Section Contents:- The first series of D22's had larger 3.2 litre Turbo Diesel engines.(More...)
- The 2.5 litre Diesel engines are Turbo charged with intercooler, and the 3.0 litre is Turbo-charged but is not intercooled.(More...)
The first series of D22's had larger 3.2 litre Turbo Diesel engines. The second series has 3 available engine types.
[1] The introduction of the XUD9 intercooled turbo diesel by PSA in the Citroen ZX and Peugeot 405 took diesel performance and refinement to another level. The ZX Volcane intercooled turbo diesel is reckoned by many to be the first true diesel 'hot hatch'. (From such roots eventually grew the 306 DTurbo as a specific'sporty model'.)
[2] Manual gearboxes were available across the range and a CVT option was available on the 1.6i 16v unit. The 1.8-litre models earned a certain amount of praise for their performance, whilst the intercooled turbo diesel was actually one of the fastest-accelerating diesel hatchbacks on the market in the late 1990s.
[3] Powertrain options included the Isuzu 2.9 L turbo diesel, a medium-RPM, slightly modified engine that was also used for portable freezer boxes, generators and lifeboats.
[4] Engine offerings continued over from the first-generation ram and were the 3.9L V6, 5.2l V8, 5.9L V8 and Cummins Turbo diesel. Added to the line up was a new 488 cubic inch 8.0L V10 engine designed as an alternative to those who wanted superior pulling power but didn't want a diesel.
[5] The Cummins Turbo Diesel was also added to the engine lineup and for the first time, Dodge saw sales go up as drivers found out just how durable the Cummins engine truly was.
[5] The new V10 and Cummins Turbo diesel could only be had in the 2500 and up trucks. Models were now the 1500 half-ton, 2500 three quarter-ton, and 3500 dual rear wheel one-ton in both 2 and 4 wheel drive in 6 and 8-foot (2 m) boxes. Dodge offered the 2500 series in two different gross-vehicle weight ratings for the first few years but this was dropped in the late 90's.
[5] In mid year 1998, the redesigned Cummins Turbo Diesel was released, a 24 valve version, now electronically controlled producing more power and torque.
[5] 
The 2.5 litre Diesel engines are Turbo charged with intercooler, and the 3.0 litre is Turbo-charged but is not intercooled. [1] In 2007 the 635d (Twin Turbo 3.0L Diesel) was introduced with 290 bhp and 430 lb ft which comprehensively outguns the 630i with the added bonus of 41mpg, the 635d Convertible (released shortly afterwards) was described by Autocar as "the best 6-series of the lot."
[6] The concept of a simple, low-stress, low-power engine had worked for decades, but the venerable engines were feeling old and underpowered. The "Diesel Turbo" engine was introduced to make up for this long-standing shortfall.
[7] At the same time that the Diesel Turbo was introduced, the V8 engine was upgraded.
[7] An 8-blade cooling fan was fitted, together with an oil cooler. The 2.5 diesel, 2.5 petrol and Diesel Turbo engines all shared the same block castings and other components such as valvegear and cooling system parts, allowing them to be built on the same production line.
[7] The Diesel Turbo produced 85 hp (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). This finally provided a powerful yet economical powerplant for the vehicle.
[7] Early engines gained a reputation for poor reliability, with major failures to the bottom-end and cracked pistons. Detail changes made in 1989 solved many of these problems, but the engine had gained a poor reputation and was superseded by the 200Tdi a year later. The Diesel Turbo was a popular engine choice in its time, especially since it offered improved power, torque and economy over the 2.5-litre petrol engine.
[7] Initially held back by the low power of the Land Rover engines (other than the thirsty V8 petrol 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 horsepower (100 kW) 3.5-litre V8 petrol, and the 85 horsepower (63 kW) 2.5-litre Diesel Turbo.
[7] In theory it only replaced the older Diesel Turbo engine in the range, with the other 4-cylinder engines (and the V8 petrol engine) still being available.
[7] Whilst not being able to match the performance of a V8-engined Land Rover, the Diesel Turbo provided adequate performance for most commercial and private buyers and was a key aspect in Land Rover's sales revival (see below).
[7] 
