The 300Tdi Engine
Years produced: 1994 2006
Power: 111 bhp (83 kW)
Torque: 195 lb/ft (264 N/m)
Fuel: Diesel
Capacity: 2.5 Litres
Cylinders: 4
Serial code prefix: 1.16L (non EGR), 23L (EGR), 24L (EGR Auto) Defender
2.17L/18L (EDC Manual), 19L/20L (EDC Auto), 21L (EGR Manual), 22L (EGR Auto) Discovery/Range Rover Classic
The Land Rover 300Tdi engine was an evolution upon the earlier 200Tdi with many improvements and refinements for better on road performance. However, it has the same capacity and power as its predecessor and slightly worse fuel consumption, which has lead some people to downgrade to the 200Tdi given the option. The early 300Tdis had premature timing belt failures resulting in catastrophic engine damage. Land Rover issued a repair kit which could easily rectify issues with guide pulley misalignment.
Land Rover continued to make the 300Tdi alongside for the export market as Rest of the World spec, where EU regulations were not applicable, and for the British Army who deemed the Electronic control unable to guarantee protection against Electromagnetic Pulse (EMP) weapons.
Since the 300Tdi engine is longer than the 200Tdi, the engine was moved further forward in the bay, requiring different engine mounts.
EGR and EDC
Some Tdis (engine serial prefix 23L) have Exhaust Recirculation Regulators (EGRs) or Electronic Diesel Control (EDC) which limit the mechanical only nature of these pre-Td5 engines. Which engines have these features seems to be unrelated to their year built, but you can tell from the VIN number. The character after the body type shows the type of engine, e.g. SALLDHMF 110 SW 200Tdi/300Tdi without EDC/Cat or SALLDHA6 110 Hardtop 200Tdi/300Tdi with EDC/Cat. The last character, F or 6 refers to the type of engine in the Land Rover.
The EGR recirculates Nitrous oxides into the engine inlet to be reburnt, which lowers the intake air temperature and improves efficiency, and also burns more of the oxides resulting in cleaner exhaust emissions. However, over time they can become clogged with exhaust soot and impair performance, so it is recommended to remove it.
The EDC is different fuel injection pump which connects to the accelerator through an electronic signal as opposed to the standard steel cable. It is more common on the Discovery 300Tdi.
Converting to the 300Tdi Engine
From 2.5NA with LT77: Replace the 300Tdi engine back plate with the one from the 2.5 NA and use the LT77 Bell Housing. Read more
Converting from the 300Tdi Engine
To 200Tdi
To 2.8TGV: This is an engine from Powerstroke, which improves upon the 300Tdi
Compatible Gearboxes
Has the R380 as standard but also fits the LT77 by changing the engine back plate to a 2.5NA model and using the LT77 Bell housing, or by removing a single stud from the engine and using the LT77 Bell housing.
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