Land Rover Defender Information

The Land Rover Defender (initially called the Land Rover Ninety and Land Rover One Ten) is a British four-wheel drive off-road vehicle developed in the 1980s from the original Land Rover series which was launched at the Amsterdam Motor Show in April 1948.

After a continuous run of 67 years production finally ended on 29 January 2016 when the last Land Rover Defender, with the number plate H166 HUE, rolled off the production line. A special edition Defender Works V8, with 400bhp, was announced in January 2018. Until 2020 the Defender was last sold in the US in 1997, after which safety regulations prohibited its sale in North America.

The all-new 2020 Land Rover Defender made its global debut in September 2019 and is initially offered with two wheelbase options.

The coil-sprung Land Rover was introduced in 1983 as "Land Rover One Ten", and in 1984 the "Land Rover Ninety" was added – the numbers representing the respective wheelbases in inches. (In fact the Ninety was nearer 93 inches at 92.9".) The number was spelled in full in advertising and in handbooks and manuals, and the vehicles also carried badges above the radiator grille which read "Land Rover 90" or "Land Rover 110", with the number rendered numerically. The Ninety and One Ten replaced the earlier Land Rover Series, and at the time of launch, the only other Land Rover model in production was the Range Rover.

In 1989, a third model was brought out by Land Rover to be produced in parallel with the other two: the Land Rover Discovery. To avoid possible confusion, the 1991 model year Ninety and the One Ten were renamed the "Defender 90" and "Defender 110". These carried front badges that said "Defender", with a badge on the rear of the vehicle saying "Defender 90" or "Defender 110". The most recent model, from 2007–2016, still featured the space above the radiator for the badge but was blank. Instead it had "Land Rover" spelled across the leading edge of the bonnet in raised individual letters, in keeping with the Discovery and Freelander. At the rear was a new style of "Defender" badge with an underlining "swoosh". On these last models there are no badges defining the wheelbase model of the vehicle.

The 127-inch (3,226 mm) wheelbase Land Rover 127, available from 1985, was always marketed with the name rendered numerically. Following the adoption of the Defender name, it became the "Defender 130", although the wheelbase remained unchanged.

The North American Specification (NAS) Defender 110 sold for the 1993 model year carried a badge above the radiator grille which read "Defender", whereas the NAS Defender 90 sold for the 1994 to 1997 model years had "Land Rover" spelled across the top of the radiator grille in individual letter decals. NAS Defenders also carried a cast plaque on the rear tub in the original style of the Series Station wagons with "Defender 110" or "Defender 90" below the Land Rover lozenge and the vehicles unique limited edition production run number.

Production of the model now known as the Defender began in 1983 as the Land Rover 110, a name which reflected the 110-inch (2,800 mm) length of the wheelbase. The Land Rover 90, with 93-inch (2,362 mm) wheelbase, and Land Rover 127, with 127-inch (3,226 mm) wheelbase, soon followed.

Superficially there is little to distinguish the post-1983 vehicles from the Series III Land Rover. A full-length bonnet, revised grille, plus the fitting of wheel arch extensions to cover wider-track axles are the most noticeable changes. Initially the conservative engineering department insisted that the Land Rover was also available with a part-time 4WD system familiar to derivatives produced since 1949. However, the part-time system failed to sell and was quickly dropped from the options list by 1984. While the engine and other body panels carried over from the Series III, mechanically the 90 and 110 were modernised, including:

The 110 was launched in 1983, and the 90 followed in 1984. From 1984, wind-up windows were fitted (Series models and very early 110s had sliding panels), and a 2.5-litre (153 cu in), 68 horsepower (51 kW) diesel engine was introduced. This was based on the earlier 2.3-litre (140 cu in) engine, but had a more modern fuel-injection system as well as increased capacity. A low compression version of the 3.5-litre (214 cu in) V8 Range Rover engine improved performance. It was initially available in the 110 with a Range Rover LT95 four-speed transmission with integral transfer case and vacuum operated differential lock, then later in conjunction with a high strength "Santana" five-speed transmission.

This period saw Land Rover market the utility Land Rover as a private recreational vehicle. While the basic pick-up, 4x4 and van versions were still working vehicles, the County 4x4s were sold as multi-purpose family vehicles, featuring improved interior trim and more comfortable seats. This change was reflected in Land Rover starting what had long been common practice in the car industry — detail changes and improvements to the County model from year to year in order to attract new buyers and to encourage existing owners to trade in for a new vehicle. These changes included different exterior styling graphics and colour options, and the introduction of new options, such as radio-cassette players, Rostyle wheels, headlamp wash and wipe systems, as well as accessories such as surfboard carriers and bike racks. The switch from leaf spring to coil spring suspension was a key part of the new models success. It offered improved off-road ability, load capacity, handling and ride comfort.

From 1983, Land Rover introduced a third wheelbase to its utility line-up, a 127-inch (3,226 mm) wheelbase vehicle designed to accommodate larger, heavier loads than the 110. Called the "Land Rover 127", it was designed specifically with use by utility and electrical companies in mind, as well as military usage. In its standard form, it is a four-door six-seater consisting of the front half of a 110 4x4, and the rear of a 110 high-capacity pick up (HCPU). Logic was that this allowed a workcrew and their equipment to be carried in one vehicle at the same time. The 127 could carry up to a 1.4 tonnes (1.4 long tons; 1.5 short tons) payload, compared to the 1.03 tonnes (1.01 long tons; 1.14 short tons) payload of the 110 and the 0.6 tonnes (0.59 long tons; 0.66 short tons) of the 90.

Land Rover 127s were built on a special production line, and all started life as 110 4x4 chassis (the model was initially marketed as the 110 crew cab, before the more logical 127 name was adopted). These were then cut in two and the 17 inches (432 mm) of extra chassis length welded on before the two original halves were reunited. These models did not receive their own dedicated badging like the other two models: instead they used the same metal grille badges as used on the Series III 109 V8 models, that simply said "Land-Rover".Although the standard body-style was popular, the 127 was a common basis for conversion to specialist uses, such as mobile workshops, ambulances, fire engines and flatbed transports. In South Africa, the Land Rover assembly plant offered a 127 4x4 with seating for 15. Land Rover also offered the 127 as a bare chassis, with just front bodywork and bulkhead, for easy conversion.

Initially held back by the low power of the Land Rover engines (other than the thirsty petrol V8 engine), the 127 benefited from the improvements to the line-up, and by 1990 was only available with the two highest power engines, the 134 hp (100 kW) 3.5-litre V8 petrol, and the 85 hp (63 kW) 2.5-litre turbo diesel .

The original 110 of 1983 was available with the same engine line-up as the Series III vehicles it replaced, namely 2.25-litre (137 cu in) petrol and diesel engines, and a 3.5-litre (210 cu in) V8 petrol unit, although a small number of 3.2-litre (200 cu in) V8s were produced. In 1981 the 2.25 l engines were upgraded from three- to five-crankshaft bearings in preparation for the planned increases in capacity and power. The five bearing version was known as the 2.3 litre to differentiate it despite having the same displacement.

The 2.5-litre version of the diesel engine, displacing 2,495 cubic centimetres (152.3 cu in) and producing 68 hp (51 kW), was introduced in both the 110 and the newly arrived 90. This was a long-stroke version of the venerable 2.25-litre unit, fitted with updated fuel injection equipment and a revised cylinder head for quieter, smoother and more efficient running. A timing belt also replaced the older engines chain. Despite these improvements the engine was underpowered and unrefined in comparison with the competition.

In 1985 the petrol units were upgraded. An enlarged four-cylinder engine was introduced. This 83 hp (62 kW) engine shared the same block and cooling system (as well as other ancillary components) as the diesel unit. Unlike the diesel engine, this new 2.5-litre petrol engine retained the chain-driven camshaft of its 2.25-litre predecessor. At the same time, the 114 hp (85 kW) V8 was also made available in the 90- the first time a production short-wheelbase Land Rover had been given V8 power. The V8 on both models was now mated to an all-new five-speed LT85 manual gearbox.

The year 1986 saw improvements in engines to match the more advanced offerings by Japanese competitors. The "Diesel Turbo" engine was introduced in September, a lightly turbocharged version of the existing 2.5-litre diesel, with several changes to suit the higher power output, including a re-designed crankshaft, teflon-coated pistons and nimonic steel exhaust valves to cope with the higher internal temperatures. Similarly, an eight-bladed cooling fan was fitted, together with an oil cooler. The changes for the turbo diesel were kept as slight as possible, in the aim of making the car saleable in Land Rovers traditional export markets across the globe.

The 2.5 diesel, 2.5 petrol and Diesel Turbo engines all shared the same block castings and other components such as valve-gear and cooling system parts, allowing them to be built on the same production line. The Diesel Turbo produced 85 hp (63 kW), a 13% increase over the naturally aspirated unit, and a 31.5% increase in torque to 150 lb⋅ft (203 N⋅m) at 1800 rpm. Externally, turbo diesel vehicles differed from other models only by having an air intake grille in the left-hand wing to supply cool air to the turbo. Early turbo-diesel engines gained a reputation for poor reliability, with major failures to the bottom-end and cracked pistons. A revised block and improved big end bearings were introduced in 1988, and a re-designed breather system in 1989. These largely solved the engines problems, but it remained (like many early turbo-diesels) prone to failure if maintenance was neglected.

Complete article available at this page.