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Kaptain
04-09-2005, 12:46 AM
The new XJ's aluminum chassis is 40 % lighter and 60 % stiffer than if it were steel.

The long-wheelbase 2005 XJ weighs 53 pounds more than than normal XJ yet is 5 inches longer.

"The complete body with weighs 650 pounds compared with an estimated 1,058 pounds for the same car in steel, 952 pounds for a Mercedes-Benz S-class, and 955 pounds for a 7-series BMW."

- from The Inside Guide to the all-new aluminum Jaguar XJ by Automobile Magazine

http://www.keycast.com/keycast/jaguar/xj/USNewXJ_LWB/default.asp?ref=noref&detect=1&flashversion=7&jsenabled=1

http://www.in.gr/auto/parousiaseis/foto_big/in_Jaguar_AluminumMonocoqueConstr.jpg

http://www.theraceforum.com/images/forum/2915-64-1.jpg

http://www.theraceforum.com/images/forum/2915-66-1.jpg

http://www.canadiandriver.com/articles/jk/images/04jagxjbody.jpg

http://www.theraceforum.com/images/forum/2915-32-1.jpg

http://www.theraceforum.com/images/forum/2915-32-2.jpg

http://www.theraceforum.com/images/forum/3041-19-1.jpg

http://www.theraceforum.com/images/forum/3041-20-1.jpg

http://www.theraceforum.com/images/forum/3041-25-2.jpg

http://www.theraceforum.com/images/forum/3041-24-1.jpg

ZF 6 speed automatic transmission

http://www.theraceforum.com/images/forum/3041-25-1.jpg

aluminum suspension and brakes (Brembos for the XJR and Super V8)

http://www.theraceforum.com/images/forum/3041-22-2.jpg

http://www.theraceforum.com/images/forum/3041-22-1.jpg

XJ's air suspension (standard)

http://www.theraceforum.com/images/forum/3041-21-1.jpg

Here is Jaguar's 4.2 liter 390 hp supercharged V-8.

http://www.theraceforum.com/images/forum/3041-21-2.jpg

http://www.jaguarusa.com/us/en/vehicles/r-performance/Overview/overview_1CC97284-D0AF-43F4-BB5B-8649EEA8FE4F_462x669.jpg

http://www.in.gr/auto/parousiaseis/foto_big/in_Jaguar_AJ34_Supercharged_V8.jpg

The 2005 Jaguar Super V8 weighs over 800 pounds less than a BMW 760Li. It is shown below.

http://www.theraceforum.com/images/forum/2915-46-1.jpg

http://automobilemag.com/reviews/0409_jaguar_super_v8_h2.jpg

The blue 2004 XJR is finished in "Zircon" with the optional 20 inch BBS wheels.

An all-leather steering wheel is available for the XJ as an accessory.

http://fast-autos.net/jaguar/04xjr20.jpg

http://www.robbreport.com/Articles/Wheels/2004-Articles/Special-Themes/Car-of-the-Year-2004/asset_upload_file817_7449.jpg

The Jaguar Advanced Lightweight Coupe shows what the next XK might look like. The next XK will have to comply with new European pedestrian safety regulations.

It will use the new XJ's aluminum chassis.

Many people say that the Jaguar Advanced Lightweight Coupe looks too much like an Aston Martin. One thing I notice about the Jaguar is that its tail tapers off like the current XK while the trunks of new Aston Martins are flat and have that crease around them or have a spoiler like that of the 2006 Aston Martin V8 Vantage.

Here is a link to pictures of it. The link shows a new XK8, but it says it is an XKR.

http://www.fast-autos.net/features/05naias/jaguar/index.html

http://www.fast-autos.net/features/05naias/jaguar/4.jpg

I hope Jaguar backs the next XK in racing. Jaguar won the manufacturer's championship in the 2004 Trans-Am Series. Rocketsports Racing built this XKR.

http://www.theraceforum.com/images/forum/2915-57-1.jpg

http://www.theraceforum.com/images/forum/2915-57-2.jpg

http://galleries.wheels24.co.za/cars/Jaguar/wallpaper/large/11.jpg

These two S-Types remind me of the 2001 Jaguar R Coupe and the 2003 Jaguar RD-6. The next Jaguar S-Type will likely use the new XJ's aluminum chassis.

The third car shown is the 2003 Jaguar RD-6 concept.

http://www.jaguarracing.wz.cz/Ruzne/s2007_2.jpg

http://www.theraceforum.com/images/forum/2915-40-1.jpg

http://www.fast-autos.net/jaguar/rd619.jpg

I wish Jaguar would drop the X-Type and build the F-Type from a few years ago. Give it an aluminum chassis, a V-8 engine, a manual transmision, and call it the "XK 320."

Tell Jaguar to build the F-Type at the following link:

http://jag-lovers.org/fcomment.php3

Here is a link to more pictures

http://fast-autos.net/jaguar/jaguarftype.html

http://fast-autos.net/jaguar/ftype6.jpg

This is a great article about Jaguar and aluminum.

This article claims an XK by 2010, but this was written before Jaguar confirmed the X150, the codename for the next XK.

Here is Mark White who is the senior body structures manager for Jaguar and Land Rover vehicles.

http://subscribers.wardsauto.com/microsites/images/editorial/mark_white_080204.jpg

SanDiegoMac
04-13-2005, 12:11 PM
I know it must have taken some time to assemble all this, but it was worth it. Thanks.

Kaptain
04-23-2005, 11:46 PM
One of those quotes is wrong.

It should be...

"The complete body with PAINT weighs 650 pounds compared with an estimated 1,058 pounds for the same car in steel, 952 pounds for a Mercedes-Benz S-class, and 955 pounds for a 7-series BMW."

more stuff

"Thanks to advances in planetary gearset design, the ZF six-speed automatic gearbox is 24 pounds lighter, 2.0 inches shorter, and has 30 percent fewer parts than the five-speed unit in the outgoing XJ8."

for the XJR and Super V8...

"Front suspension knuckles are also shaped differently from the standard model to provide adequate clearance for significantly larger brake rotors and calipers."

- from The Inside Guide to the all-new aluminum Jaguar XJ by Automobile Magazine

Kaptain
04-26-2005, 07:27 AM
Here is a quote from an interview with Henrik Fisker and motorsportscenter.com. Henrik Fisker was Aston Martin's director of design from 2001 until December of last year.

MotorSportsCenter: Does the V8 Vantage adhere to the new European safety law regarding pedestrians?

Henrik Fisker: The Vantage actually comes out before that law takes effect. Just to give a comment on that - and this is just purely my opinion, not reflecting on Ford Motor Company - but there is a problem today, in my opinion, where you have too many government officials that don't understand the car industry but are making up laws, with good intent, but they end up really lingering the progress of even safety. You are only looking at one aspect; when you force only one aspect on a car, like pedestrian safety, you force the company to spend all their time and resources on that aspect, where if you look at it in a more holistic way - like, for instance, what Volvo has done for years; they have always had an eye on safety. Where does it make the most sense to improve safety? Volvo is the one that came out with a lot of [safety improvements] first, not from government regulations at all. That would be, for me, the better way to do it.

This pedestrian safety restriction, I think, is a waste of opportunity. And it's going to cost a lot of money, and it is money that will be paid for, in the end, by the consumers.

I think there are more innovative ways to deal with [safety]. Maybe some of that will come out; there will be some adjustment - that's my prediction. Unfortunately, we will spend a lot of money in the next few years, but then somebody will realize that maybe that was not the bet ideas, and then there will be some new ideas coming up.

Kaptain
04-26-2005, 10:39 PM
Here is another article about Jaguar and aluminum.

(It mentions a 2010 XK but this article was written before Jaguar announced the X150, the code name for the next XK).

http://wardsauto.com/ar/auto_jag_ponders_aluminum/index.htm

Kaptain
04-27-2005, 12:38 AM
View this article

http://www.i-car.com/html_pages/about_icar/current_events_news/advantage/advantage_online_archives/2003/051903.html

Also, view this article from http://www.sts.sae.org/servicetech/sep-2003/xj-something.pdf

(The link no longer works).

September 2003

XJ is something different: The new Jaguar sedan, with its all-aluminum monocoque construction, will provide some challenges for body shops and technicians alike.

by Paul Weissler | Service Tech

Jaguar says its 2004 XJ is the world’s first mass-produced, all-aluminum “monocoque.” But maybe you are thinking, “Hey, that’s just for the body shops to worry about.” Well, there are things for technicians to realize too. Like any monocoque, including an airplane, the body panels form an important part of its strength. That means “creative time-saving” is not a possibility, such as cutting some little access panel in an out-of-sight location, then covering up the opening with some sheet aluminum and pop rivets.

Interestingly, the XJ is not welded (well, it has a few, primarily for specific issues). It is built with 3180 self-piercing, high-strength rivets and 394 ft (120 m) of structural adhesive (a one-step epoxy). Because the rivets alone would provide a much stronger assembly than the 5000 welds typical for a car of this size, the overall result is “belt and suspenders.” However, the adhesive really silences body vibrations, and that is reason enough for its use.

An old gag refers to a vehicle “held together by its paint job,” and there is a kernel of truth in that with the XJ. The aluminum body panels use a special alloy that is “bake-hardened” in the paint oven—to 165°C (330°F)—substantially increasing their strength (particularly resistance to dings). And the epoxy cures in that same oven.

The new model is 60% torsionally stiffer than the previous XJ, but thanks to all the aluminum, the car is over 200 lb (90 kg) lighter, despite greater size. The use of magnesium—which is as strong as aluminum but 30% lighter still—for the XJ’s seat frames and cross-car beam that supports the instrument panel and steering column also contribute to mass savings.

If a glued/riveted panel has to be replaced in a body shop, Jaguar has approved a two-step epoxy that cures at ambient temperatures. Happily, the front fenders and front bumper structure are bolted on for easier repair. The front-end module is said to be able to withstand a 10-mph (16-km/h) impact without structural damage being inflicted thanks to its impact-absorbing properties between the front-end module and body shell.

Made from injection-molded plastic, the bumpers of the new XJ are designed to withstand a 5-mph (8-km/h) impact without structural damage. “Lift-off” door hinges make removal easy if collision repair is needed, reducing time and cost.

As for those few welds, the roof is welded on because it helps produce a cosmetically superior appearance at the four corners. And a few parts from outside suppliers include welds. More importantly, the 26 body electrical grounds are supplied by welded-on studs and nuts because the glue is not conductive. If one of these grounding fasteners ever breaks off or suffers irreparable damage to threads, a replacement can be welded on unless an aftermarket repair kit becomes available.

Joe ///M
04-27-2005, 01:54 PM
My M6 Euro weighs 3680. That's lighter than that aluminum Jag. I understand, though, that they are in 2 different classes.

It is loaded to the gills. I especially dig the Gangsta' TV headrests! Nothing like wasting about three grand extra of your hard-earned cash to impress the idiot behind you in traffic. (Or to placate the ankle bighters in the back seat, in which case SHAME ON YOU for hauling kids in such a beautiful interior!!!) LOL.



The nicest Jag, IMO is still the earlyu 90's V12 convertible or coupe.

My friend Michele said that was the only car that, "...physically turned [her] on." Back then, I wished I could afford one just so I'd have a hottie to ride shotgun!

Funny, the new "L" wheelbase looks a lot like the Jags of yesteryear.

///M

Kaptain
04-27-2005, 04:50 PM
The new M6 or the old one?

The new one weighs more than 3,680 pounds.

Kaptain
04-27-2005, 11:30 PM
Aluminum underbody components are fastened together with aerospace-grade epoxy adhesives and some 3,200 self-piercing rivets to create the new XJ's chassis.

Jaguar uses magnesium for a cross-car beam that supports the dashboard and instrument panel. It is used with aluminum to create a lightweight steering column.

another article

http://www.i-car.com/html_pages/about_icar/current_events_news/advantage/advantage_online_archives/2003/112403.html

http://www.i-car.com/graphics/about_icar/current_events/advantage/2003/advantage_online_1124/full_size/fig_04.jpg

Peter
05-16-2005, 12:20 AM

brettf1
05-22-2005, 01:33 PM
I'm going to the one at Infineon Raceway in Sonoma...

Kaptain
06-18-2005, 12:04 AM
The Jaguar Advanced Lightweight Coupe shows what the next XK might look like. Its grille is inspired by the 1961 Jaguar E-Type. The next Jaguar XK will have a hatch like the E-Type.

The next XK will have to comply with new European pedestrian safety regulations. The next XK's front bumper will need to be more blunt to meet these new regulations.

The next XK will use the new XJ's aluminum chassis and it will drop weight while being more rigid than the current XK's steel chassis.

Many people say that the Jaguar Advanced Lightweight Coupe looks too much like an Aston Martin. One thing I notice about the Jaguar is that its tail tapers off like the current XK while the trunks of new Aston Martins are flat and have that crease around them or have a spoiler like the 2006 Aston Martin V8 Vantage.

Note: The new Aston Martins have their own new aluminum chassis.

Notice the grille of this Jaguar E-Type.

http://next.web-cars.com/nu_etype2_img/e-type_snow_a.jpg

Here is the Jaguar Advanced Lightweight Coupe.

http://photos.velocityjournal.com/images/full/2005/132/jg2005advancedlightweigh1326532.jpg

http://photos.velocityjournal.com/images/full/2005/132/jg2005advancedlightweigh1326533.jpg

http://www.ultimatecarpage.com/images/slide/naias2005/2615.jpg

http://www.fast-autos.net/events/05naias/jaguar/12.jpg

http://www.fast-autos.net/events/05naias/jaguar/5.jpg

http://www.fast-autos.net/events/05naias/jaguar/1.jpg

XJ's aluminum chassis

http://www.theraceforum.com/images/forum/3041-25-2.jpg

http://www.theraceforum.com/images/forum/3041-24-1.jpg

Kaptain
07-01-2005, 10:44 PM
Check this link

Jaguar's AJ-V8 (http://www.jagweb.com/aj6eng/v8_performance.html)

Jaguar's V-8 was revised for the 2003 S-Type, XK, and the new aluminum XJ. It now has 4.2 liters. It has more power, less emissions, better gas mileage, and has a stronger block than the old 4.0 liter V-8 which powered the 1997 Jaguar XK8.

Here is the engine block of the 4.2 liter V-8.

http://www.jaguarusa.com/us/en/vehicles/xj/performance/introduction_4DA07F19-518E-4CA8-946A-085A0697B8BE_462x669.jpg

4.2 liter 390 hp supercharged V-8. It has 399 lb-ft of torque.

http://www.jaguarusa.com/us/en/vehicles/xj/performance/introduction_FCC138FF-BFB6-4116-BBFB-5BA7B2F822E4_462x669.jpg

http://www.jaguarusa.com/us/en/vehicles/r-performance/Overview/overview_1CC97284-D0AF-43F4-BB5B-8649EEA8FE4F_462x669.jpg

http://www.jaguar.co.uk/uk/en/vehicles/r-performance/overview/r_power_29A29ADB-E39C-457F-9F53-05B84AECD60F_450x669.jpg

Kaptain
08-10-2005, 05:42 PM
Here is an excerpt from a motorsportscenter.com interview with Henrik Fisker, Aston Martin's Director of Design from 2001 until December of last year.

MotorSportsCenter: Does the V8 Vantage adhere to the new European safety law regarding pedestrians?

HF: The Vantage actually comes out before that law takes effect. Just to give a comment on that - and this is just purely my opinion, not reflecting on Ford Motor Company - but there is a problem today, in my opinion, where you have too many government officials that don't understand the car industry but are making up laws, with good intent, but they end up really lingering the progress of even safety. You are only looking at one aspect; when you force only one aspect on a car, like pedestrian safety, you force the company to spend all their time and resources on that aspect, where if you look at it in a more holistic way - like, for instance, what Volvo has done for years; they have always had an eye on safety. Where does it make the most sense to improve safety? Volvo is the one that came out with a lot of [safety improvements] first, not from government regulations at all. That would be, for me, the better way to do it.

This pedestrian safety restriction, I think, is a waste of opportunity. And it's going to cost a lot of money, and it is money that will be paid for, in the end, by the consumers.

I think there are more innovative ways to deal with [safety]. Maybe some of that will come out; there will be some adjustment - that's my prediction. Unfortunately, we will spend a lot of money in the next few years, but then somebody will realize that maybe that was not the bet ideas, and then there will be some new ideas coming up.

Jaguar Advanced Lightweight Coupe shown below

http://www.anything-auto.net/CARS/Jaguar/2005_Advanced_Lightweight_Coupe_Concept/05advancedlightweight_16.jpg

http://www.anything-auto.net/CARS/Jaguar/2005_Advanced_Lightweight_Coupe_Concept/05advancedlightweight_15.jpg

http://www.anything-auto.net/CARS/Jaguar/2005_Advanced_Lightweight_Coupe_Concept/05advancedlightweight_26.jpg

http://www.anything-auto.net/CARS/Jaguar/2005_Advanced_Lightweight_Coupe_Concept/05advancedlightweight_18.jpg

http://www.anything-auto.net/CARS/Jaguar/2005_Advanced_Lightweight_Coupe_Concept/05advancedlightweight_10.jpg

Kaptain
08-17-2005, 08:57 PM
As I said before, the 2005 Jaguar Super V8 weighs over 800 pounds less than a BMW 760Li.

http://motortrend.com/roadtests/sedan/112_0506_struggle09_z.jpg

http://motortrend.com/roadtests/sedan/112_0506_struggle05_l.jpg

http://www.jaguarusa.com/us/en/vehicles/xj/gallery/photos_795954DE-744F-4940-BBEB-CF98DFF77EF3_600x800.jpg

http://www.theraceforum.com/images/forum/2915-67-1.jpg

Kaptain
11-13-2005, 08:36 PM
Check this link for the new aluminum Jaguar XK

2007 Jaguar XK (http://seriouswheels.com/top-2007-Jaguar-XK.htm)

check the link for pictures, videos, and more of the new XK

http://newxk.keycast.com/keycast/jaguar/x150/main.asp?marketid=1&langid=8&d=1125124347250

The new XK has to comply with <b>new European pedestrian safety regulations.</b> The new XK will get Europe's first application of a pop-up hood system designed to meet these new regulations.

In short, politicians and others think that auto makers should compensate for poor drivers and pedestrians. Europe has a lot of pedestrian deaths in car crashes relative to the U.S.

check these links

link one (http://www.euractiv.com/Article?tcmuri=tcm:29-117530-16&type=LinksDossier)

link two (http://www.safetyresearch.net/Library/SRS037.pdf)

link three (http://www.walk.com.au/pedestriancouncil/Page.asp?PageID=607)

link four (http://waw.wardsauto.com/ar/auto_pedestrian_impact/index.htm)

press release on the new aluminum XK

- Pyrotechnic Pedestrian <b>Deployable Bonnet</b> is a world first

- System operates in less time than it takes to blink

- Advanced Sensing system can distinguish between different impacts

- Over 120 man years dedicated to system development

- Bonnet is raised in around 30 milliseconds using forces up to 50 times the force of gravity

Within the 'blink of an eye' In the unfortunate event of a pedestrian impact, the deployable bonnet on the new XK automatically 'pops' up a few inches, to create a cushioning effect between the engine and the bonnet. This helps to isolate the pedestrian from hard points in the engine compartment - and takes place in less than a tenth of the time it takes to blink an eye.

Jaguar is one of the first manufacturers to meet <b>Phase One</b> (there is a more strict phase coming in 2010) of new European safety legislation using an active deployable bonnet system. The new standards are designed to help mitigate the severity of injuries to pedestrians in the event of a collision with a car.

Legislation in the European market requires manufacturers to commit to a two-phase introduction of a range of active and passive safety improvements on all new cars to improve the protection of pedestrians in case of accident.

"The Jaguar design team embraced the idea of using a deployable bonnet when it was first considered during early concept discussions on the new XK. This clever feature saves between 50 and 65mm in height off the bonnet surface and a similar amount off the roofline, allowing the design team to maintain a very low, sleek Jaguar sports car profile on the new XK." said Ian Callum, Jaguar Cars Design Director.

The Pyrotechnic Pedestrian Deployable Bonnet provides an innovative solution to these legislative requirements whilst ensuring that the sleek lines that customers expect from Jaguar sports cars can be retained. The active system fitted to the all-new XK is complemented by a passive bumper system, the design of which helps to mitigate leg injury through the use of crushable foam and plastic covering. An advanced sensing system is mounted in the front bumper to help discriminate between a pedestrian collision and any other possible front-end collisions. The speed of the sensing time in the system is around one tenth of the time it takes to blink an eye.

The complex system has been extensively researched across wide-ranging scenarios, using 120 man-years and thousands of computer simulations, as well as tested in practice at Jaguar’s Engineering Centre at Whitley in Coventry, England. While all pedestrian impact research has been carried out using virtual tools, analysis of previous 'real world' incidents has played an important part in the development process.

One of the impressive points about the new XK's pyrotechnic deployable bonnet system is that it can lift the bonnet (which weighs 18kg) in around 30 milliseconds, which requires an acceleration rate of about 50 times the force of gravity (50g).

Physical research carried out by the Jaguar development team has included investigation of various impacts including inanimate objects such as motorway cones. This is a vital part of the process to allow the system to differentiate a person from other impacts that can be experienced in day-to-day driving.

The pyrotechnic pedestrian deployable bonnet system normally operates at vehicle speeds where it provides the most benefit and is automatically disabled outside of this speed range. The system is completely separate from any other crash protection system on the vehicle, including airbags.

http://www.theraceforum.com/images/forum/3041-57-1.jpg

http://www.theraceforum.com/images/forum/3245-0-1.jpg

http://www.theraceforum.com/images/forum/3041-59-1.jpg

The numbers are seconds.

http://www.theraceforum.com/images/forum/3245-1-1.jpg

(end of press release)

The following information is from a press release dated 10-5-2005:

<b>Lightweight Vehicle Technology</b>

- <b>Chassis consists of riveted and bonded aluminium</b>

- <b>All-aluminium construction gives best-in-class torsional rigidity for Coupe and Convertible</b>

- <b>Lightweight body structure means better performance, handling, safety, and economy</b>

- <b>Volume production of aluminium monocoque body structure unique to Jaguar in the automotive industry</b>

Key to the all-new XK’s character is Jaguar’s industry-leading bonded and riveted aluminium monocoque body structure, introduced with the latest XJ saloons. The aluminium body incorporates the latest thinking in epoxy bonding and riveting techniques to produce a chassis that is very safe and very light. In fact the new XK’s aluminium chassis is significantly lighter and stiffer in both Coupe and Convertible form than the steel model it replaces. The new Coupe chassis is over 30 percent stiffer than the previous XK, while the Convertible is an impressive 50 percent stiffer.

As a consequence the new XK accelerates faster, uses less fuel and produces lower emissions than the model it replaces, while offering high levels of safety, reduced noise and vibration intrusion, and improved ride and handling characteristics thanks to improved suspension dynamics.

Jaguar’s Lightweight Vehicle Technology is unique in the industry as a complete aluminium monocoque body structure as distinct from an aluminium spaceframe with separate aluminium panels. Developed from aircraft industry methods, where strength is critical, Jaguar’s manufacturing process produces a massively strong but very light structure. The new XK takes the concept a step further with extended use of lightweight aluminium castings and extrusions as well as the pressed aluminium panels. Its strength and light weight come from the way the shell is constructed, using new jointing technologies developed by Jaguar and its suppliers.

There is only a single welded joint in the new XK Coupe body, the one ‘cosmetic’ joint on the roof. That also has an environmental benefit in that the body construction needs no high electrical current, produces no welding sparks or fumes, and needs no water for cooling. All the other joints in the new XK shell are formed using Jaguar’s unique combination of riveting and bonding. Most joints are produced using self-piercing rivets applied by hydraulic pressure against a fixed tool. Where access to only one side of the joint is possible, as in some of the new extruded box sections, a new riveting process has been developed; and where particularly high stiffness is required in a joint, a combination of riveting and bonding is used – with the adhesive bond in effect creating a continuous joint which is stronger than a similar, riveted-only joint. All visible exterior panels are bonded to the underlying structure, and a new automated seam-sealing process seals all relevant areas of the shell before painting, to ensure that no gaps are missed.

In the new XK, a secondary front bulkhead of aluminium and composite materials helps reduce noise transmission from the engine compartment and provides a dry area under the bonnet for accommodating electrical components. The new structure also has benefits in refinement; castings used for the mounting points for the engine, transmission and suspension make those points significantly stiffer, further reducing transmitted noise and helping to improve suspension dynamics. In terms of long-term strength, Jaguar’s all-aluminium shell has durability approaching twice that of a traditional spot-welded steel body.

Another major advantage of this Lightweight Vehicle Technology is that all the necessary stiffness is in the structure of the body shell, with very large rectangular-section side sills. So the Convertible, even without a roof, does not need the traditional additional stiffening panels seen on many other convertibles - meaning no added weight and no penalty in stiffness or refinement. The aluminium monocoque construction is the biggest contributor to the low overall vehicle weight of the new XK, and the Coupe shell is over 30 percent stiffer than the previous model, while the Convertible boasts an impressive 50 percent improvement in torsional rigidity.

That lightweight body significantly also offers a 10 percent improvement in power to weight ratio. The all-new XK is up to 90 percent stiffer and 180kg lighter than key rivals, with a kerb weight of just 1595kg. In Convertible form the BIW weight, at just 287kg is 19 percent lighter than the previous XK Convertible.

“The lightweight vehicle architecture really helps the all-new XK to handle, steer and brake better than ever,” says Al Kammerer, Jaguar’s product development director. “Imagine how much easier it is to turn a lightweight object travelling at speed compared to a heavy one. The aluminium chassis makes the XK so much more controllable in corners and a whole lot of fun to drive!”

Safety is another major benefit of this very strong construction method. That is partly inherent in aluminium as a material, which absorbs significantly more energy per kilogramme of material weight than steel when it is deformed. But the strength advantage doesn’t only apply to high-speed impacts, it also means lower-speed accident repair costs are kept to a minimum. The reduction in the number of joints in the all-new XK further increases strength, and the front of the body is protected by easily replaced ‘crush cans’ that absorb the energy in impacts up to 15kph.

The all-new XK’s all-aluminium doors are each over 6kg lighter than an equivalent steel door and their mountings are significantly stiffer, which allows smaller gaps. Mounting the window glass rails directly to the aluminium castings at the front and rear of the door gives better sealing from the frameless layout, and an impressively solid sound and feel when closed.

The all-aluminium Liftback rear door is strong, light and simple to operate. Once it has been lifted manually through the first 20 per cent of its opening arc, gas struts lift it the rest of the way.

With lower weight and higher strength, Lightweight Vehicle Technology is the starting point for improved performance, safety, refinement, economy, emissions performance and driving dynamics in the new XK.

<b>Jaguar AJ-V8</b>

The latest AJ-V8 engine was developed to satisfy Euro 4 emissions requirements. Compared to the Euro 3 requirements, that meant a 50 percent reduction in hydrocarbons (HC) and oxides of nitrogen (NOx) and a 60 percent reduction in carbon monoxide (CO) emissions. The new engine also satisfies more stringent American regulations requiring a 50 percent reduction in HC emissions. It features Exhaust Gas Recirculation and the latest generation of catalyst cores with thinner coatings of higher density catalysing material – which reduces exhaust gas restriction and is more efficient.

The major difference between this engine and the previous generation 4.2 litre XK engine is in the fuel injection technology. This latest V8 now uses multi-hole injectors, which improve the fuel spray pattern in the combustion chambers, improving both power and fuel efficiency.

Optimum throttle response (a crucial ingredient in confirming the new XK’s sports car character) is delivered by full ‘drive-by-wire’ electronic throttle control, with no mechanical connection between the accelerator pedal and the throttle body. The response is based on the torque demand for every instantaneous driving situation. That is calculated by the electronic engine management control, based on parameters including the driver’s accelerator input, and other vehicle factors such as road speed, engine speed and gear selection. The electronic controls then call up the required torque at any instant by adjusting throttle position, variable cam phasing, fuel flow and exhaust gas recirculation settings.

Equally important for its new role in Jaguar’s sportiest cars, the 4.2 litre engine has been engineered to give the sound expected from a real sports car engine – especially under acceleration – but without being undesirably noisy. The new XK’s Semi-Active Exhaust system varies the flow of exhaust gases through the main, large silencer box depending on the pressure in the system, and features acoustically tuned tailpipes that eliminate low speed boom. There is also an underfloor resonator with two chambers (one for each cylinder bank) which balances the sound from the two banks. By tuning the sounds from the air-induction system and the exhaust system, Jaguar concentrated on both the solid, powerful low-frequency sounds and more technically ‘sophisticated’ higher frequency sounds, to give a feeling of power and performance.

<b>More Interior Room</b>

There is 59mm more seat-track travel, 54mm more front leg room, up to 31mm more front head room and 32mm more shoulder room <b>[than the previous XK]</b>.

There are more interior stowage spaces, and the combination of more interior space plus longer seat travel effectively increases rear seat space and makes rear seat access through the long doors easier.

(end of press release)

The new XK will spread costs due to the fact that it shares the new XJ's aluminum chassis.

The new XK's 4.2 liter 300 hp V-8 has a new intake, exhaust, engine management system, and a broader torque curve.

Low-pressure areas behind the front wheels help draw air through the side vents.

The following information is from autoweek.com:

"In development testing on the Nürburgring’s Nordschleife, Mike Cross, Jaguar's Chief Engineer of vehicle dynamics, has already turned laps with the naturally aspirated car within four seconds of the eight-minute, 36-second lap times posted by the supercharged XKR, which makes nearly 100 hp more."

The new XK Convertible weighs over 500 pounds less than the 2006 BMW 650Ci convertible.

Designed in parallel with the Coupe, the new XK Convertible uses the same advanced aluminium body structure technology to achieve excellent rigidity while minimizing weight. At just 3,759 pounds, the new Convertible is one of the lightest car in its competitive set.

A 300 hp, 4.2-litre V8 engine and Jaguar Sequential Shift steering-wheel-mounted gearchange controls ensure rapid performance of 0-60mph in just 6.0 seconds and an electronically limited top speed of 155mph.

The luxurious triple-lined, fabric roof - which can be powered up or down in less than 18 seconds - stows fully out of sight beneath an aluminium tonneau cover when retracted. A roll-over protection system comprising two 'hidden' aluminium hoops that deploy in the event of an incident is standard on all XK Convertibles.

The XK Convertible will be available from spring 2006. Full details of the car and pricing will be announced later this year.

http://www.rsportscars.com/foto/09/xkconv07_02.jpg

http://www.rsportscars.com/foto/09/xkconv07_03.jpg

http://www.rsportscars.com/foto/09/xkconv07_04.jpg

From top to bottom

D-Type, XJ13, E-Type, 2005 XK8, and 2007 XK

http://seriouswheels.com/pics-2007/2007-Jaguar-XK-Drawing-Front-Jaguars-1024x768.jpg

http://auto-presse.de/newssys/galerie/8207/8207_3.jpg

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http://automobilemag.com/auto_shows/frankfurt/0509_jaguar_xk_4.2_01m_900.jpg

http://automobilemag.com/auto_shows/frankfurt/0509_jaguar_xk_4.2_02m_900.jpg

http://www.ultimatecarpage.com/images/slide/iaa2005/5256.jpg

http://www.ultimatecarpage.com/images/slide/iaa2005/5259.jpg

http://www.ultimatecarpage.com/images/slide/iaa2005/5260.jpg

http://www.theraceforum.com/images/forum/2915-15-1.jpg

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http://www.theraceforum.com/images/forum/2915-50-3.jpg

The new XK could make a great race car. Here are more pictures of the 650 hp Jaguar XKR that Rocketsports Racing built for the Trans-Am Series. Its 4.5 liter V-8 is based on the production 4.2 liter V-8, has 425 lb-ft of torque, and has a 9,000 rpm redline. Jaguar won the Manufacturer's Championship and Klaus Graf won the Drivers' Championship this year. He drove the # 7 XKR.

http://www.trans-amseries.com/Content/Photo/2005/By200/20050401P_0001.jpg

http://www.theraceforum.com/images/forum/2909-20-2.jpg

http://www.theraceforum.com/images/forum/2909-18-2.jpg

He won the race in Denver.

http://www.trans-amseries.com/Content/Photo/2005/By800/20050813P_0001.jpg

http://www.trans-amseries.com/Content/Photo/2005/By800/20050813P_0021.jpg

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http://www.trans-amseries.com/Content/Photo/2005/By800/20050813P_0012.jpg

http://www.trans-amseries.com/Content/Photo/2005/By800/20050813P_0005.jpg

http://www.theraceforum.com/images/forum/2915-58-1.jpg

4.2 liter production V-8

http://www.theraceforum.com/images/forum/3245-0-3.jpg

All 2006 XJs have more powerful brakes than 2004-2005 XJs. Supercharged XJs no longer use Brembo brakes, but the calipers are now floating.

<b>2006 normally-aspirated XJs</b>:

Front: 12.83 x 1.18 in. ventilated discs, floating cast iron calipers

Rear: 12.83 x 0.79 in. ventilated discs, floating aluminum calipers with integral park brake caliper

<b>2004-05 normally-aspirated XJs</b>:

Front: Ventilated discs, 12.6 in x 1.18 in., sliding aluminum calipers

Rear: Ventilated discs, 11.3 in. x .79 in., aluminum calipers

<b>2006 supercharged XJs</b>:

Front: 13.98 in. x 1.26 in. ventilated discs, floating composite aluminum and cast iron four calipers

Rear: 12.83 in. x 0.79 in. ventilated discs, floating aluminum calipers with integral park brake caliper

<b>2004-05 supercharged XJs</b>:

Front: Brembo ventilated R Performance discs, 14.4 in. x 1.26 in., fixed aluminum four piston calipers

Rear: Brembo solid R Performance discs, 13.0 in. x .59 in., fixed aluminum four piston calipers

2006 supercharged XJs have 400 hp (new SAE [Society of Automotive Engineers] ratings) and 413 lb-ft of torque.

The addition of an acoustic laminate to the windshield and side glass of the 2006 XJ helps to reduce interior noise, while simultaneously increasing occupant safety by making "smash and grab" theft particularly difficult.

2006 normally-aspirated XJs have 300 hp and get 27 mpg on the highway.

2006 XJ shown below

http://www.theraceforum.com/images/forum/3245-2-3.jpg

http://www.theraceforum.com/images/forum/2915-17-3.jpg

The next S-Type?

http://www.thecarconnection.com/images/gallery/10266_BJHQYUFQVOSWD.jpg

2003 RD-6 concept

http://galleries.wheels24.co.za/cars/Jaguar/wallpaper/large/30.jpg


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