the same suspension installation and physical dimensions.

The John Knepp-developed turbo V6 engines, based upon the production ‘Z’ car engine, were built by Nissan and featured the stock iron block and aluminum heads of the original engine, but Knepp designed, developed and reprogrammed the engine’s sophisticated electronic brain. This engine was named the 3.0-liter VG30 and, in 3.2-liter twin-turbo alloy-block (Electramotive cast) configuration, was also used by Nissan in their March-based Group C cars. The Bodywork of the American GTP car was designed by Yoshi Suzuka.

Appearing first of all at Laguna Seca in May 1985, the Nissan ZX-T was not successful in its first year, but in 1986, at Portland, Geoff Brabham won pole. He and Elliot Forbes-Robinson led the race only to run short of fuel with just two laps left. Stopping for a top-up, they finished third.

The effort was in full swing by 1987, more chassis arriving from Lola and development was ongoing: a Hewland gearbox replacing the original Weismann transmission. At Miami in early 1987, the car won at last. Brabham and Forbes-Robinson took pole and beat Rahal and Mass’ Porsche 962. Electramotive Nissans took four more pole positions but no more victories that season. The Nissans were fast but unreliable.

In 1988, Jim Chapman’s JC Prototypes built a new chassis, designed by Trevor Harris, to take the older car’s running gear and bodywork. Goodyear tires replaced the Bridgestones previously used. IMSA had introduced new regulations to restrict the tremendous horsepower which was beginning to be seen from the turbo-engined GTP cars. Restrictor plates had to be fitted to engine intakes, IMSA reasoning that the horsepower advantage would now go in the favor of the big American V8s. Nothing daunted, John Knepp built an electronically-controlled turbocharger wastegate into the engine management system. This much-copied wastegate was the key to the team’s success. In desperation, in mid-season, IMSA made another rule change, which gave the pushrod cars an extra weight advantage but it made little difference.

Nissan dominated IMSA racing in 1988, much to the dismay of the newly-arrived TWR Jaguars. Knowing that their strength lay in the shorter sprint races, Electramotive avoided the early races at Daytona and Sebring. But after that, Geoff Brabham, using the new chassis ‘8801’, won almost every race, taking nine wins (including eight in a row), usually partnered by John Morton. Nissan won the manufacturers’ title and Geoff Brabham became the IMSA GTP Drivers’ Champion.

1989 was very much a repeat of 1988. A second Chapman chassis ‘8802’ had been built and delivered to Electramotive. The opposition was in disarray, as Porsche were now fading from the scene with the 962, Jaguar were developing their new XJR-10 V6 turbo and Dan Gurney’s Eagle Toyotas were still on the learning curve. Nissan and Brabham were champions again.

Devendorf’s team, by 1990, had been reorganized and re-titled "Nissan Performance Technology, Inc." (NPTI). The lightweight Eagle Toyotas were now showing themselves as the main threat even though Jaguar were providing slightly better opposition, but the ZX-Ts still dominated. Both Nissan and Brabham kept their championships. Halfway through the year, an all-new NPT90 car, still using the VG30 engine, was debuted and ran concurrently with the older car. Just one month after its first race, it was driven to victory at Mid-Ohio in June, by Derek Daly and Geoff Brabham.

NPTI took delivery of two Lola-built Group C R90CKs with VRH35Z engines in 1990 and took them to Le Mans as part of Nissan’s 7-car attack, but both retired.


Specs

Constructor: Electramotive Engineering Incorporated, El Segundo, California, U.S.A.

Chassis Fabricator: Lola Cars Ltd., Glebe Road, St. Peter’s Hill, Huntingdon, Cambridgeshire, England.

Chassis: Lola T810 aluminum honeycomb monocoque with full-length side pontoons (from pedal-box to behind rear bulkhead), designed by Eric Broadley. Ground effects chassis. 120-liter fuel tankage.

Engine: Electramotive VG30 GTP 60-degree V6, blown, water-cooled. Single Garrett TO3 turbocharger. 87.0 x 83.0mm / 2958.9cc. Iron block, aluminum heads. Wet iron liners, 4 plain main bearings. Steel crankshaft. Steel con rods. Ross light alloy pistons. Sealed Power rings. SOHC belt driven. 2 valves / cylinder (44.07mm inlet, 35.05mm exhaust), 1 plug. Compression ratio 8.5:1. MSD Ignition. Bosch injection. Electramotive engine management system. Semi-stressed chassis member. Maximum rpm: 9,000.

Body: Carbon fiber and Kevlar, designed by Yoshi Suzuka. Suspension: Inboard pushrod front suspension and outboard wishbone / coil / damper rear. 13-inch ventilated discs. AP 4-pot calipers outboard. BBS rims – 16 x 11-inch front. 16 x 14-inch rear. Bridgestone tires (Goodyear 1986-on).

Gearbox: Weismann 5-speed; later Hewland VGC 5-speed.
Wheelbase: 2,705mm. Track (f) – 1,600mm / Track (r) – 1,550mm.
Weight: 850 kilograms.


Racing

Championships:
1988 IMSA GTP - Geoff Brabham (Australia)
1989 IMSA GTP - Geoff Brabham (Australia)
1990 IMSA GTP - Geoff Brabham (Australia)
1991 IMSA GTP - Geoff Brabham (Australia)
12 Hours of Sebring:
1989 Geoff Brabham/C Robinson/A Luyendyk
1990 D Daly/B Earl

Camel Continental @ Watkins Glen:
(aka: Watkins Glen 500 kilometres)
1987 Geoff Brabham (Australia)
1988 Geoff Brabham (Australia)
1989 Chip Robinson (USA)
1990 Geoff Brabham (Australia)
1991 Geoff Brabham (Australia)**

IMSA Races:
1987 Miami - Elliot Forbes-Robinson
1988 Road Atlanta - Geoff Brabham
1988 West Palm Beach Street Circuit - Geoff Brabham
1988 Mid-Ohio - Geoff Brabham
1988 Lime Rock Park - Geoff Brabham
1988 Elkhart Lake - Geoff Brabham
1988 Portland - Geoff Brabham
1988 Sears Point - Geoff Brabham
1988 Columbus Street Circuit - Geoff Brabham
1989 Miami - Geoff Brabham
1989 Road Atlanta - Geoff Brabham
1989 Lime Rock Park - Chip Robinson
1989 Mid-Ohio - Geoff Brabham
1989 Elkhart Lake - Geoff Brabham
1989 Heartland Park - Geoff Brabham
1989 San Antonio Street Circuit - Chip Robinson
1989 Sears Point - Geoff Brabham
1990 Miami - Chip Robinson
1990 Road Atlanta - Geoff Brabham
1990 West Palm Beach Street Circuit - Geoff Brabham
1990 Mid-Ohio - Geoff Brabham*
1990 Elkhart Lake - Geoff Brabham*
1991 Heartland Park - Chip Robinson**
1991 Lime Rock Park - Chip Robinson**
1992 Miami - Geoff Brabham***

* - Team car became Nissan Performance NPT90
** - Team car became Nissan Performance NPT91
*** - Team car became Nissan Performance NPT91A

The 1987 Electramotive Nissan GTP ZX-Turbo
Attached Images
File Type: jpg Nissan GTP ZX-Turbo 1987 01.jpg (439.8 KB, 75 views)
File Type: jpg Nissan GTP ZX-Turbo 1987 02.jpg (518.0 KB, 64 views)
File Type: jpg Nissan GTP ZX-Turbo 1987 03.jpg (207.1 KB, 91 views)
__________________
Sorry if I cannot express myself correctly, but I don't know English as good as I want, so my answers will probably be the same in many cases.

Last edited by carreragt10; 12-29-2006 at 02:53 PM.
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  #3  
Old 12-29-2006, 02:37 PM
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carreragt10 carreragt10 is offline
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Nissan GTP ZX-Turbo 1992
Attached Images
File Type: jpg Nissan GTP ZX-Turbo 1992 00.jpg (641.6 KB, 55 views)
File Type: jpg Nissan GTP ZX-Turbo 1992 01.JPG (329.2 KB, 67 views)
File Type: jpg Nissan GTP ZX-Turbo 1992 02.JPG (488.2 KB, 73 views)
File Type: jpg Nissan GTP ZX-Turbo 1992 03.JPG (885.2 KB, 45 views)
File Type: jpg Nissan GTP ZX-Turbo 1992 04.JPG (877.2 KB, 44 views)
File Type: jpg Nissan GTP ZX-Turbo 1992 05.JPG (867.7 KB, 39 views)
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Sorry if I cannot express myself correctly, but I don't know English as good as I want, so my answers will probably be the same in many cases.
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  #4  
Old 12-29-2006, 02:41 PM
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Nissan GTP ZX-Turbo 1992 #2
Attached Images
File Type: jpg Nissan GTP ZX-Turbo 1992 06.JPG (807.4 KB, 38 views)
File Type: jpg Nissan GTP ZX-Turbo 1992 07.JPG (632.0 KB, 25 views)
File Type: jpg Nissan GTP ZX-Turbo 1992 08.JPG (711.1 KB, 33 views)
File Type: jpg Nissan GTP ZX-Turbo 1992 09.JPG (694.0 KB, 38 views)
File Type: jpg Nissan GTP ZX-Turbo 1992 10.JPG (700.9 KB, 28 views)
File Type: jpg Nissan GTP ZX-Turbo 1992 11.JPG (616.8 KB, 33 views)
__________________
Sorry if I cannot express myself correctly, but I don't know English as good as I want, so my answers will probably be the same in many cases.
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  #5  
Old 12-29-2006, 02:44 PM
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Nissan GTP ZX-Turbo 1992 #3
Attached Images
File Type: jpg Nissan GTP ZX-Turbo 1992 12.JPG (727.8 KB, 30 views)
File Type: jpg Nissan GTP ZX-Turbo 1992 13.JPG (719.5 KB, 38 views)
File Type: jpg Nissan GTP ZX-Turbo 1992 14.JPG (428.6 KB, 45 views)
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Sorry if I cannot express myself correctly, but I don't know English as good as I want, so my answers will probably be the same in many cases.
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  #6  
Old 12-29-2006, 05:24 PM
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Thats a very good write up but there one small mistake and that is that the engine is a DOHC 4valve and its a twin turbo. U can see this in the pics that u posted where u can see the cam gears/belts and the turbos. but aside form that great write up and thats for all the pretty pics

Last edited by ___; 12-29-2006 at 05:27 PM.
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  #7  
Old 01-06-2007, 05:38 PM
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carreragt10 carreragt10 is offline
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Nissan GTP ZX-Turbo #6
Attached Images
File Type: jpg Nissan GTP ZX-Turbo 1987 22.JPG (716.6 KB, 61 views)
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Sorry if I cannot express myself correctly, but I don't know English as good as I want, so my answers will probably be the same in many cases.
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  #8  
Old 01-06-2007, 09:46 PM
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ribatejo69 ribatejo69 is offline
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the photo 6 don't copy...
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Old 01-06-2007, 09:56 PM
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That is a very story you have there. I like the later versions visually as opposed to the first version.
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  #10  
Old 06-24-2007, 12:24 PM
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Nissan GTP ZX-Turbo #7
Attached Images
File Type: jpg Nissan IMSA GTP 02.jpg (271.0 KB, 32 views)
File Type: jpg Nissan IMSA GTP 03.jpg (463.5 KB, 48 views)
File Type: jpg Nissan IMSA GTP 04.jpg (611.2 KB, 43 views)
File Type: jpg Nissan IMSA GTP 05.jpg (385.8 KB, 37 views)
File Type: jpg Nissan IMSA GTP 01.JPG (897.3 KB, 46 views)
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Sorry if I cannot express myself correctly, but I don't know English as good as I want, so my answers will probably be the same in many cases.
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  #11  
Old 05-19-2008, 02:52 PM
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Good evening,
I have hardly just joined on this forum partially after the reading of your posts. I am fascinated by Endurance races and especially the 24 hours of Le Mans.... (deeply in 25 days!!!)
I liked a lot your work on GTP ZX-T Nissan which sucked the lifeblood out of the IMSA from 1987 till 1992. At present I examine the period which preceded this adventure : in Japan, in period of the beginning of the JSPC, from 1992 till 1990. Regrettably, I find only not enough information and very few photos. You would have some tracks on the subject.

Thank you in advance. Excuse the quality of my pitiful English. I have appeal to a small translation software.

Looking forward to reading to you.
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Old 05-19-2008, 02:57 PM
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Quote:
Originally Posted by cousin Hub View Post
Good evening,
I have hardly just joined on this forum partially after the reading of your posts. I am fascinated by Endurance races and especially the 24 hours of Le Mans.... (deeply in 25 days!!!)
I liked a lot your work on GTP ZX-T Nissan which sucked the lifeblood out of the IMSA from 1987 till 1992. At present I examine the period which preceded this adventure : in Japan, in period of the beginning of the JSPC, from 1992 till 1990. Regrettably, I find only not enough information and very few photos. You would have some tracks on the subject.

Thank you in advance. Excuse the quality of my pitiful English. I have appeal to a small translation software.

Looking forward to reading to you.
Bienvenue! Si tu veux des informations en français, t'as qu'à m'envoyer un Private Message, et je serais heureux de te transmettre des infos sans que tu es à avoir recours à un software de translation
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  #13  
Old 05-19-2008, 06:55 PM
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Quote:
Originally Posted by cousin Hub View Post
Good evening,
I have hardly just joined on this forum partially after the reading of your posts. I am fascinated by Endurance races and especially the 24 hours of Le Mans.... (deeply in 25 days!!!)
I liked a lot your work on GTP ZX-T Nissan which sucked the lifeblood out of the IMSA from 1987 till 1992. At present I examine the period which preceded this adventure : in Japan, in period of the beginning of the JSPC, from 1992 till 1990. Regrettably, I find only not enough information and very few photos. You would have some tracks on the subject.

Thank you in advance. Excuse the quality of my pitiful English. I have appeal to a small translation software.

Looking forward to reading to you.
Bonjour!

Excuse my pitiful French.
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  #14  
Old 12-01-2009, 04:40 AM
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Nissan GTP ZX-Turbo (NPT-90) #8
Attached Images
File Type: jpg Nissan_NPT-90.jpg (121.0 KB, 21 views)
File Type: jpg NissanGTP-ZXTurbo83-89mia-PaddockLine.jpg (432.3 KB, 24 views)
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Old 07-11-2011, 10:50 AM
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Nissan GTP ZX-Turbo #9
Attached Images
File Type: jpg K070500001.jpg (246.1 KB, 13 views)
File Type: jpg K070500002.jpg (331.9 KB, 13 views)
File Type: jpg K070500003.jpg (314.3 KB, 13 views)
File Type: jpg K070500004.jpg (466.5 KB, 14 views)
File Type: jpg K078060004.jpg (388.6 KB, 16 views)
File Type: jpg K078060005.jpg (342.0 KB, 15 views)
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