Rover L-Series engine

Rover L-Series engine

The L-Series engine is an automotive diesel engine built by Powertrain Ltd, a sister company of MG Rover.


The L-Series engine commenced production in January 1995 and was the first in-house designed and manufactured "direct injection" diesel for use in Rover Cars applications and derived from the established Perkins MDi Prima engine used in the Austin Montego, Austin Maestro, and LDV Sherpa van. The L series is extremely versatile and has been fitted in the Land Rover Freelander, Rover 200 Mk3, Rover 400 Mk2, Rover 600, and European versions of the Honda Accord and Honda Civic. A development of the L series engine (The G-Series) featuring a modern common-rail fuel injection system was underway when MG-Rover ceased production, but the company's closure prevented it from being fully developed and released.


There are several forms of this engine.

The first is a non intercooled, mechanically controlled fuel injection system. This version is available in Rover 200 and Rover 400 models and the model designation ends in "D", i.e. SD, SLD etc., etc.

The second is intercooled and has an electronically controlled fuel injection system. This version is available in Rover 200, Rover 400 and Rover 600 models. The model designation ends in "Di", i.e. SDi, SLDi etc., etc.

The last and most recent engine is intercooled and also has an electronically controlled injection system which is slightly more advanced and produces more torque but the same power output as earlier intercooled models. This is the version that is used in the Rover 25, Rover 45, MG ZR, and MG ZS.

All versions use Bosch fuel injection equipment of various designs.

The engine is extremely environmentally friendly in terms of its emissions. It is quiet in operation owing to its two stage fuel injection & ECU controlling fuel for most models and timing for them all. The engine currently satisfies ECD IIl derogated Diesel emissions legislation when installed with an appropriate specified oxidation catalyst.

around the engine consistently give feedback to the ECU regarding injection timing, engine speed, load, fuel and coolant temperature, boost pressure etc to ensure that optimum running conditions are maintained.

The basic engine is a conventional 4 cylinder with 2 valves per cylinder operated by a single overhead camshaft and hydraulic tappets.

The block is made of cast iron with aluminum alloy head and sump. An Allied Signal GT15 turbo charger supplies boosted air. A fully modulated, either air or water cooled exhaust gas recirculation (EGR) system is incorporated into the intake/exhaust system.

All accessories (PAS, aircon, water pump, vacuum pump, alternator) are all driven off a single poly-vee-belt drive with autotensioner. Camshaft and injection pump drives are via two multi-toothed belts with either automatic or manual tensioners.

Related Development

The Land Rover Td5 engine, a 2.5-litre, 5-cylinder turbodiesel used in the Discovery and the Defender had the same bore/stroke dimensions as the L-Series and used the same pistons, connecting rods and crankshaft dimensions. However, the Td5 was not simply a 5-cylinder L-Series. It used Lucas Electronic Unit Injection, instead of the L-Series' direct injection system, as well as a through-flow cylinder head and a very different ancillary equipment layout. The Td5 had been developed by the Rover Group under the codename 'Project Storm', which was originally to develop a replacement range of turbodiesels to replace the L-Series, with 4-, 5- and 6-cylinder engines of 2-, 2.5- and 3-litres respectively. When the Rover Group was taken over by BMW, they brought their own range of diesels which rendered the 2-litre and 3-litre Storm engines unnecessary. Only the Td5 entered production.


The L-series engine has been availbable in 3 specifications.

Auto bhp|84|0 Turbo/Non-intercooled (ceased production in 2000)
Auto bhp|104|0 Turbo/intercooled
Auto bhp|111|0 Turbo/intercooled

Bore - 84.5 mm (3.33")
Stroke - 88.9 mm (3.5")
Displacment - 1994 cc
Firing order - 1-3-4-2
Compression ratio - 19.5:1
Boost pressure - 14 psi
Fuel pressure - 20,500 psi maxv

Wikimedia Foundation. 2010.

Look at other dictionaries:

  • Rover T-Series engine — The Rover T16 engine was a 1994 cc petrol engine, produced by Rover from 1992 to 1999. It has a bore of convert|84.45|mm|in|abbr=on and a stroke of convert|89|mm|in|abbr=on. It is a development of the M Series (M16), which was in turn a… …   Wikipedia

  • Rover M-Series engine — The Rover M Series (or M16) is a 4 cylinder, DOHC internal combustion engine introduced by the Austin Rover Group in 1986 for the then new Rover 800 series.The M Series was produced only in one cubic capacity 1994 cc (2.0 L), and was a 16 valve… …   Wikipedia

  • Rover 200 Series — Infobox Automobile name=Rover 200 series/25 manufacturer=Rover Group production=1984 ndash;2005 Over 1,482,000 made. predecessor=Triumph Acclaim successor=MG 3 layout=FF layout class= compact car (1984 1999) supermini (2000 2005) body style=… …   Wikipedia

  • Rover 400 Series — Infobox Automobile generation name = Rover 400 First generation production = 1990 1995 related = Rover 200 Honda Concerto body style = 4 door saloon 5 door estate engine = 1.4 L K Series I4 1.6 L I4 2.0 L M Series I4 1.8 L Turbo Diesel 1.9 L NA… …   Wikipedia

  • Rover 600 Series — Infobox Automobile name = Rover 600 manufacturer = Rover Group production = 1993 1999 predecessor = Austin Montego successor = Rover 75 layout = FF layout Top speed = 122mph 143mph Power = 115 156hp the 600ti had 197hp class = Compact executive… …   Wikipedia

  • BL O-Series engine — from a Morris Ital The BL O Series engine was a straight 4 automobile engine family produced by British Leyland (BL) as a development of the BMC B series engine family. (See also another B series successor, the BMC E series engine.) Introduced by …   Wikipedia

  • BL S-Series engine — The S Series is a Straight 4 SOHC internal combustion engine developed by the Austin Rover Group (subsidiary of British Leyland), and introduced in 1984 in both the Austin Montego and the Mark 1 Rover 200 series. It was also used in the Austin… …   Wikipedia

  • BMC E-Series engine — The BMC E Series was a straight 4 and straight 6 overhead camshaft automobile engine. It displaced 1.5 litres or 1.8 litres in 4 cylinder and 2.2 litres and 2.6 litres as a 6 cylinder. The UK market did not use the 2.6 litre version, vehicles… …   Wikipedia

  • BMC B-Series engine — Infobox Automobile engine name = B Series manufacturer = BMC type = in line 4 production = 1954–80 predecessor = successor = bore = stroke = displacement = 1.2 – 2.4 litres length = width = height = weight = block = cast iron head = cast iron… …   Wikipedia

  • BMC A-Series engine — Austin Motor Company s small straight 4 automobile engine, the A Series, is one of the most common in the world. Launched in 1951 with the Austin A30, production lasted until 2000 in the Mini.The A Series design was licensed by Nissan of Japan,… …   Wikipedia