Range Rover P38
GENERAL SPECIFICATION DATA
5
INFORMATION
Piston rings
Number of compression rings
2
..........................................
Number of oil control rings
1
...............................................
No 1 compression ring
Nitrided steel barrel faced
.....................................................
No 2 compression ring
Tapered spherical barrel marked ’TOP’
.....................................................
Width of compression rings
Bottom
1.478 - 1.49 mm
.....................................................................
0.0582 - 0.0587 in
Top
Up to 99MY
1.21 - 1.23 mm
....................................................
0.0476 - 0.0484 in
From 99MY
1.17 - 1.19 mm
.....................................................
0.0461 - 0.0479 in
Compression ring gap
Bottom
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
Up to 99MY
Aclonoform
.............................................................
From 99MY
3 Piece Aeconoform
.............................................................
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
Up to 99MY
0.076 - 0.355 mm
.............................................................
0.003 - 0.014 in
From 99MY
0.075 - 0.350 mm
.............................................................
0.002 - 0.013 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
Up to 99MY
From 99MY
Inlet
46
°
- 46
°
25’
.........................................................................
45
°
- 45
°
30’
Exhaust
46
°
- 46
°
25’
...................................................................
45
°
- 45
°
30’
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
Up to 99MY
40.40 mm (1.59 in) at pressure of 29.5 kg (65 lb)
.............................................................
From 99MY
40.93 mm (1.61 in) at pressure of 29.5 kg (65 lb)
.............................................................