Land Rover V8 3.9 to 4.6

Rover 3.9 / 4.0 / 4.2 / 4.4 / 4.6 Litre V8

Details: Category: Engines; Created on Saturday, 10 September 2011 16:22; Last Updated on Saturday, 22 October 2011 18:47; Published on Saturday, 22 October 2011 17:22; Written by Site Admin; Hits: 1577

The Rover Company began production of their new 'Rover 215' 3.5 litre V8 engine in 1965, which they initially fitted to the Rover P5. The engine was later used in many Rover and Land Rover products, most notably the Rover P6, Rover SD1, Land Rover Series III 109 V8, Range Rover and Discovery 1. The 3.5 litre V8 engine was continuously developed by British Leyland, who passed it to Land Rover for their use. Land Rover went on to develop versions for their own use.

Land Rover 3.9 litre V8

Introduced in the Range Rover in 1989, (the 3.5 litre carb version having been handed down to the new Discovery model) Land Rover produced a 3,946 cc (240.8 cu in) version of the Rover V8 throughout the 1990s. The engine's bore was increased to 94.0 mm (3.70 in) and stroke remained the same as the 3.5 litre version at 71.0 mm (2.80 in). The 3.9 litre V8 filtered down to later Discovery 1 models from 1994, replacing the (by then) Lucas 14CUX fuel injected 3.5 litre V8 engine.

Engine Code: unknown
Layout: 8-cylinder, Vee configuration
Block/Head: Alloy/Alloy
Valves: OHV, chain drive camshaft, push-rod operated
Capacity: 3,946 cc (240.8 cu. in)
Bore x stroke: 94.0 mm x 71.0 mm (3.70 in x 2.80 in)
Compression Ratio: 9.4:1
Fuel Injection: Lucas 14CUX
Power: 182 bhp (134 kW) 4,750 rpm
Torque: 230 lbf·ft (312 N·m) @ 3,100 rpm
Production: 1989-1999
Used in: Range Rover, P38 Range Rover, Discovery 1 (94-99), Land Rover Defender

Land Rover 4.0 V8

The engine was revised in 1995 (and thereafter referred to as a 4.0 to differentiate it from the earlier version, although displacement remained the same at 3,946 cc) with a new intake and exhaust system, extra block ribbing, revised pistons, and larger cross-bolted main-bearings. The 1995 4.0 produced 190 hp (142 kW) at 4.750rpm and 236 lb·ft (320 Nm). Production of the 4.0 ended in 2004 with the introduction of the Discovery 3 (LR3) model. The final version of the engine, used in the 2003 Land Rover Discovery II, produced 188 hp (140 kW) at 4,750 rpm and 250 lb·ft (340 N·m) at 2,600 rpm.

Engine Code: unknown
Layout: 8-cylinder, Vee configuration
Block/Head: Alloy/Alloy
Valves: OHV, chain drive camshaft, push-rod operated
Capacity: 3,946 cc (240.8 cu. in)
Bore x stroke: 94.0 mm x 71.0 mm (3.70 in x 2.80 in)
Compression Ratio: 9.4:1
Fuel Injection: GEMS / Bosch
Power: 190 bhp (142 kW) 4,750 rpm
Torque: 236 lbf·ft (320 N·m) @ 2,600 rpm
Production: 1999-2004
Used in: P38 Range Rover, Discovery II (99-2004), Land Rover Defender (NAS Spec)

Land Rover 4.2 V8

Land Rover extended the 3,946 cc engine just for the Range Rover LSE version of the Classic Range Rover. The 4.2 litre engine had a displacement of 4,275 cc (260.9 cu in), and used the crankshaft castings from the failed Iceberg diesel engine project. Bore remained the same at 94.0 mm (3.70 in), while stroke increased to 77.0 mm (3.03 in).

Engine Code: unknown
Layout: 8-cylinder, Vee configuration
Block/Head: Alloy/Alloy
Valves: OHV, chain drive camshaft, push-rod operated
Capacity: 4,275 cc (260.9 cu. in)
Bore x stroke: 94.0 mm x 77.0 mm (3.70 in x 3.03 in)
Compression Ratio: 9.35:1
Fuel Injection: Lucas 14CUX
Power: 200 bhp (147 kW)@4,850rpm
Torque : 300 lbf·ft (406 N·m) @ 2,600 rpm
Production: 1992-1995
Used in: Range Rover LSE

Leyland Australia 4.4 V8

Although not relevant to Land Rover at all, Leyland of Australia produced a 4,416 cc (269.5 cu in) version of the Rover V8 as an engine option for their Australia-only Leyland P76 car (around 18,000 vehicles produced). The bore was 88.9 mm (3.50 in) and the stroke was 88.9 mm (3.50 in), making it a square engine. The block deck height was extended and longer conrods were fitted 158.75 mm (6.250 in) between centres. This relatively rare engine produced 200 hp (149 kW) and 280 ft lb (380 Nm). A 3.3 litre V6 version of this engine was also being developed to replace the E6 straight six P76 engine option, but the closure by British Leyland of their loss-making Australian operations in 1975 halted the project.

Engine Code: unknown
Layout: 8-cylinder, Vee configuration
Block/Head: Alloy/Alloy
Valves: OHV, chain drive camshaft, push-rod operated
Capacity: 4,416 cc (269.5 cu. in)
Bore x stroke: 88.9 mm x 88.9 mm (3.50 in x 3.50 in)
Compression Ratio: Unknown
Fuel Injection: Stromberg WW Carburettor
Power: 200 bhp (149 kW)@ unknown
Torque: 280 lbf·ft (380 N·m)@ unknown
Production: 1973-1975
Used in: 1973-1975 Leyland P76

Land Rover 4.6 V8

In 1996, Land Rover again enlarged the Rover V8 to 4,552 cc (277.8 cu in). The bore remained the same size as the previous 4.0 litre version at 94.0 mm (3.70 in), but the engine was stroked by 10.9 mm (0.43 in) giving 82 mm (3.2 in) in total. Output was 225 hp (168 kW) @ 4,750rpm and 280 ft•lbf (380 N•m) at 2,600rpm. Production of the 4.6 ended at Land Rover's Solihull factory in 2004, with the introduction of the Land Rover Discovery 3 (LR3).

Engine Code: unknown
Layout: 8-cylinder, Vee configuration
Block/Head: Alloy/Alloy
Valves: OHV, chain drive camshaft, push-rod operated
Capacity: 4,552 cc (277.8 cu. in)
Bore x stroke: 94.0 mm x 82.0 mm (3.70 in x 3.2 in)
Compression Ratio : 9.35:1
Fuel Injection: GEMS / Bosch
Power: 225 bhp (168 kW) 4,750 rpm
Torque: 280 lbf·ft (380 N·m) @ 2,600 rpm
Production: 1995-2004
Used in: (1995-2002) P38 Range Rover HSE, (2003-2004) Land Rover Discovery II