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Mazda Australia Turbocharged "Extreme" RX-8 Concept
Submitted by Dan Mazzella on Thursday, October 7, 2004 - 1:47pm

Mazda Australia today unveiled the first of its "extreme cars", a turbocharged RX-8 Motorsport Concept, at the Australian International Motor Show in Sydney.

The "extreme" RX-8, which was conceived by Mazda Australia’s motor sport manager Allan Horsley, is powered by a turbocharged and intercooled rotary engine that is expected to develop about 270 kilowatts of power and close to 350Nm of torque.

The car also features 19-inch wheels and tyres, a high performance racing brake package, retuned suspension and Mazdaspeed body kit parts for a more aggressive look.

Mazda Australia’s "extreme car" program was prompted by new managing director, Doug Dickson.

"The idea of this program is to challenge our corporate imagination and in this case we have developed a faster, more aggressive, motor sport version of the RX-8", Dickson said.

"This one-off concept further demonstrates the strength, integrity and ability of the production RX-8 because the fundamentals of this concept remain true to the standard car".

Motor sport manager, Allan Horsley, said: "The RX-8 Motorsport Concept was a must do challenge for us and thanks to the engineering sophistication of the production car it all came together in just a few months.

"We plan to give some of the motoring media with racing experience the opportunity to enjoy the fruits of our labour at a track day drive event".

Future Mazda "extreme car" projects will not necessarily focus on the company’s class-leading sports cars or on its award-winning passenger models.

"The idea behind ‘extreme cars’ is not just added acceleration and all that goes with that formula. An idea could involve any present Mazda model.

We have, for example, discussed an extreme B Series, that would showcase its comfort, refinement and off-road ability", Dickson said.

The RX-8 Motorsport Concept makes its intentions known with an aggressive looking Mazdaspeed nose with integrated spoiler and big air intake as well as a large and adjustable Mazdaspeed rear wing.

Velocity Red mica metallic paint and attention grabbing white "GT stripes" run along the car’s sides, while bonnet flutes further hint at the car’s added performance and aid under bonnet cooling.

Riding on striking white-painted, 19x8-inch alloy wheels, the concept features different tyre sizes front and rear. 235/35 tyres are used on the front wheels and larger 255/35 tyres on the rear, helping deliver the concept’s prodigious power and torque to the road. The production RX-8 boasts 18x8 alloy wheels and 225/45 tyres.

A centre-mounted rotary-shaped brake lamp completes the strong visual statement made by the RX-8 Motorsport Concept.

The car’s revised suspension, which drops the ride height by 25mm, improves the standard car’s class leading dynamics and adds to the concept’s visual impact.

Suspension modifications focus on new specification, stiffer Eibach springs that help improve the already impressive grip offered by the RX-8’s multi-link front and rear suspension.

The revised suspension settings, which help reduce body roll, further sharpen responses from the car’s electric-driven rack and pinion steering.

Promising considerably more power and torque than the standard car, the RX-8 Motorsport Concept features a Renesis rotary engine complete with

a water cooled Garret turbocharger running 7.5lbs of boost pressure and a large air-to-air intercooler.

These modifications and a re-programmed Power Control Module that maximises the engine’s efficiency are expected to boost power by more than 52 per cent over the production RX-8.

The engine’s pulling power, or torque, receives a substantial boost over a wide rev band, with it peaking about 350Nm, an increase of almost 65 per cent over the road car.

Using a relatively small and low-boost turbo ensures good throttle response and maintains the free-revving nature of the road car’s normally aspirated rotary engine.

The RX-8 Motorsport Concept’s compression ratio and redline are unaffected, allowing the turbo engine to race to 9000rpm.

A larger, free-breathing exhaust system ensures maximum power gain while a new muffler also aids breathing and delivers a throatier, more purposeful exhaust note.

Braking is by an Alcon six piston racing system that features 335mm vented and grooved discs. Similar systems are used in world rally, Japanese GT, V8 Supercar and NASCAR racing.

Other mechanical upgrades include a smaller but more powerful battery, while a larger core radiator ensures the engine runs within its ideal temperature range under all conditions.

The RX-8 Motorsport Concept shares Mazda’s new-look Australian International Motor Show stand with the Ibuki near future concept roadster, which was unveiled at the Tokyo Motor Show last year. Mazda will also showcase its full range of new generation cars - the Mazda2, Mazda3 and Mazda6.

The Australian International Motor Show at Darling Harbour, Sydney, opens its doors from October 7 to October 17.

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subject:
RX-8 turbo
author:
No Rotor
date:
October 10, 2004 - 10:29pm
It wouldn't surprise me if this car made it into limited production - but only if there is no official hi-po version of the car from Japan in the mid-term. Mazda Australia has the set the precedent in the past with 1995 RX-7 SP and the 2003 MX-5 SP.
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subject:
Aussie RX-8
author:
No Rotor
date:
October 8, 2004 - 3:48pm
G'day guys.

This RX-8 is a one-off unfortunately. With Mazda Australia already ripping the Aussies off with a car 60% more expensive than the same one in Japan, this modified version would prove way out of reach from the potential buyer. Mazda Australia have already acknowledged it will never make it into production reality & its really just to create some excitment for the product range. Although the average public will ask about it at the show & the "Official line" is its "Under evaluation".

The turbo engine is a basic copy of the ROTORMASTER turbo RX-8 as Alan Horsley took it for a couple of days to study after the ROTORMASTER car became public knowledge back in Jun-04.

All the work was performed by outside contractors as if it where a normal car getting modified by its owner & Horsley is believed to have spent over AU$20k in additions.

REgards
DMRH
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subject:
Incorrect information
author:
No Rotor
date:
November 10, 2004 - 5:56pm
Please inform us where you obtained this incorrect information Mr/Mrs DMRH. The above mentioned individuals have no recollection of your speaking with them on this matter.

JB&N Consulting
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subject:
Out of reach?
author:
No Rotor
date:
October 11, 2004 - 12:45am
I'm a rotor man through and through. Love them. I've been following the whole development of the Rx8 for years (mainly on this site actually). I owned and still love my 13b turboed 1st Gen Rx7. I was recently in the market for a new car. I drove the Rx8 and loved it. I was 99% decided on buying one. I thought, just for the heck of it, I'd drive a 350z and a Monaro. (I appologise for driving the Monaro - I wasn't serious) In the end I bought the 350z Track because as much as I love rotors, the Rx8 is a great car, but it's not close to being sporty enough. Drive the Rx8 and 350z back to back and you'll understand. The 350z is about 3k more than the Rx8. I would have gladly spent a further 10k to have a factory endorsed turbo Rx8 with slightly better brakes. 75k for an Rx8 Turbo (with limited edition status). I would have bought it.
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subject:
The real question...
author:
date:
October 8, 2004 - 6:50am
...is will this car have the claimed power numbers at the time of its release, supposing it gets released at all.

At Sevenstock there was a turbocharged RX-8 in the Mazda showroom with the X-Men RX-8. (Well, it had a front mounted intercooler and a boost gauge so I assume it was turbo). Lets hope this car hits the street.

I would like to see a factory racer ala the Porshe GT3 or the Viper GTS-R.
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subject:
FI 8 at 7stock
author:
No Rotor
date:
October 13, 2004 - 5:10pm
the 8 in question in the room at 7stock had a supercharger not a turbo. while we couldnt get them to open the hood it was quite easy for one person to look thru the wheel well and see the factory exhaust manifold- hence not a turbo.

regards
zoom44
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subject:
Sounds great! Hopefully this
author:
No Rotor
date:
October 7, 2004 - 2:13pm
Sounds great! Hopefully this is somethin Mazda North America will adopt and sell. However, can someone lease translate the kilowatts and nm's into HP and ft lbs please.
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subject:
for us americans
author:
No Rotor
date:
October 7, 2004 - 2:21pm
270 kiloWatts = 362.075964 hp
350 (Newton meters) = 258.146752 pound force feet

go, go, google calculator!
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subject:
Notice it says "Target" power
author:
No Rotor
date:
October 8, 2004 - 3:59pm
Notice it says "Target" power, not claimed power

meaning they can overquote as much as they like
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subject:
Trans and rearend
author:
No Rotor
date:
October 10, 2004 - 7:59am
I am curious to see if the rest of the drivetrain will hold up to the increased power and torque under spirited driving.
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