|MITSUBISHI Lancer Turbo EX 2000 GSR 4G 62b|
|Lancer 2000 Turbo
is a new car for the Eightie's
The Mitsubishi Lancer 2000 Turbo has been introduced for five principal reasons -
* it meets the needs of a growing sector of the market, the buyer who demands high performance and sophisticated handling, from a fuel-efficient, functional, versatile car in an affordable price range - both initial cost and operating expenses.
* to demonstrate that Mitsubishi has the skills and technology to develop the fastest, most capable compact sports sedan in the world, and can do so within the confines of an existing mode.
* it demonstrates Mitsubishi1s high levels of technological innovation and standards of expectation.
* to demonstrate the superior qualities inherent in the standard model.
* it provides the consumer with a close parallel in all mechanical ways to the latest Mitsubishi Lancer 2000 Turbo rally cars.
Obviously, Mitsubishi have based the Lancer 2000 Turbo on their standard compact family sedan, the Lancer.
However, Mitsubishi Lancer 2000 Turbo cannot fairly be considered just as a hotted-up Lancer. The high-performance edition uses many reinforced, special duty or different components from the standard mode, and specifications are substantially dissimilar. The extent of the mechanical variations alone is indicated by the chart on pages 20 and 20, which compares 2000 Turbo with the top of the line regular Lancer - 1600 GSR; over forty performance-oriented variations are listed .
In terms of performance. efficiency. driveability. and even visual identity, Mitsubishi Lancer 2000 Turbo is a totally new model.
Lancer 2000 Turbo Co-ordinated efficiency
In this new car, Mitsubishi designers and engineers disclose much of the companies thinking about car development. It shows in the very thorough approach to extracting exceptional efficiency. It is reflected by the careful redevelopment of all relevant components to balance the greater demands placed on a high performance car. There is the great attention paid to ensuring that the power is fully matched by precisely responsive, surefooted handling and high inherent stability.
And all this engineering expertise is executed and packaged into a car where the detail finish, ease of driving and servicing, interior space, ride comfort, equipment and mechanical refinement including a remarkable level of silence can delight not just the high performance enthusiast, but any driver with the slightest response to an object of quality. Mitsubishi Lancer 2000 Turbo is an exercise in detail perfection, co-ordinated to create balanced overall efficiency.
|The Mitsubishi Lancer
In the early 1970's Mitsubishi saw in the newly introduced Lancer - a compact economical family sedan with:-
an unusually high level of rugged durability and driveability to make it ideal for international motor rallying. Using production-based cars, rally drivers immediately achieved rather remarkable results -1973 Australian Southern Cross Rally - 2nd, 3rd, 4th
1974 Australian Southern Cross Rally - 1st
1974 East African Safari - 1st
1975 Australian Southern Cross Rally - 1st
197S East African Safari - 1st in class
1976 Australian Southern Cross Rally - 1st
1976 East African Safari - tat
1977 Bandama Rally, West Africa - 1st
Turbocharged Silent Shafts' 4 cylinder ohc, with full computer-coordinated and controlled fuel injection, ignition and anti-knock protection. Mitsubishi Lancer 2000 Turbo's engine is based on the 4G63 Silent Shafts, 4 cylinder ohc unit recently launched in the 1981 Galant and Sapporo 2 litre models. It incorporates a number of special features, such as 17kg less weight and more compact size than the previous 2 litre, uses cogged belts for silent camshaft/Silent Shafts operation and adopts the slightly undersquare bore/stroke layout of 85mm x 88mm to retain wide-range torque.
The engine was designed with high performance, turbo application in mind oilways, coolant circulation, bearing areas and stress absorption are all generously provided for.
|More POWER here than you might think!!|
Mitsubishi-developed 2nd generation turbocharger
Working in conjunction with Mitsubishi Motors engineers. the Research and Development section of the associate company, Mitsubishi Heavy Industries Ltd., devised a substantially superior performing turbocharger. It introduces two main advantages:
* ultra efficient turbine and compressor blades(only 65mm in diameter) and very low rotating mass bring exceptionally responsive boost from very low revs.
* very compact size overall size, and only 8kg.
The response from this new turbocharger begins building from very low revs. A modified camshaft is used to take advantage of this wide response spectrum by flattening the torque to widen the useful power range.
Turbocharging has enabled Mitsubishi to extract very high performance without the penalty of a large(and heavy) engine. The Lancer engine produces maxima of 170 ps/5500 rpm and 25kg-m/3500 rpm.
Wastegate / Relief valve protection
Three independent control mechanisms provide sophisticated regulation of turbocharger operation and pressure.
A waste gate, operated by excess turbo boost, allows some exhaust gas to bypass the turbine, so that turbo speed (and therefore inlet manifold pressure) can drop. Its control circuit includes a thermovalve and a supplementary pressure-sensing chamber, so that full boost cannot be obtained when engine temperature is below 405c - this protects an inadequately warmed-up engine for prematurely applied full power.
For supplementary pressure release control, a spring-loaded relief valve allows excess manifold pressure to be bypassed back into the intake. The valve also operates an electric switch, so that the 'excess boost' indicator in the boost meter provides the driver with a warning signal. At the same time the boost sensor is sending signals to override the injection and liming electronic control systems,
Wastegate, pressure relief valve and electronic override - three separate safeguards against turbo malfunction, to protect the engine.
Mitsubishi's unique new Electronic Control Injection introduces a number of new developments -
* air intake measured ultrasonically. This eliminates the occasionally erratic or sluggish response of the mechanical air flap system.
* the ultrasonic signals are modulated by Karman vortex patterns, created in the airflow by a smell, fixed block, They are changed to digital pulses by a converter located in the chamber attached to the air intake - an ideally cool place.
* fuel is distributed by two injectors which operate sequentially, coordinated by the injection control computer.
* injection is not continuous, but in a series of pulses, varied in duration and frequency by the computer in calculated response to air-flow rate, engine temperature, air temperature, throttle position, throttle Opening speed and battery voltage.
* a new distributor, which reacts to positive manifold pressures as well as being vacuum sensitive. This provides a wider range of ignition timing control.
* an electronic boost sensor detects variations in turbocharger boost pressure, relating it to the ignition timing and providing a signal to operate the boost pressure indicator mounted at the front of the floor console.
* fail-safe function - should any electronic malfunction occur, ignition timing is automatically retarded
to enable continued driving without risk of engine damage through pre-ignition.
ECI(manufactured under Bosch's basic patent)
Continuous Pressure fuel pump
Located in the fuel tank is a very sophisticated fuel pump. Its electric motor rotates a roller vane impeller, so that the pressure pulses of electro-magnetic and mechanical pumps are eliminated. The resultant very even pressure supply aids accurate fuel measurement by the ECI system.
Jnjection control is optimally coordinated with the electronic ignition while an anti-knock system provides highly effective protection from pre-ignition by automatically delaying ignition timing as the onset of knocking approaches.
The knock sensor, positioned centrally on the underside of the inlet manifold, is a sealed piezoelectric element which uses the strain gauge principle to weight into an electric signal.
Efficency-related Modifications for Lancer 2000 Turbo
* extra-strong cogged timing belt
* bowl crown pistons
* modified piston ring oil grooves
* heavy duty piston pins
* heavy duly clutch with increased lining area
* dowel-pinned flywheel bolt
* high-efficiency oil cooler, with fast warm-up by-pass
* oil-temperature warning system - 13t5c
* oil-jet under-piston cooling
* high-capacity oil pump
* electric fan
* free-flow exhaust system
* dual fuel filters - for the in-tank pump and in the ECI supply line
|AERODYNAMICS - DESIGNING FOR
The Lancer sedan contours were evolved from extensive wind tunnel testing - Mitsubishi Motors being fortunate in having access to the sophisticated facilities used by Mitsubishi Heavy Industries for jet aircraft development.
In the original design, very careful attention was paid not just to high air penetration and low drag, but also in creating the octagonal cross-section shape that has high resistance to the influence of crosswinds, to aid high speed stability.
or the new Lancer 2010 Turbo, these inherently efficient aerodynamics are further refined, mainly to create particularly stable high speed behavior. This has been done with
* an integrated air dam/front bumper, its high efficiency reflecting its extensive development. This unit creates a low pressure tone under the car, especially in the front wheel area, The result - increased front grip and accuracy of high speed steering response.
* a rear spoiler, that catches the rearward airflow, increasingly 'pressing down' the rear of the car as speed rises. The result - increased rear wheel grip and directional stability. (The leading face is contoured into a hollow, with a shoulder at each edge, to form an air trap, making this spoiler as efficient as a conventional unit 51mm higher.)
This skilled balance between Cd and Cl - drag and lift co-efficient - shows up markedly during fast driving. There are few cars in any class which retain such superbly consistent feel and predictable handling response as speed rises higher and higher. Inherently stable balance also makes correction faster and easier, and contributes greatly to increased safety.
Anti-buffet front window supports. A unique detail touch! An inconspicuous projection on the leading edge of each front window frame supports the glass even when the window is opened slightly. This greatly reduces the buffeting noise which opened windows usually suffer at higher speeds.
This was tackled from all aspects - structural strength, suspension, tyres, steering, brakes - and the aerodynamics described in the preceding pages.
Potential rally and high performance applications were already in mind when the present standard Lancer was being developed, and therefore it has very generous reserves of structural strength.
For Lancer 2000 Turbo usc, therefore, the only modifications are those necessary to accommodate the front air dam , reshaped firewall and rear floor to accommodate special components, and reinforced (collision resistant) front doors.
Suspension - stability with comfort
Front - Lancer 2000 Turbo's front suspension retains the MacPherson strut layout of the standard, but uses specially modified springs with higher constant, sealed gas shock absorbers of increased capacity and substantially tighter control, and modified lower arms with a different lower ball joint shape.
Rear - Mitsubishi's much-praised 4 link assembly is used, along with a 1 piece rear axle, Wheel alignment is unusually precise regardless of driving conditions or cornering stresses - no camber variations to disturb consistent tyre adhesion, nor rear steering induced by a Panhard rod. Again, modified springs are used, and heavy duly sealed gas shock absorbers,
Heavy Duty Powertrain
To ensure long-term reliability even under extended high-power, high-speed driving conditions, the entire drive line uses heavy duty components -
* extended-length journals in the universal joints
* large diameter propeller shafts
* increased diameter differential carrier flange
* longer rear axle splines
* thicker rear axle driveshaft
Tyres - purpose-designed
As with many high performance cars today, it was found by Mitsubishi that stock tyre designs failed to take full advantage of the car's true potential. Extensive research was therefore conducted into structures, rubbers and fabrics until a tyre characteristic was developed which effectively contributed to performance, handling response, stability and low road noise - and was proven to have an excellent life expectancy under enthusiastic driving conditions.
The standard Lancer 2000 Turbo specification includes this tyre type - Bridgestone 175178 HR 14. The wider, lower-profiled Yokohama 185165 HR 14 is similarly produced to this exclusive formula.
Steering - feel and response
Lancer 2000 Turbo uses the newly introduced heavy duty steering box that hat appeared on the 1911 2 litre Galant and Sapporo. It is a variable ratio, recirculating ball unit with the cross shaft supported by three sets of bearings. The very low internal friction enhances feedback of road feel without transmitting excessive shock, and allows instant, precise response.
Front wheel geometry has been adapted to compensate for the emphasis on extended high speed running and the effects of the front air dam and special tyres. King pin inclination is increased; camber, castor and toe-in are reduced.
Large diameter ventilated discs on all 4 wheels, vacuum power-assistance, tandem master cylinders and separate front and rear hydraulics create the potential for consistently efficient, repeated high speed stops. The front air dam ducts air to aid cooling of the front discs.
The result overall is spectacular. Mitsubishi Lancer 2000 Turbo rides on a deep, supple, secure suspension that remains comfortable and stable regardless of speed. The car has a superbly reassuring sense of command, control, and poise; handling is effortless, accurate, as if it is running on rails, and braking is more than equal to the fastest, most demanding alpine downhill imaginable.
|Go to Momo Stering|
|For the driver -
information and control
There needed to be few changes to re-equip the standard Lancer for 2000 Turbo use. Already instruments are binnacled immediately below one a natural line of vision for driving, so that a brief eye movement covers them. In fact the large, clearly marked dials can be observed without actually looking away from the road, by using peripheral vision. The turbo pressure gauge with excess pressure warning light is ahead of the gear lever, on the floor console; otherwise all instruments are grouped closely, to fall within the rim of the steering wheel,
Controls - the multi-use levers for lights+wash/wipe, the stubby gear lever, the handbrake, and supplementary controls like ventilation and seat slide/recline adjusters, all have that typical Mitsubishi engineered feel, and feel conveniently, logically located, The special steering wheel has a thick, softly textured rim, very comfortable to hold; the gear lever knob is in the same urethane material,
Passengers - cocooned in an earthbound jet
The octagonal cross-sectioned body design that helps defect side winds also results in increased hip to shoulder space, and, although external dimensions are modest, Lancer 2000 Turbo has a full 5 adult capacity. Further space has been created by using recessed door trims and side-mounted front seat sliders doors make it an easy car to enter and leave. Deep, contoured high density urethane foam over special suspension springs results in seating that is both cushioning and supportive. Upholstery is in high quality velour, and under each front seat is a convenient slide-out oddments tray. Ventilation - flow through - is highly efficient and easily controllable. This is important, because at higher speeds an open window causes unpleasant buffeting noises. With the windows closed, the car's very clean aerodynamic lines help contribute to very peaceful progress, so that occupants can be comfortably unaware of the considerable distances being covered so quickly.
The healer has three advantages over those in many cars. It is an air-mix unit, providing instant response to adjustment and therefore making fine regulation very easy. Dual hi-level operation is possible, so that even the defrost mode cool air is available at face level, and the controls are clearly marked with obviously understandable symbols.
Roomy boot squared, for usable space.
The deep. wide boot has special sliding hinges and ultra-shallow rear lamps so that obstructions to usable space are minimal.
New Mitsubishi Lancer 2000 Turbo. The world's fastest compact sedan demonstrates that contemporary conservation demands can be met through exemplary efficiency, to create superior new standards of driveability and sporty motoring pleasure.
Differences from LANCER 1600 CSR
Section Construction Specification
Engine * 4G63 (2000 cc) Turbo-ECI engine
Transmission * KM132-A (heavy-duty) S-speed
* Clutch actuation - hydraulic Power train
* Propeller shaft diameter increased to 75 mm
* Universal joint journals lengthened 12.8 mm
* Differential carrier flange increased 15 mm
* Axle diameter increased to 27 mm
* Heavy duly scaled gas shock absorber struts
* Heavy duty springs
* Modified lower ball joints
* Tension rod bushes upgraded
* Anti-roll bar diameter increased to 24 mm
* Heavy duty sealed gas shock absorbers
* Heavy duty springs
* Front brakes: Ventilated discs 256 mm die.
* Rear brakes: Ventilated discs for 247 mm dia.
* Master cylinder bore diameter increased 3. 18 mm
* Vacuum booster installed on the right side of LSD model
* Vacuum booster heat insulator board
* Three bearing cross-shaft supported heavy duty steering box
* Modified camber, caster, toe-in
* Idler arm bush rigidity increased
* Large radiator (490 x 400 x 32 mm) with shroud and electric fan
* Oil cooler
* Reshaped condenser tank
Section Construction Specification
* Hydraulic clutch Rue] system
* Electric pump
* Fuel tank with piping for ECI
* Exhaust system for low power loss - includes higher Capacity muffler
* 175/7t HR 14 tyres, specially developed
* 185/65 HR 14 tyres, specially developed (opt.)
* 5.5 J-14 (24 mm offset) wheels
* Large air dam and integrated bumper
* Rear spoiler (flexible urethane)
* Additionally reinforced front doors (collision resistant)
* Reshaped firewall, relocated vacuum booster, added hydraulic clutch, redesigned vacuum booster heat insulator board, added ECI microprocessor
* Reshaped front-end structure
* Reshaped rear floor (electric pump added)
* ECI microprocessor and shield cover
* Electrical components for turbocharged engine (register, boost sensor units, washer tank)
Ventilation * Redesigned heater (partially redesigned heater units, blower assembly and ducting)
Meters * Meters and warning lights for turbocharged engine (oil temperature, boost indicator and windscreen washer fluid level)