300Tdi Discovery
04
GENERAL SPECIFICATION DATA
4
INFORMATION
Piston rings
Number of compression rings
2
..........................................
Number of control rings
1
....................................................
No 1 compression ring
Nitrided steel barrel faced
.....................................................
No 2 compression ring
Tapered spherical barrel marked ’TOP’
.....................................................
Width of compression rings
1.478 - 1.49 mm
..............................................
0.0582 - 0.0587 in
(Top)
1.21 - 1.23 mm
................................
0.0476 - 0.0484 in
Compression ring gap
0.40-0.65 mm
......................................................
0.0157 - 0.0256 in
(Top)
0.3 - 0.5 mm
................................
0.0118 - 0.0197 in
Oil control ring type
Aclonoform
..........................................................
Oil control ring width
3.0 mm
.........................................................
0.1181 in
Oil control ring rail gap
0.38-1.40 mm
.....................................................
0.0150 - 0.0551 in
Camshaft
Location
Central
...........................................................................
Bearings
Non serviceable
...........................................................................
Number of bearings
5
..........................................................
Drive
Chain 9.52 mm pitch x 54 pitches.
.................................................................................
Camshaft End Float
0.076 - 0.355 mm
.........................................................
0.003 - 0.014 in
Tappets
Hydraulic self-adjusting
...........................................................................
Valves
Length:
Inlet
116.59 - 117.35 mm
..................................
4.590 - 4.620 in
Exhaust
116.59 - 117.35 mm
...........................
4.590 - 4.620 in
Seat angle:
Inlet
46
°
- 46
°
25’
..................................
Exhaust
46
°
- 46
°
25’
...........................
Head diameter:
Inlet
39.75 - 40.00 mm
..................................
1.565 - 1.575 in
Exhaust
34.227 - 34.48 mm
...........................
1.3475 - 1.3575 in
Stem diameter:
Inlet
8.664 - 8.679 mm
..................................
0.3411 - 0.3417 in
Exhaust
8.651 - 8.666 mm
...........................
0.3406 - 0.3412 in
Stem to guide clearance:
Inlet
0.025 - 0.066 mm
..................................
0.0010 - 0.0026 in
Exhaust
0.038 - 0.078 mm
...........................
0.0015 - 0.0031 in
Valve lift (Inlet and Exhaust)
9.94 mm
............................................
0.3913 in
Valve spring length fitted
40.4 mm (1.59 in) at pressure of 29.5 kg (65 lb)
..................................................
Lubrication
System type
Wet sump, pressure fed
.....................................................................
Oil pump type
Rotor
...................................................................
Oil pressure
2.11 to 2.81 kg/cm
2
(30 to 40 psi) at 2400 rev/min with
......................................................................
engine warm
Oil filter-internal
Wire screen, pump intake filter in sump
................................................................
Oil filter-external
Full flow, self-contained cartridge
...............................................................
