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Old 03-02-2007, 07:31 AM   #1
e6tme
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Default Subaru Impreza WRC2007 Unveiled!

from swrt.com:

Quote:
The Subaru World Rally Team has today unveiled the latest evolution of its rally challenger, the Impreza WRC2007, which will make its competitive debut on Rally Mexico (March 9-11) in the hands of Petter Solberg/Phil Mills and Chris Atkinson/Glenn Macneall.

As with previous incarnations of the iconic rally car, the Impreza WRC2007 is the result of a close collaboration between the teams of engineers and designers within Fuji Heavy Industries Ltd and Subaru Tecnica International (STI) in Japan and the Subaru World Rally Team in England.

The creation of the WRC2007 is a sign of Subaru’s ongoing commitment to the World Rally Championship as a way of proving the superior performance, reliability and safety of the Impreza model. Although the latest World Rally Car is outwardly similar to its predecessor, a number of key engineering improvements have justified the production of a new car for the remainder of this season.

Steve Farrell, director of engineering for the Subaru World Rally Team, explains: “The targets were to produce a car that has a more responsive front end with better traction and more balanced tyre wear, particularly on longer stages. To achieve that, we have applied a different philosophy into areas such as weight distribution, suspension geometry and differential set-ups. We also have new dampers to improve road-holding and traction.

“The car also has a different radiator and intercooler pack. We made an evolution in the middle of last season and, with the benefit of the new homologation, we’ve been able to make a further step on that. We have simplified the layout, which has improved the air flow, made the front end of the car easier to service and lost some weight.

“Externally, the differences are relatively subtle. The front bumper has been restyled to suit the new radiator pack and the bonnet vents are different – we have twin side exits on the bonnet this time rather than one central one.”

Richard Taylor, Subaru World Rally Team managing director adds: “Since the latter part of last year we’ve worked very closely with Subaru in Japan to look at certain specific areas of the 2006 car and bring the new version to fruition as quickly as possible. This season we have started to work with BFGoodrich and Mexico will be our first gravel event with its tyres, so we still have a considerable amount of learning to do in that respect.”

As the basis of a rally winning machine, few cars can match the competitive pedigree of the Impreza. First launched in 1992, the road car has developed in tandem with its rallying counterpart and over the last 13 seasons, the Impreza has scored 46 WRC victories and lessons learned on the rally stages have been fed back into the production model.

Like the road-going Impreza, at the heart of the rally car are two key parts of the Subaru philosophy, namely the Horizontally-opposed engine and the trademark Symmetrical AWD (All-Wheel-Drive). Through the work of STI and the Subaru World Rally Team, Subaru has established a two-way feedback process which complements both the road and rally car programmes.

Shigeo Sugaya, manufacturer principal, engineering, for the Subaru World Rally Team, says: “The collaboration between Subaru in Japan and England has worked extremely well to deliver the WRC2007 in a very short timeframe. Last autumn, engineers in Japan and England shared the idea before actual work started on both sides. Then development work was initiated as a joint project between the two teams.

“Our engineers in Japan are responsible for two main areas: the first is designing the bodyshell, including aerodynamics, and the other is improving the power unit. The engine itself contributes to further improving drivability in the middle to low speed range, which worked effectively in the Impreza WRC2006. As with previous designs, the engine is an all-aluminium construction, but the further use of light-weight materials means it is even lighter than before.

“On top of that, we work very closely with the Subaru World Rally Team engineers on specific projects and offer general support as and when it is needed. We also set up smaller groups including engineers from both Japan and England to develop areas such as the suspension or aerodynamics. The groups communicate directly, while my role is to oversee the success of each project. The WRC2007 does not represent a radical change for the team, instead we have made small evolutions in several areas.”

The team has used the WRC2006 for the first three rallies of the 2007 season and has scored points on each outing. In parallel, the new car has been undergoing testing on gravel roads in Italy and Spain. The two Subaru World Rally Team crews will drive the Impreza WRC2007 for Mexico and the subsequent 12 rounds of the WRC.

Today two Subaru Impreza WRC2007s were due to set off from the Subaru World Rally Team’s headquarters in Banbury, England to embark on the 5000-mile trip to Mexico in preparation for their debut in the World Rally Championship.







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Old 03-02-2007, 07:32 AM   #2
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Side bonnet vents for the win!
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Old 03-02-2007, 08:34 AM   #3
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No kidding! Where have the bonnet vents been these last 6 years??

Interesting that in this intake configuration, they're not using the reverse manifold.

Looking forward to a season on new tires... should be good.

Oh, I guess they won't be losing any "mufflers"* this year.


* .. catalytic converters actually, but you know what I mean.
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Old 03-02-2007, 08:42 AM   #4
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Ewww look at that fender gap! (I'm kidding, I'm kidding)

The engine bay shot is interesting.
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Old 03-02-2007, 08:58 AM   #5
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Can anybody give more details about the underhood configuration (other than the obvious)?
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Old 03-02-2007, 08:59 AM   #6
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I wonder what Petter will break first.
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Old 03-02-2007, 08:59 AM   #7
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So the hood went back to the gc8 roots. Recycling an old concept is hardly an engineering marvel. But it does look a little better. I think they could be a little bigger.

The air cleaner is directly above throttle body and under the scoop... interesting.

And I like the new FMIC and pipe routing. Hopefully it's going counter-clockwise in flow so the intake charge air isn't being re-heated by the turbo after the intercooler. I always thought the traditional clockwise route that aftermarket companies use was poorly thought-out.
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Old 03-02-2007, 09:17 AM   #8
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Ya, I'm liking the 07's fascia more than the 06. Hopefully, our luck will change for the better too.



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Old 03-02-2007, 09:30 AM   #9
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i like the exhaust pipe going through the bumper.
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Old 03-02-2007, 09:37 AM   #10
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Quote:
Originally Posted by WagonMonster View Post
I wonder what Petter will break first.
Depends on which rock he hits.
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Old 03-02-2007, 09:59 AM   #11
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Engine is going to die in Argentina water splashes...
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Old 03-02-2007, 10:07 AM   #12
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Quote:
Originally Posted by subarurabbit View Post
Engine is going to die in Argentina water splashes...
thanks for pointing that out! You know, because Prodrive would've never thought of that without you....
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Old 03-02-2007, 10:16 AM   #13
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I'll take one
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Old 03-02-2007, 10:19 AM   #14
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seems like the 07 car no longer has the roof vane or the rear diffuser
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Old 03-02-2007, 10:51 AM   #15
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Quote:
Originally Posted by Porter View Post
Side bonnet vents for the win!
Could this be a trait to be carried over into the 08 USDM STI? What about the muffler hole as well?? Car looks much meaner IMO.
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Old 03-02-2007, 11:21 AM   #16
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WTF is with the engine bay changes and the muffler out the bumper!?
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Old 03-02-2007, 12:10 PM   #17
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Quote:
Originally Posted by skunkfifty View Post
thanks for pointing that out! You know, because Prodrive would've never thought of that without you....
They eventually did think of that, after it died in the water spashes. Repeatedly. Thier answer the next year: slow down. Others go flying through and the Subaru's have to slow. Not exactly the answer a driver wants to hear...

Tom
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Old 03-02-2007, 12:17 PM   #18
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Quote:
Originally Posted by WagonMonster View Post
I wonder what Petter will break first.
Door handle, unless someone opens it for him.
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Old 03-02-2007, 12:22 PM   #19
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cold air intake FTW
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Old 03-02-2007, 12:23 PM   #20
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Quote:
Originally Posted by SlideWRX View Post
They eventually did think of that, after it died in the water spashes. Repeatedly. Thier answer the next year: slow down. Others go flying through and the Subaru's have to slow. Not exactly the answer a driver wants to hear...

Tom
I guess we better start praying for all water crossings to dry out during the WRC rallies
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Old 03-02-2007, 12:27 PM   #21
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Quote:
“The targets were to produce a car that has a more responsive front end with better traction and more balanced tyre wear, particularly on longer stages. To achieve that, we have applied a different philosophy into areas such as weight distribution, suspension geometry and differential set-ups.
So...they removed more of the Impreza's built-in antilift. But for those of us who want to drive the car according to SCCA rules, we have to keep it.
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Old 03-02-2007, 12:45 PM   #22
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sick ftw
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Old 03-02-2007, 01:06 PM   #23
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the Impreza WR car will change the way the engine bay look depending on the rally, so the intake filter is not always in the same place ...
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Old 03-02-2007, 01:07 PM   #24
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Any way you dress it, it is still a 7 year old platform, compared to the new Focus & even newer C4.

Quote:
Originally Posted by lunatictokyo View Post
the Impreza WR car will change the way the engine bay look depending on the rally, so the intake filter is not always in the same place ...
Bring back the snorkles!
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Old 03-02-2007, 01:08 PM   #25
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