STI Group N Project STI, in order to assure the growth of its business in the FIA Group N market, which became the main category for the firm in world rallying, started its Group N Project in 2003. General Manager George Donaldson (U.K.), as the representative for STI, took charge of such activities as data-gathering, business operations and motor sport in Europe. Mainly focused on the FIA Production car World Rally Championship (P-WRC), regional FIA rally championships and the domestic rally championships of each country, the role supports the activities of entrants participating with the IMPREZA. SUBARU P-WRC award を設定
From 2004, STI ‘Base Teams’ were set up, with the primary objective TMR URT of developing the motor sport side, This concept tackled enlarging the Group N business, including sales promotion activities, which were strengthened through British firm Prodrive and Tommi Makinen Racing of Finland. The organisation has continued to grow, becoming PD BPR a worldwide effort with the recent addition of Argentinean outfit Barattero, Uspenskiy Rally Tecnica from Russia, Stohl Racing of Austria, and Motor Image from Singapore. From 2005, when the old 2008 FIA Group N Rally Car model IMPREZA WRX STI spec C was introduced, and in conjunction with the base teams, more than 500 units of the car (2005, 2006, 2007 STOHL MIE models) were sold.
In conjunction with STI, the base teams have built up the infrastructure IMPREZA Rally Base Car Sales Result of the Group N business. Besides assisting in the development of 2007 200 competition parts, they have taken charge of customer management and act as the sales window of rally cars in specific areas. In addition, supply 2006 150 of rally parts (safety devices and guards etc) to customers has been 2005 196 undertaken by the base teams. For the 2008 season, STI will broaden the base team concept, allowing 2004 174 supply of the new style IMPREZA WRX STI to choosers from all over the 2003 60 world, continuing their support for SUBARU IMPREZA users and entrants. 2002 39 units
■ STI Group N Base Team list as of October 2007 Phone Company Name Address Contact Person e-mail Banbury Oxfordshire OX16 3ER +44 (0) 1295 754 126 Prodrive Motorsport Ltd Mr. Alan McGuinness England United Kingdom [email protected]
+358 (0) 14 211 240 Tommi Makinen Racing Oy Tervamaantie 9 41120 Puuppola Finland Mr. Esko Reiners info@tommimakinenracing .fi
Rute Nacional Nro 36 s/n +54 (0) 3571 471062 Baratec S.A. Mr. Luis Gius Almafuerte Cordoba Argentina [email protected]
+7 (0) 495 258 9800 Uspenskiy Rally Tecnica 29, Rechnikov street Moscow 115142, Russia Mr. Sergey Miloenko [email protected]
+43 (0) 2249/28050 Stohl Racing GmbH Eurostrasse 5 2301 Grossenzersdorf Austria Mr. Gunther Aschacher [email protected]
+65 (0) 6417 0333 Motor Image Enterprises Pte Ltd 19, Lorong 8 Toa Payoh 319255 Singapore Mr. Tan Keng Hock [email protected]
※ For requests and enquiries on the IMPREZA WRX STI Group N Rally Car, please refer to the base teams above.
■ STI Group N information website www.subaru-sti.co.jp/grn/
October 24,2007 The IMPREZA WRX STI is the World Standard in Group N Rally Cars ■ New IMPREZA WRX STI Rally Performance Comparison (reference data) At STI, a long period of time has gone into the development of the new style WRX STI Group N Rally Car. An accumulation of knowhow The new IMPREZA WRX STI features SUBARU’s original symmetrical AWD chassis layout from the old model, combined with the best use of an alliance and the cooperation of suppliers from around the world has resulted in a combined with their high-output, horizontally-opposed 2-litre turbo engine in this new greater foundation for the development of the new car and its parts. Development tests were repeatedly carried out in cooperation with 5-door sports car. The technology developed by Subaru through its motorsport activities special motor sports entities, the so-called ‘STI base teams’, on rough gravel stages in South America and on high-speed, twisty sections is used in abundance in the chassis of this new model. in Northern Europe – the new model IMPREZA WRX STI showing high-level potential and actual proof of the car’s speed and ability. In addition, the STI Group N team has kept in close contact with Fuji Heavy Industries’ (FHI) road car development team throughout the development of the 2008 Group N rally car. IMPREZA Group N 2008 Model and previous model comparison tests conducted on Argentine and Finnish gravel tests. In October 2007, the STI Group N category base car is scheduled for release to coincide
In the Best Time comparison, the new model IMPREZA excels, beating In the Best Time comparison, the new model IMPREZA excels, beating the old model by 0.3 seconds per kliometre. the old model by 0.3 seconds per kliometre.
＜ Average speed: ＞ ＜ Average speed: ＞ New model IMPREZA WRX STI: 88.0km/h New model IMPREZA WRX STI: 112.7km/h Previous model：86.9km/h Previous model：112.1km/h
New IMPREZA WRX STI Competition Rally Parts ※ FIA Group N homologtion of the new IMPREZA WRX STI is currently being prepared, with the aim of receiving recognition on January 1st 2008. ■ Brake Kit (VO) Large-capacity type 4-pot caliper for tarmac use ・ 2-way rotor for gravel use. Adopted by results-proven British firm ■ Main features and rally performance of the new IMPREZA WRX STI AP Racing specifically prepared for new model.
★ Enhanced chassis performance Improved turn-in through development of front suspension geometry ・ Variable propositioning valve Improvement of straightline stability through increased wheelbase Front ・ Featuring optimisation and stability improvement ・Increased road-holding through impementation of double wishbone type rear suspension ★ Acknowledgement of more powerful engine ・Introduction of AVCS (Active Valve Control System)、electronically-controlled throttle ・Adoption of increased-strength conrods Pillow-ball Top Mount Pillow-ball top mount which further improves strength and Evolution of electronically-controlled devices include: ★ part life based on data from the old model ・Three-mode SI drive that better utilises torque characteristic of engine Width1795mm ・Multi-mode DCCD (Driver’s Control Differential) （＋55mm）
Front Track1530mm A shortened rear overhang, change in weight distribution to the front （＋40mm） Rear Rubber Bush and rear of the car, plus optimization of the centre of gravity and roll Rear Track1540mm Suspension bush and engine gearbox mount with centre contribute to the improvement of the handling of the vehicle. （＋45mm） strengthened and hardened-type rubber Font Overhang Wheel Base：2625mm（＋85mm） Rear Overhang An increased competitive edge is the aim for this new model. 960mm（－15mm） Overall Length 4415mm（－50mm） 830mm（－120mm）
Drive Shaft Specifications and Dimensions With an increased drive shaft joint size, durability is ■ increased substantially. Chassis: SUBARU CBA-GRB Model: 5-door AWD 6MT Engine Bay Dimensions (mm): Length: 4415 x Width: 1795 x Height: 1475 x wheelbase: 2625 Strengthened gear shift lever Reinforcement of the operational parts of the gear shift lever Unladen weight (kg): 1470 means greater reliabilty even in the rigours of on-event Engine: EJ20 2.0 litre DOHC 16 valve AVCS turbo competition. Engine output: Maximum output: 227 k-W(308ps) / 6400 rpm Max torque 422 N m(43.0kg-m) / 4400 rpm ・ L.S.D with dual movement selection characteristics (Front: 3 types, Rear: 3 types) will be available Fuel tank: 60 litres in January, 2008. Engine Control Unit (ECU), DCCD (Driver’s Control Differential) control unit、 Steering: Rack & Pinion 13 : 1 FIA Group N spec φ 32 Engine restrictor etc delivery schedule will start in December. There will also be many other competition-specific parts available at that time. Please refer to the STI website Suspension: Front: Strut, Rear: Double Wishbone for more detailed information. Brakes: Front: Ventilated Discs, Rear: Ventilated Discs Cabin