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MR2 - A Evolução
Mk1
Alguns protótipos depois:
Surgiu debaixo do pano:
Mk1 MR2 - AW10, AW11 1984 - 1989
Mk2 MR2 - SW20 1989-2000
Mk3 Mr2 Spyder Prototypes
Mk 3 Mr2 Spyder - ZZW30 1999-Actualidade
A Evolução:
Mk1
The project started in 1976 and had many hold-ups along the way, including the fuel crisis. By 1979 things were on the go again with three main stages of design: research, development, and production considerations. Along the way it changed to a front- engined, front-wheel-drive car, but that thankfully was dumped. One challenge was to produce a sporty machine that would appeal to a wide range of people, and yet be reasonably priced. It also had to be a practical car, with a big enough boot and easy entry and exit from the cabin.
The market was ripe for mid-engined sports cars, with Fiat's X1/9, and it was heard through the grapevine about the forthcoming Pontiac Fiero to be built in America. Toyota knew they were on the right track. The original mid-engined prototype was developed into the SA-X. Drivetrains and other parts where sourced mostly from Toyota's parts bins and saved on long and expensive development costs. Enthusiasm was high, with some people on the team giving up their summer holidays to work on the car at a test track near Fuji. In 1983, after some final detail changes, the car was ready to show to the world.
The market was ripe for mid-engined sports cars, with Fiat's X1/9, and it was heard through the grapevine about the forthcoming Pontiac Fiero to be built in America. Toyota knew they were on the right track. The original mid-engined prototype was developed into the SA-X. Drivetrains and other parts where sourced mostly from Toyota's parts bins and saved on long and expensive development costs. Enthusiasm was high, with some people on the team giving up their summer holidays to work on the car at a test track near Fuji. In 1983, after some final detail changes, the car was ready to show to the world.
Surgiu debaixo do pano:
Mk1 MR2 - AW10, AW11 1984 - 1989
Slight changes to the car, and name, were made and in May 1984 the first MR2 rolled off the production line. Rumoured to be the MX100, an abandoned Lotus project, the unique little car immediately impressed the motoring critics of the day. Toyota's mid-engined affordable sports car was only seriously rivalled by the X1/9, though Japanese reliability was surely an advantage.
The mid-engined rear wheel drive configuration is relatively rare in road cars. The configuration appears in exotic sportscars like Ferrari and Lambourghini. From an engineering point of view the mid-engine layout makes sense and helps to produce a car that handles brilliantly. The cost of this layout is felt in terms of lack of luggage space, but as long as you pack in soft bags and don't take the kitchen sink, the MR2 has plenty of room.
Very few of the cars were manufactured with the original powerplant, a single carbeurettor 1500cc engine (that MR2 is known as an AW10), before the fuel injected 1600cc twin cam 4AGE engine became standard (that MR2 is known as the AW11). The MR2 earned a lot of praise but the most common complaint was a lack of power. In order to resolve this problem, Toyota chose to force-feed their reliable and proven 1600 in 1986. The 4AGE engine was fitted with a roots-type supercharger which upped the power from 112hp to 145hp and was called the 4AGZE. Along with the engine upgrades came some rear suspension changes, and bigger brakes all around. Targa tops became optional and popular, although there are a few removable sunroof models around (mostly NZ new).
Summary (somente modelos japonesess)
1984
MR2 Released.
Commonly referred to as the pre-facelift model.
Usually had black bumpers, spoiler and wing mirrors.
AW11 and AW10 models produced.
Release in New Zealand with slightly different rear tail lights and most had sunroofs.
1985
Reported first year of the supercharged model - but this is not confirmed.
Reported first year of the targa top model - but this is not confirmed
1986
Supercharged model definately arrived by now.
Targa top option definately available.
Rear suspension, brakes, rear lights, front bumper and chin, and interior revised.
1987-1988
No more changes that author is aware of.
1989
Rear spoiler with LED high stop light.
Revised rear wing mirrors.
The mid-engined rear wheel drive configuration is relatively rare in road cars. The configuration appears in exotic sportscars like Ferrari and Lambourghini. From an engineering point of view the mid-engine layout makes sense and helps to produce a car that handles brilliantly. The cost of this layout is felt in terms of lack of luggage space, but as long as you pack in soft bags and don't take the kitchen sink, the MR2 has plenty of room.
Very few of the cars were manufactured with the original powerplant, a single carbeurettor 1500cc engine (that MR2 is known as an AW10), before the fuel injected 1600cc twin cam 4AGE engine became standard (that MR2 is known as the AW11). The MR2 earned a lot of praise but the most common complaint was a lack of power. In order to resolve this problem, Toyota chose to force-feed their reliable and proven 1600 in 1986. The 4AGE engine was fitted with a roots-type supercharger which upped the power from 112hp to 145hp and was called the 4AGZE. Along with the engine upgrades came some rear suspension changes, and bigger brakes all around. Targa tops became optional and popular, although there are a few removable sunroof models around (mostly NZ new).
Summary (somente modelos japonesess)
1984
MR2 Released.
Commonly referred to as the pre-facelift model.
Usually had black bumpers, spoiler and wing mirrors.
AW11 and AW10 models produced.
Release in New Zealand with slightly different rear tail lights and most had sunroofs.
1985
Reported first year of the supercharged model - but this is not confirmed.
Reported first year of the targa top model - but this is not confirmed
1986
Supercharged model definately arrived by now.
Targa top option definately available.
Rear suspension, brakes, rear lights, front bumper and chin, and interior revised.
1987-1988
No more changes that author is aware of.
1989
Rear spoiler with LED high stop light.
Revised rear wing mirrors.
Series I 12/1989 - 12/1991 First of the MKIIs
Series II 12/1991 - 10/1993 Red paint changed;Upgraded rear suspension; Front air dam lower and further forward;15" wheels
Series III 10-1993 - ?/1995 New engines for NA producing 185 hp and for Turbo producing 245 hp;Bilstein shocks all round;Single piece rear wing;Round tail lights;Improved brakes (although may have been in Series II)
Series IV 1995 - 1998 Black roof paint scheme and different paint options available
Series V 1998 - 1999 More aggressive adjustable rear wing
New thin spoke wheels; NA engine upgraded to VVT model
Series II 12/1991 - 10/1993 Red paint changed;Upgraded rear suspension; Front air dam lower and further forward;15" wheels
Series III 10-1993 - ?/1995 New engines for NA producing 185 hp and for Turbo producing 245 hp;Bilstein shocks all round;Single piece rear wing;Round tail lights;Improved brakes (although may have been in Series II)
Series IV 1995 - 1998 Black roof paint scheme and different paint options available
Series V 1998 - 1999 More aggressive adjustable rear wing
New thin spoke wheels; NA engine upgraded to VVT model
A special model of the SW20 was released for the Australian market to celebrate the MR2's achievements in motorsport in that country. The MR2 Bathurst was released as a lighter, cheaper car facelifted with the 129 KW (173 hp) (!!!!!!!) 3SGE, increased high range torque, revised valve timing and exhaust system, increased compression ratio and carried the name of the great Aussie race track. These cars were campaigned in the 12 hour race at Mt Panorama, Bathurst and completed the entire race without changing brake pads ..... the only cars to do so! Like all MR2s sold new in Australia and New Zealand, the Bathurst model was only available in normally aspirated form.
Since the announcement in 1995 that the MKII MR2 was to cease production, prototypes for the new MR2 have been poping up at regular intervals at various Motorshows. The first of these was the MRJ. The MRJ appeared at several motorshows around the world, and while no official word was given by Toyota, many assumed it was the replacement for the MR2. It featured a VVT engine, electric hardtop, four-wheel steer, superstrut suspension, and many other new technology features.
The MRX was the next car on the motoring scene, having been unveiled at the Japan Motor Show in 1997 and predicted by many motoring magazines as the replacement for the MR2 ... with no news of the future of the MRJ. The MRX is a lightweight car with many of the fancy features of the MRJ having being removed.
Mk 3 Mr2 Spyder - ZZW30 1999-Actualidade
In 1999 the new MR2 was finally released in Japan. Throughout the world it will have different names: in Japan it's the MR-S; in the UK it's the MR2; in the USA it's the MR2 Spyder. Na França é o MR-S ;)
Especificações
ENGINE
Type Inline mid mounted, 4cyls, rear drive
Valve mechanism DOHC 16 valve VVT-i
Bore x stroke (cc) 79.0 x 91.5
Displacement (cc) 1794
Compression ratio 10:1
Max power bhp (kW) 138 (103) @ 6400rpm
Max torque lb.ft (Nm) 127 (170) @ 4200rpm
Battery - Volts/Amp hours 12/36
Alternator output - Watts 960
ACCELERATION
0-62mph (0-100km/h) 7.9 sec
0-400m 1 5.8 sec
Maximum speed 130mph (210km/h)
20-60km/h 4.3 sec
40-80km/h 5.l sec
60-100km/h 6.l sec
80-120km/h 10.6 sec
FUEL CONSUMPTION (L/l00km)
Combined 7.6
Urban 10.45
Extra-urban 5.95
Coefficient of drag 0.35
CO2 mass emission - g/km 178
DIMENSIONS
Overall length (mm) 3885
Overall width (mm) 1695
Overall height (mm) 1240
Wheelbase (mm) 2450
Track width (mm) front 1475
Track width (film) rear 1460
Minimum turning radius (m) 5
Fuel tank capacity (litres) 48
Kerb weight (kg) 975
Luggage capacity (m3) 0.09
SUSPENSION
Front MacPherson struts, anti-roll bar
Rear Dual-Link MacPherson struts, anti-rb
BRAKES
Front 10 inch ventilated discs
Rear 10 inch ventilated discs
STEERING
Type Power rack and pinion, electro hydraulic
Ratio 16.6:1
Turns lock to lock 2.7
TYRES & WHEELS
Wheel size F/R 5x6/1 5x6.5 inch alloys spoke
Tyre size F/R 185/55 VR15/205/50 VR15
Spare tyre Space-saver type
Especificações
ENGINE
Type Inline mid mounted, 4cyls, rear drive
Valve mechanism DOHC 16 valve VVT-i
Bore x stroke (cc) 79.0 x 91.5
Displacement (cc) 1794
Compression ratio 10:1
Max power bhp (kW) 138 (103) @ 6400rpm
Max torque lb.ft (Nm) 127 (170) @ 4200rpm
Battery - Volts/Amp hours 12/36
Alternator output - Watts 960
ACCELERATION
0-62mph (0-100km/h) 7.9 sec
0-400m 1 5.8 sec
Maximum speed 130mph (210km/h)
20-60km/h 4.3 sec
40-80km/h 5.l sec
60-100km/h 6.l sec
80-120km/h 10.6 sec
FUEL CONSUMPTION (L/l00km)
Combined 7.6
Urban 10.45
Extra-urban 5.95
Coefficient of drag 0.35
CO2 mass emission - g/km 178
DIMENSIONS
Overall length (mm) 3885
Overall width (mm) 1695
Overall height (mm) 1240
Wheelbase (mm) 2450
Track width (mm) front 1475
Track width (film) rear 1460
Minimum turning radius (m) 5
Fuel tank capacity (litres) 48
Kerb weight (kg) 975
Luggage capacity (m3) 0.09
SUSPENSION
Front MacPherson struts, anti-roll bar
Rear Dual-Link MacPherson struts, anti-rb
BRAKES
Front 10 inch ventilated discs
Rear 10 inch ventilated discs
STEERING
Type Power rack and pinion, electro hydraulic
Ratio 16.6:1
Turns lock to lock 2.7
TYRES & WHEELS
Wheel size F/R 5x6/1 5x6.5 inch alloys spoke
Tyre size F/R 185/55 VR15/205/50 VR15
Spare tyre Space-saver type
A Evolução:
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