Discovery 2. Manual — part 382
GENERAL DATA
04-1
GENERAL DATA
Engine - Td5
General
Type
2.5 litre in-line direct injection diesel, turbocharged and intercooled
Cylinder arrangement
5 in-line, No. 1 cylinder at front of engine
Bore
84.450 mm (3.3248 in)
Stroke
88.950 mm (3.5020 in)
Capacity
2498 cm
3
(152.5 in
3
)
Firing order
1 - 2 - 4 - 5 - 3
Compression ratio
19.5 : 1
Direction of rotation
Clockwise viewed from the front of the engine
Dimensions:
Þ
Length
766 mm (30.1 in)
Þ
Width
708 mm (27.8 in)
Þ
Height
788 mm (31.0 in)
Injection timing
Controlled by ECM
Injectors:
Þ
Make/Type
Lucas EV1
Þ
Nominal operating pressure:
Þ
Pre EU3 models
1500 bar (21750 lbf.in
2
)
Þ
EU3 models
1750 bar (25500 lbf.in
2
)
Maximum governed speed
4850 rev/min
Maximum overrun speed
5460 rev/min
Idle speed:
Þ
Manual gearbox
740
±
50 rev/min
Þ
Automatic gearbox
760
±
50 rev/min
Glow plugs
Beru 12 V. Four plugs in cylinders 1, 2, 3 and 4
Turbocharger
Garrett GT 20
Emissions standard:
Þ
Pre EU3 models
ECD 2
Þ
EU3 models
ECD 3
Valve timing
Inlet valves:
Þ
Opens
14
°
BTDC
Þ
Closes
33
°
ABDC
Exhaust valves:
Þ
Opens
57
°
BBDC
Þ
Closes
14
°
ATDC
GENERAL DATA
04-2
Lubrication
Type
Wet sump, pressure fed
Pump type
Eccentric rotor, crankshaft driven integral with stiffener plate.
Filter type:
Þ
Primary
Centrifuge filter
Þ
Secondary
Disposable canister with full flow by-pass
Pressure at idle (Cold)
3.0 bar (43.5 lbf.in
2
)
Pressure at 3500 rev/min (Hot)
1.5-3.0 bar (21.75-43.5 lbf.in
2
)
Relief valve opening pressure
4.0 bar (58 lbf.in
2
)
Low oil pressure switch opening pressure
0.2-0.6 bar (3.0-8.8 lbf.in
2
)
Crankshaft
Main journal diameter
61.9875-62.0125 mm (2.4404-2.4414 in)
Crankpin journal diameter
53.99-54.01 mm (2.125-2.131 in)
End float
0.020 - 0.250 mm (0.0008 - 0.0098 in)
Main bearings
Quantity
6 (5 main, 1 thrust)
Pistons
Type
Graphite compound skirt with combustion chamber in crown
Clearance in cylinder bore.
Measured at bottom of skirt, 90
°
to gudgeon pin
0.172-0.206 mm (0.007-0.008 in)
Diameter
(Measured at right angles to gudgeon pin and 40.0
mm (1.5 in) from bottom of skirt)
84.270-85.254 mm (3.321-3.361 in)
Gudgeon pins
Fully floating, offset towards piston thrust side
Piston rings
Type:
2 compression, 1 oil control
Þ
Upper compression ring
Barrel edge, chrome plated
Þ
Lower compression ring
Taper faced
Þ
Oil control ring
Bevelled ring with spring
New ring to groove clearance:
Þ
Upper compression
Not measured
Þ
Lower compression
0.050-0.082 mm (0.002-0.003 in)
Þ
Oil control
0.050-0.082 mm (0.002-0.003 in)
Piston ring fitted gap in cylinder bore:
Þ
Upper compression
0.30-0.45 mm (0.0118-0.0177 in)
Þ
Lower compression
0.40-0.60 mm (0.0157-0.0236 in)
Þ
Oil control
0.25-0.40 mm (0.0098-0.0157 in)
GENERAL DATA
04-3
Camshaft
Bearings
6
Drive
Duplex chain
End float
0.06-0.16 mm (0.002-0.006 in)
Tappets
Type
Hydraulic lash adjusters with followers
Valves
Stem diameter:
Þ
Exhaust
6.905
±
0.008 mm (0.271
±
0.0003 in)
Þ
Inlet
6.915
±
0.008 mm (0.272
±
0.0003 in)
Head diameter:
Þ
Exhaust
31.7 mm (1.25 in)
Þ
Inlet
34.7 mm (1.37 in)
Seat face angle:
Þ
Exhaust
45
°
Þ
Inlet
30
°
Valve face angle:
Þ
Exhaust
44
°
48'
±
12'
Þ
Inlet
29
°
48'
±
12'
Valve springs
Type
Parallel, single coil
GENERAL DATA
04-4
Engine - V8
General
Cylinder arrangement
90
°
V8, numbered from the front of the engine:
Þ
Left bank cylinders 1, 3, 5 and 7
Þ
Right bank cylinders 2, 4, 6 and 8
Bore
94.00 mm (3.70 in)
Stroke:
Þ
4.0 litre
Þ
4.6 litre
71.04 mm (2.80 in)
81.92 mm (3.22 in)
Capacity:
Þ
4.0 litre
Þ
4.6 litre
3950 cm
3
(241 in
3
)
4554 cm
3
(278 in
3
)
Firing order
1 - 8 - 4 - 3 - 6 - 5 - 7 - 2
Compression ratio:
Þ
Low - 4.0 litre
8.23:1
Þ
High - 4.0 and 4.6 litre
9.35:1
Direction of rotation
Clockwise viewed from the front of the engine
Maximum power - 4.0 litre:
Þ
Low compression ratio
132 kW (177 bhp) at 4750 rev/min
Þ
High compression ratio - UK/Japan/ROW
136 kW (182 bhp) at 4750 rev/min
Þ
High compression ratio - NAS
140 kW (187 bhp) at 4750 rev/min
Maximum power - 4.6 litre
162 kW (217 bhp) at 4750 rev/min
Maximum engine speed:
Þ
Continuous
5000 rev/min
Þ
Intermittent
5250 rev/min
Weight (fully dressed, wet)
Þ
Manual
194 Kg (435 lb)
Þ
Automatic
179 Kg (402 lb)
Dimensions:
Þ
Length - Manual
767 mm (30.2 in) (Including fan)
Þ
Length - Automatic
777 mm (30.5 in) (Including fan and drive plate)
Þ
Width
652 mm (25.7 in)
Þ
Height
746 mm (29.4 in)
Spark plugs:
Þ
Make/Type - 4.0 litre
Champion RC11 PYP B4
Þ
Make/type - 4.6 litre
Champion RN11 YCC
Þ
Gap - 4.0 and 4.6 litre
1.00
±
0.05 mm (0.040
±
0.002 in) Non-adjustable
Coils:
Þ
Make
Bosch 0221 503 407
Þ
Type
Twin coils
Fuel injection system:
Þ
Make
Bosch Motronic 5.2.1 Type 4146
Þ
Type
Multiport fuel injection, electronically controlled with electro-
mechanical injectors
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