MG repair Workshop Manual

the company's supervisor, Cecil Kimber. Best-known for the two-seat available sports vehicles, MG furthermore created saloons and coupés. Kimber had been a worker of William Morris; MG are the initials for Morris Garages.

The MG business was Morris's individual home until 1 July 1935 as he marketed MG to their holding team, Morris engines restricted, restructuring their holdings before issuing shares in Morris Motors to the people in 1936. MG underwent many alterations in ownership starting with Morris merging with Austin inside Uk Motor business restricted in 1952. MG became the MG unit of BMC in 1967 and thus an element regarding the 1968 merger that produced British Leyland Motor organization. Because of the beginning of 2000 MG ended up being part of the MG Rover team which entered receivership in 2005 while the assets together with MG brand name are bought by Nanjing vehicle Group for GB£53 million. Manufacturing restarted in 2007 in Asia, and soon after at Longbridge plant in the united kingdom in existing manufacturer MG Motor. The initial all-new design from MG in britain for 16 many years, the MG 6, is officially launched on 26 Summer 2011.

The original MG marque was in constant usage, with the exception of the period associated with Second globe War, for 56 many years as a result of its beginning in 1923. The production of predominantly two-seater recreations vehicles ended up being concentrated at a factory in Abingdon, some 10 kilometers south of Oxford. The British engine company competitors division has also been formulated in the Abingdon plant, creating numerous winning rally and race cars, until the Abingdon factory shut and MGB production stopped inside Autumn of 1980.

Between 1982 and 1991, the MG marque familiar with badge-engineer sportier variations of Austin Rover's Metro, Maestro, and Montego ranges. The MG marque wasn't revived with its own right until 1992, using MG RV8 – an up-to-date MGB Roadster with a Rover V8 engine, that was previewed at 1992 Birmingham Motor Show, with low-volume production commencing in 1993.

An additional revival came during summer of 1995, as soon as the high-volume MG F two-seater roadster was released.

The MG marque, along with the Rover marque, went along to the MG Rover team in-may 2000, whenever BMW "broke up" the Rover team. This arrangement had the return of MG badges on sportier Rover-based cars such as the MG ZT in 2001, with a revised MG F model, referred to as MG TF, established in 2002; however, all manufacturing stopped in April 2005 whenever MG Rover gone into administration.

The property of MG Rover are purchased by Chinese carmaker Nanjing car in July 2005, subsequently bought by SAIC in December 2007, which now work an UNITED KINGDOM subsidiary, MG engine.

The initial design, the 1924 MG 14/28 contains a unique sporting system on a Morris Oxford framework. This car design proceeded through a few models following the changes into the Morris. The first vehicle which can be referred to as a new MG, as opposed to a modified Morris had been the MG 18/80 of 1928 which have an objective created framework and also the earliest appearance of traditional straight MG grille. An inferior vehicles premiered in 1929 using first of a lengthy type of Midgets starting with the M-Type based on a 1928 Morris mild chassis. MG founded a name for itself in the early days of the activity of worldwide automobile race. Beginning before and continuing after globe War II, MG created a line of automobiles known as the T-Series Midgets which, post-war, had been exported globally, achieving greater profits than anticipated. These included the MG TC, MG TD, and MG TF, that are on the basis of the pre-war MG TB, and updated with each successive design.

MG departed from its prior type of Y-Type saloons and pre-war designs and circulated the MGA in 1955. The MGB was launched in 1962 to satisfy need for a far more contemporary and comfortable sports car. In 1965 the fixed-head coupé used: the MGB GT. With consistent changes, mostly to comply with more and more strict united states of america emissions and safety specifications, the MGB is produced until 1980. Between 1967 and 1969 a short-lived design called the MGC premiered. The MGC ended up being on the basis of the MGB body, but with a larger six-cylinder engine, and notably worse managing. MG furthermore started producing the MG Midget in 1961. The Midget ended up being a re-badged and a little restyled second-generation Austin-Healey Sprite. Into dismay of several enthusiasts, the 1974 MGB was the final model made with chrome bumpers because of newer US security regulations; the 1974½ bore dense black colored rubber bumpers that some advertised destroyed the lines of automobile. In 1973, the MGB GT V8 was released utilizing the ex-Buick Rover V8 motor and ended up being built until 1976. As with the MGB, the Midget design is regularly changed through to the Abingdon factory closed-in October 1980 therefore the last of number is made. The badge has also been placed on variations of BMC saloons like the BMC ADO16, that has been also available as a Riley, but with the MG pitched as somewhat even more "sporty".

The marque resided on after 1980 under BL, being used on some Austin saloons such as the Metro, Maestro, and Montego. In New Zealand, the MG badge even appeared regarding the late 1980s Montego home, called the MG 2.0 Si truck. There was a brief competitive record with a mid-engined, six-cylinder type of the Metro. The MG Metro completed production in 1990 in the introduction of a Rover-only design. The MG Maestro and MG Montego remained available for sale until 1991, when production of these versions is pruned back purchase for Rover to concentrate regarding the more modern 200 show and 400 Series. Powerful Rover Metro, 200 and 400 GTi designs choose to go available for sale in late 1989 and throughout 1990 while the MG type of the Metro is discontinued in 1990 in addition to variations of Maestro and Montego are axed in 1991.

The Rover Group revived the two-seater with all the MG RV8 in 1992. The all-new MGF went on sale in 1995, getting initial mass-produced "real" MG low rider considering that the MGB ceased production in 1980.

After the might 2000 buy associated with the MG and Rover brands because of the Phoenix Consortium therefore the forming of the new MG Rover team, the MG range is extended in the summer of 2001 aided by the introduction of three recreations versions based on the modern range of Rover automobiles. The MG ZR ended up being in line with the Rover 25, the MG ZS regarding the Rover 45, in addition to MG ZT/ZT-T regarding Rover 75.

The MG Rover Group bought Qvale, which had taken over improvement the De Tomaso Bigua. This automobile, rebranded the Qvale Mangusta and already approved for sale in the usa, formed the basis regarding the MG XPower SV, an "extreme" V8-engined low rider. It had been uncovered in 2002 and went on sale in 2004.

The MGB try a two-door sports vehicle manufactured and advertised by the British Motor company, later on British Leyland, as a four-cylinder, soft-top roadster from 1962 until 1980. Alternatives include the MGB GT three-door 2+2 coupé, the six-cylinder roadster and coupé MGC, and eight-cylinder 2+2 coupé, the MGB GT V8.

Changing the MGA in 1962, creation of the MGB and its own variations continuing until 1980, attaining purchases when it comes to MGB, MGC and MGB GT V8 blended of 523,836 cars. The MGB bodyshell had been reprised in modified form with a limited run of 2,000 MG RV8 roadsters.

Motor: All MGBs utilized the BMC B-Series system. This motor was really an enlarged type of that used within the MGA with displacement being increased from 1622 cc to 1798 cc. The earlier automobiles used a three biggest bearing crankshaft, 18G-series. In February 1964 positive crank-case breathing is launched and system prefix changed to 18GA, until October 1964, when a five-bearing crankshaft design was launched, system prefix became 18GB. Horse power had been rated at 95net bhp on both 5 biggest bearing and earlier in the day 3-bearing cars with top energy coming at 5400 rpm with a 6000 rpm redline. Torque production on MGB have a peak of 110 lb·ft gas intake ended up being around 25mpg. United States specification automobiles saw power fall in 1968 using the introduction of emission requirements in addition to usage of atmosphere or smog pumps. In 1971 UK spec vehicles however have 95 bhp at 5,500 rpm, with 105 lb·ft torque at 2500 rpm. System prefix became 18V plus the SU carburettor needles were changed for explanations of recent emission laws, under ECE15. By 1973 it was 94 bhp; by 1974 it had been 87, with 103 lb·ft torque; by 1975 it was 85 with 100 lb·ft. Some Ca specification cars created best around 70 hp because of the belated 1970s. The compression ratio was also decreased from 9 to 1 to 8:1 on US spec cars in 1972.

Carburation: All MGBs from 1963 to 1974 put twin 1.5-inch SU carburettors. US spec automobiles from 1975 put an individual Stromberg 1.75-inch carburettor attached to a combination intake–exhaust manifold. This significantly paid off energy including generating longevity troubles due to the fact catalytic converter tended to break the intake–exhaust manifold. All MGBs made use of a SU-built electric gasoline pump.

Gearbox:: All MGBs from 1962 to 1967 put a four-speed manual gearbox with a non-synchromesh, straight-cut earliest gear. Optional overdrive is readily available. This gearbox was predicated on which used when you look at the MGA with some lesser updates to handle the additional production regarding the larger MGB motor. In 1968 the early gearbox had been replaced by a complete synchromesh unit in line with the MGC gearbox. This device was designed to handle the 150net bhp of this 3-litre system associated with MGC and had been therefore over-engineered when mated with all the standard MGB B-Series motor. Actually, equivalent transmission was also utilized in the 3.5-litre V-8 type of the MGB-GT-V8. A computerized three-speed transmission was also supplied as a factory option, but proved to be fairly unpopular.

Electrically engaged overdrive gearboxes were an offered solution on all MGBs. The overdrive device was operational in third and fourth gears nevertheless the general proportion in 3rd equipment overdrive ended up being approximately just like fourth gear direct. The overdrive unit is involved by a toggle turn located on the dashboard. The turn had been moved to the top the gearshift knob in 1977. Overdrives were suited to significantly less than 20% of all MGBs, which makes it a tremendously desirable feature.

There were three several types of overdrive transmissions fitted to the MGB.

1962–1964, 1965–1967

Laycock Kind D OD
a hole when you look at the bell housing where the beginner nostrils pokes through
"guard" formed accessibility address
1020 TPM for OD and 1040 TPM for non-OD

Note: The gearbox input shaft, flywheel and system backing plate were altered because of the introduction of 5 main bearing motor in 1965. For that reason, the transmission for a 3 biggest bearing engine differs from its subsequent counterpart.

1968 through 1974.5

Laycock Kind LH OD
Rectangular shaped accessibility cover
Oval clutch hand boot
Dipstick
Ebony label from the OD solenoid address stamped "22/61972"
1280 TPM for OD and non-OD
Speedometer drive gear is blue
Speedometer driven equipment was white with 21 teeth



1974.5 through 1980

Laycock Kind LH OD
Rectangular formed access cover
Square clutch hand boot
Part fill connect
Azure label on the OD solenoid cover stamped "22/62005"
1000 TPM for OD and non-OD
Speedometer drive gear are red
Speedometer driven gear is red with 20 teeth

Note: Overdrive runs in 4th equipment just in devices made from February 1977 onward.
A sectioned MGB showing the trunk axle and differential

Rear axle: Early MGBs utilized the "banjo" means differential held over from the MGA utilizing the back axle proportion decreased through the MGA's 4.1 to 3.9 to at least one. tires.) MGB GTs initially started utilizing a tube-type rear axle in 1967. This device had been substantially more powerful being, like the later gearbox, made for the three-litre MGC. All MGBs made use of the tube-type axle from 1968.

Brake system: All MGBs were fitted with 11-inch solid disc brakes regarding the front with drum brake system on the back. Leading brake calipers were manufactured by Girling and put two pistons per caliper. The braking system program regarding the MGB GT had been the same as the Roadster apart from a little larger backside brake cylinders. A single-circuit hydraulic system was used before 1968 whenever dual-circuit had been put in on all MGBs to comply with United States laws. Servo support wasn't standard until 1975. Most modern-day and contemporary testers has commented in the most hefty braking system pedal stress had a need to stop the non-servo-assisted cars.

Electric system: The MGB at first have a very quick electrical program. Dash-mounted toggle switches controlled the lighting, air flow lover, and wipers with just the direction signs being installed on a stalk regarding steering line. The ignition switch was also mounted on the dash. Like the MGA, the MGB applied two 6-volt electric batteries wired in show to give a 12-volt good earth configuration. The battery packs were placed under a scuttle panel behind the chairs making accessibility a bit of a challenge nevertheless location provided exemplary fat distribution and therefore improved managing. The charging system used a Lucas dynamo. Later MGBs had considerable adjustment on electric system such as the utilization of an individual twelve-volt power, a big change from good to bad planet, safety-type toggle switches, an alternator in the place of the dynamo, further caution lighting and buzzers, and having most typical functionality moved to steering line stalks.

Tyres: whenever making the factory, all non-V8 MGBs are originally fitted with Pirelli Cinturato tyres. Cross-ply tyres were standard until 1972 with radials being recommended. From 1972 there have been two different radial sizes factory suited to newer vehicles, based perhaps the vehicle is a roadster, or a GT,. Using 1974.5 arrival of the rubber bumper vehicles the factory fitted tyre dimensions was simplified to 165/80x14 for many automobiles, whether the vehicle was a Roadster or a GT, also irrespective of the wheel type. Afterwards throughout the rubber bumper manufacturing period, alloy rims had been introduced on various minimal edition brands - aided by the final one thousand LE systems becoming the very last vehicles to leave the Factory with alloy wheels which, even though same 5”x14” rim size as the RoStyle, have 185/70x14 radials installed. This wide tyre had not been factory suited to wire tires. The factory built V8s had been fitted with complete profile 175HR14 tyres.

The roadster was the first of MGB range to be created. The body is a pure two-seater but a little back chair had been an unusual alternative at one-point. By simply making best utilization of area the MGB surely could promote more passenger and baggage rooms compared to earlier MGA while 3 inches smaller overall. The suspension has also been gentler, offering a smoother ride, and the larger system offered a slightly higher top speed. The four-speed gearbox was an uprated form of the main one utilized in the MGA with an optional overdrive transmission. Wheel diameter dropped from 15 to 14 inches.

In belated 1967, sufficient changes were introduced when it comes to factory to determine a level II model when it comes to 1968 design seasons. Adjustment included synchromesh on all 4 gears with revised ratios, an optional Borg-Warner automated gearbox, a new rear axle, and an alternator in the place of the dynamo with an alteration to a negative earth system. To support the latest gearboxes there have been big modifications toward sheet steel in the floorpan, and a brand new flat-topped transmission tunnel.

To satisfy United States safety regulations, later North American tourers have three windscreen wipers rather than just two, and also received a plastic and foam rubber covered "safety" dashboard, dubbed the "Abingdon pillow". More areas proceeded using metallic dashboard. Rubery Owen ROstyle tires are launched to displace the previous pushed metallic versions in 1969 and reclining seating were standardized. 1970 in addition spotted a fresh front side grille, recessed, in black aluminum. The more traditional-looking polished grille came back in 1973 with a black "honeycomb" insert. In united states, 1970 saw split back bumpers with the number-plate in between, 1971-74 returned to the earlier single-piece full-length style chrome bumper.

More changes in 1972 were towards the indoor with a brand new fascia.

To satisfy effect laws, 1974 US models spotted the chrome bumper over-riders changed with oversized plastic ones, nicknamed "Sabrinas" after the well-endowed Uk celebrity. When you look at the second half of 1974 the chrome bumpers had been replaced altogether, which are considered 1974.5 products. An innovative new, steel-reinforced black colored plastic bumper at the front end incorporated the grille location and, providing an important restyling towards B's nostrils, and a matching back bumper finished the change.

Brand new US headlight level laws also suggested the headlamps were now also reduced. Without renovate the leading associated with automobile, British Leyland lifted the automobile's suspension system by 1-inch. This, in combination with the latest, far heavier bumpers led to notably poorer control. For 1975 model year only, the front anti-roll bar is removed as a cost-saving measure. The damage carried out by the Brit Leyland response to US legislation is partly alleviated by changes into suspension system geometry in 1977, when a rear anti-roll bar was made standard equipment on all designs. US emissions laws in addition paid off horsepower.

In March 1979 British Leyland going producing black colored coated minimal version MGB roadsters the United States market, designed for an overall total of 500 instances. Considering a higher demand regarding the minimal edition design, production ended with 6682 examples. The uk gotten bronze painted roadsters and a silver GT design restricted editions. The production run of homemarket brief edition MGBs had been divide between 421 roadsters and 579 GTs.

The past MGB Roadster off the manufacturing line at Abingdon returned to Abingdon County Hall Museum on 1 December 2011 with British Motor traditions. It had been raised up 30 ft through a primary floor screen of the quality I detailed design with inches to spare and from now on forms the main range on display however gallery.

Focus on a successor for the MGB had been undertaken as long ago as 1968, but British Leyland have pulled the plug thereon task by the end of 1970. If the Abingdon factory finally closed-in the autumn of 1980, British Leyland couldn't change it.



In 2001, three years following the publish regarding the Rover 75 and less than annually following the de-merger of MG Rover from BMW, the MG ZT and MG ZT-T were established. During the vehicles' development, the designs are codenamed X10 and X11 the saloon and estate variations correspondingly. The fundamental shape and styling of this MG ZT remained the same as for Rover 75 but with modifications to your front side bumper, now with a built-in grille, and details changes including colour coding for the chromed waistline, a bootlid plinth and different alloy wheels and tyres models. The inside featured revised seats and dashboard treatment with latest tool faces. Engineering adjustment ranged from uprated suspension and brake system to revised engine tuning for petrol and diesel models. Development of the MG ZT ended up being lead by Rob Oldaker, Product Developing Director, with styling modifications undertaken by Peter Stevens, who was simply earlier accountable for the styling of this McLaren F1 and X180 form of the Lotus Esprit.
Flexible electronics build

The entire in-car activities system will be based upon a rather versatile automotive computer program from BMW. As a result, the MG ZT can be simply enhanced using the latest BMW technology like BMW's Bluetooth System, the DVD centered Navigation program, and Widescreen showcases as well as BMW's CD changers that play MP3s
V8
2003 MG ZT-T+ 190 home

In 2003, the 260 type of the vehicle was released, using a 4.6 litre V8 from Ford Mustang number. The model is converted from front-wheel drive to rear-wheel drive and had been mostly engineered by motorsport and engineering providers Prodrive before becoming finished by MG. The 4.6 version is certainly a true Q-car. Besides the badges, the only aesthetic huge difference externally between your 260 also ZTs are the quad exhausts.
XPower 385

The XPower 385 ZT, was a set of concepts created by MG-Rover to exhibit the "Ultimate" version of the 260 V8. The 385 ended up being designed with a 385PS 4 device Ford Modular V8. An equivalent system which was fitted in the 385 idea vehicle and the "ultimate" ZT was later on built in the MG SV. The introduction of the vehicles had been undertaken by Prodrive but the cars never ever made an appearance as MG-Rover closed-in 2005. The cars are fitted with an extensive bodykit and featured a spoiler regarding the rear of car.
XPower 500

Before the ZT 260 was launched, MG created an unique idea vehicles: the MG XPower ZT 500. This car ended up being meant to show off what MG may do because of the ZT's framework and is never ever designed for mass production. The XPower ZT is equipped with a 500PS supercharged 4.6 litre Ford Modular V8 similar the engine fitted to the 260 ZT. The XPower 500 have a far more aggressive wide bodykit with bigger spoiler similar the 385 idea vehicle. The vehicle is conserved because of the MG holders club and rebuilt employing their considerable places and expertise. The automobile was allocated VIN no 001.
Renovation

During early 2004, MG-Rover facelifted the style associated with ZT and ZT-T to a less vintage looks, on top of that once the Rover 75 gotten a facelift. Even though the Facelift don't showcase any mechanical differences, the changes had been merely aesthetic additionally the main modifications to the facelift included the replacement of this double headlamps with a new an obvious single headlamp product.