Land Rover Discovery. Manual - part 10

GENERAL SPECIFICATION DATA

21

INFORMATION

TRANSMISSION - 300 Tdi

Manual gearbox

Type R380

Single helical constant mesh

.......................................................................

Speeds

5 forward 1 reverse all synchromesh

.............................................................................

Automatic gearbox

Type ZF4HP

Four speed and reverse with fluid torque converter

.....................................................................

Transfer box

Type LT230T

Two speed reduction on main gearbox output. Front

....................................................................

and rear drive permanently engaged via a lockable
differential

04

GENERAL SPECIFICATION DATA

22

INFORMATION

ENGINE - Mpi - 2.0 LITRE

Type

20 T4 - 16 valve twin overhead camshaft

.................................................................................

Cylinder arrangement

4 in line

.......................................................

Bore

84.45 mm

.................................................................................

3.325 in

Stroke

89.00 mm

...............................................................................

3.504 in

Capacity

1994 cm

3

...........................................................................

121.68 in

3

Firing order

1-3-4-2

.......................................................................

Compression ratio

10 : 1

............................................................

Oil pump
Outer rotor to body clearance

0.05 to 0.10 mm

..........................................

Inner rotor tip clearance

0.025 to 0.12 mm

...................................................

Outer rotor end float

0.03 to 0.08 mm

.........................................................

Oil pressure relief valve
Spring free length

42.0 mm

.............................................................

Cooling system
Starts to open

82 to 86

°

C

...................................................................

Thermostat fully open

88

°

C

.......................................................

Open travel A

9 mm

...................................................................

Camshaft
Camshaft end-float

0.06 to 0.25 mm

...........................................................

Bearing clearance

0.060 to 0.094 mm

............................................................

Service limit

0.15 mm

.............................................................

Timing belt tensioner
Spring free length

57.5 to 58.5 mm

.............................................................

Cylinder head

Longitudinal warp - maximum

0.1 mm

.................................

Transverse warp - maximum

0.1 mm

...................................

Diagonal warp - maximum

0.1 mm

......................................

Cylinder head height

135.0 to 135.1 mm

...............................................

Valve springs
Free length

46.25 mm

.......................................................................

Fitted length

37.0 mm

.....................................................................

Load at fitted length

255

±

12 N

..........................................................

Load at valve open length

560

±

22.5 N

................................................

GENERAL SPECIFICATION DATA

23

INFORMATION

Valves
Valve stem diameter:

Inlet

7.09 to 7.10 mm

.........................................................................

Exhaust

7.07 to 7.09 mm

...................................................................

Valve head diameter:

Inlet

31.7 to 31.95 mm

.........................................................................

Exhaust

29.2 to 29.43 mm

...................................................................

Valve installed height - maximum

43.4 mm

....................................

Valve stem to guide clearance:

Inlet

0.04 to 0.06 mm

.........................................................................

Service limit

0.09 mm

.............................................................

Exhaust

0.06 to 0.07 mm

...................................................................

Service limit

0.10 mm

.............................................................

Valve guides
Internal diameter - Inlet and Exhaust

7.137 to 7.162 mm

...............................

Overall length:

Inlet

48.5 mm

.........................................................................

Exhaust

52.9 mm

...................................................................

Valve seats
Valve seat angle - Inlet and Exhaust

45

°

................................

Valve seat width - Inlet and Exhaust

1.5 to 2.0 mm

................................

Valve face angle:
Inlet and Exhaust

45

°

to 45

°

15’

.............................................................

Crankshaft
End-float

0.03 to 0.2 mm

...........................................................................

Thrust washer halves thickness

2.31 to 2.36 mm

.......................................

Main journal diameter

54.005 to 54.026 mm

.......................................................

Maximum out of round

0.010 mm

............................................

Main bearing diametric clearance

0.03 to 0.07 mm

....................................

Big-end journal diameter

47.648 to 47.661 mm

..................................................

Maximum out of round

0.010 mm

............................................

Big-end bearing diametric clearance

0.04 to 0.08 mm

................................

Piston rings
New ring to groove clearance:
Top compression

0.06 to 0.09 mm

.............................................................

2nd compression

0.05 to 0.07 mm

..............................................................

Oil control rails - expander fitted

0.03 to 0.05 mm

......................................

Ring fitted gap:
Top compression

0.25 to 0.35 mm

.............................................................

2nd compression

0.3 to 0.5 mm

..............................................................

Oil control rails

0.38 to 1.14 mm

.................................................................

Pistons
Piston diameter:

Grade A

84.409 to 84.422 mm

...................................................................

Grade B

84.423 to 84.436 mm

...................................................................

Clearance in bore

0.01 to 0.03 mm

.............................................................

Cylinder bore

Grade A

84.442 to 84.455 mm

...................................................................

Grade B

84.456 to 84.469 mm

...................................................................

04

GENERAL SPECIFICATION DATA

24

INFORMATION

FUEL SYSTEM - Mpi

Electronic fuel injection data

See ENGINE TUNING DATA, Information, Engine

............................................

- Mpi - 2.0 Litre

Fuel Pump:
Make/Type

A.C. Rochester/Electric immersible

.......................................................................

Pump pressure

3.2 bar

.................................................................

Delivery at 3 bar pressure & 12V (min)

64 litre/h

............................

Regulated pressure range

3.0 æ 0.2 bar

................................................

Fuel pump delivery pressure

2.3 - 2.5 kgf/cm

2

............................................

Fuel filter

Bosch in-line filter ’canister’ type

..........................................................................

COOLING SYSTEM - Mpi

Pressure cap

15lbf/in

2

(1.03 bar) (system pressure)

....................................................................

Thermostat

88 ˚C

.......................................................................

CLUTCH - Mpi

Type

Diaphragm spring, hydraulically operated

.................................................................................

Adjustment

Self adjusting

.......................................................................

Clutch plate diameter

215.13 mm

.......................................................

TRANSMISSION - Mpi

Manual gearbox

Type R380

Single helical constant mesh

.......................................................................

Speeds

5 forward 1 reverse all synchromesh

.............................................................................

Transfer box

Type LT230T

Two speed reduction on main gearbox output. Front

....................................................................

and rear drive permanently engaged via a lockable
differential

Overall ratios (final drive):

In high transfer

In low transfer

Fifth

4.146:1

..................................................................................

9.761:1

Fourth

4.989:1

...............................................................................

11.746:1

Third

7.518:1

.................................................................................

17.701:1

Second

11.479:1

.............................................................................

27.109:1

First

17.884:1

..................................................................................

42.109:1

Reverse

18.463:1

............................................................................

43.472:1