Fresh from Mazda Canada
The info on what they say and have about the MS3. I had to steal 1 thing, all is available on their site.
(The MAZDASPEED3 Technical Specifications will have to be viewed at thier web site, sorry)
MAZDASPEED3 A double dose of Zoom-Zoom
MAZDASPEED3 is outfitted with Mazdas 2.3-litre DISI (Direct Injection Spark Ignition) Turbo engine in a front engine, front-wheel drive (FWD) layout that is targeted to exceed 250 HP. This not only makes MAZDASPEED3 one of the most powerful and responsive compact sports models with FWD, it combines this with a stiffer body shell and a suspension with a significant improvement in roll stiffness versus the current Mazda3 for superior Zoom-Zoom handling attributes.
Mazdas direct injection technology not only makes the new MAZDASPEED3 powerful, it also has fuel consumption levels that are particularly good for a car with this kind of performance.
MZR 2.3L DISI Turbo engine
In addition to delivering a high performance Zoom-Zoom driving experience, the MZR 2.3L DISI Turbo engine also exhibits good environmental compatibility with low fuel consumption. This powerplant is a direct injection turbocharged unit developed by Mazda to achieve three aspects of performance that are difficult to realize with conventional manifold injection engines:
~good fuel economy and low exhaust gas emissions,
~powerful acceleration thanks to the turbocharger, and
~a full and flat torque curve throughout the rev range for exceptional engine response.
Mazdas MZR 2.3L DISI Turbo injects fuel into the cylinders at pressures as high as 1,600 psi, which cools the combustion chambers (internal cooling effect) through latent heat of vaporization, thereby improving the charging efficiency. This can increase torque by up to 10 percent at certain rpm ranges compared to a conventional manifold injection type turbo engine, making powerful, easy to control torque available across a wide range of engine speeds. This high power and easy to use flat torque curve is attained by the use of a fixed geometry turbocharger.
The internal cooling effect within the combustion chamber increases the cylinder charge volume under initial acceleration and hence the exhaust-gas flow, causing a linear increase in rotation speed of the turbocharger's compressor wheel. As a result, the turbocharger provides boost effect soon after the accelerator is pressed assuring excellent response at low to mid-engine speeds.
High-pressure direct injection of fuel into the cylinder also results in an optimized air fuel mixture forming in the vicinity of the spark plug, reducing the risk of misfire. This allows earlier ignition, making it easy to raise the temperature of the exhaust gas. Moreover, use of a lightweight, fixed geometry turbocharger dramatically reduces the thermal capacity of the exhaust system, minimizing the loss in temperature of exhaust gas. As a result, the catalytic converter reaches its activation temperature faster after the engine is started.
Because the internal cooling effect within the combustion chamber reduces knocking tendencies and boosts fuel economy without sacrificing low end torque, the MZR 2.3L DISI Turbo engine has a relatively high compression ratio for a turbo engine of 9.5:1 which contributes to improved fuel economy.
For MAZDASPEED3, the development team fine tuned both the engine and exhaust system to produce a sporty sound that enhances driving pleasure. Tuning of the exhaust system focused on sounds in the low frequency range, while tuning of engine sound focused on the mid frequency range produced at high engine speeds to deliver an enjoyably sporty sound. A powerful exhaust note is hit the moment the engine is started, and a pleasurable sound sustained in sync with accelerator pedal input as the car gains speed.
High-level torque management
A wide range of optimizations give this high power, high torque front-wheel drive vehicle greater ease of use with more comfortable driveability and handling. Intake volume and boost pressure control sudden torque peaks, assuring smooth, linear torque delivery. Additionally, torque characteristics from first through fourth gears are optimized to deliver appropriate drive power from take off.
Torque control is also linked to the steering angle, and the stiffness of the left and right drive shafts is balanced with the angles optimized to control torque steer. A newly-developed limited slip differential is also adopted to provide ample torque to the inner wheel during hard cornering for smooth, predictable driving in the curve.
Six-speed manual transmission
The new MAZDASPEED3 employs the six-speed manual transmission introduced with the MAZDASPEED6 that provides the driver with the pleasure of having full control over the vehicles high power, while contributing to a quiet ride and better fuel economy.
A compact three shaft design made it possible to keep the overall length the same as for the five-speed manual transmission used in the base model. In addition, MAZDASPEED3s six-speed transmission uses wide gear ratios to fully exploit the wide torque band of the direct injection turbocharged engine. The transmissions high-ratio sixth gear contributes to a quieter ride and improves fuel economy during high-speed cruising. Triple cone synchronizers for first through third gears and a double cone synchronizer for fourth gear assure ample sync capacity to enable a short, clean action shift stroke and comfortable shift feel.
High body rigidity and specially tuned chassis
The new MAZDASPEED3 features a body with greater rigidity than the original Mazda3 model. The MAZDASPEED version is based on the Mazda3 Sport, with local reinforcements added to realize a body sufficiently stiff and robust to stand up to the extra demands of sporty driving. Suspension and brakes have also been specially tuned for the MAZDASPEED. These improvements assure a body and chassis capable of easily handling the extremely high power delivered by the MZR 2.3L DISI Turbo engine.
Body rigidity has been increased by several features, including a reinforced front cowl member that is joined directly to a plate in the top section of the front damper mount, assuring the same rigidity as a car fitted with strut tower bars. This prevents deformation of the front suspension towers and maintains correct suspension geometry. In the lower body, a large closed section member is employed to reinforce the floor tunnel which improves the torsional rigidity of whole body. At the rear, the gusset introduced at the bottom end of the rear suspension towers restrains the tendency of the towers to displace inwards which maintains the correct suspension geometry in the rear.
Specially tuned suspension gives 60 percent improvement in roll stiffness
Special suspension tuning was conducted to support the high power output of MAZDASPEED3s engine. Both the MacPherson strut front suspension and multi-link rear suspension have higher coil spring rates and larger diameter stabilizer bars than the Mazda3. Dampers also have a higher damping force on the MAZDASPEED3. Damping force on both jounce and rebound is approximately 6 times better at low piston speed, and about 1.3 times better at moderate piston speed. Combined with the reinforced coil springs and stabilizer bars, this produces significantly more roll stiffness than the Mazda3.
Focus on safety upgraded brake system to match the high power
The starting point for MAZDASPEED3 safety package was to preserve the accurate, predictable handling of the original Mazda3. Large diameter 4-wheel disc brakes, ventilated 320 mm discs at front and solid 280 mm discs at rear, 8+9 inch tandem brake booster and a large 1 inch diameter master cylinder yield powerful and stable braking.
Standard equipment includes 4-wheel ABS, emergency brake assist, and dynamic stability control (DSC), all of which provide active safety for the MAZDASPEED3 in a range of driving scenarios. In addition, a rain-sensing wiper system and auto light system are also standard to give the driver a clear view of the road and help prevent accidents.
For protection during collision from any direction, MAZDASPEED3 employs the unique Mazda Advanced Impact energy Distribution and Absorption System (MAIDAS) to deliver a robust and safe body structure. Inside the cabin, front dual airbags are fitted as standard, along with side and curtain airbags. A collapsible brake pedal and revised steering column structure reduce the risk of injury to the driver's lower legs, while a seat belt reminder system, which confirms whether seatbelts are buckled or not, is also included to support the safety of the front and rear occupants.