Range Rover Classic
ENGINE TUNING DATA
1
INFORMATION
ENGINE - 3.9 V8
Type
3.9 Litre V8
.................................................................................
Firing order
1-8-4-3-6-5-7-2
.....................................................................
Cylinder Numbers
Left bank
1-3-5-7
..........................................................................
Right bank
2-4-6-8
........................................................................
No 1 Cylinder location
Pulley end of left bank
...................................................
Timing marks
On crankshaft vibration damper
..................................................................
Spark plugs
Make/type(8.13:1 Compression)
Champion RN11YCC
......................................
Gap
0.84-0.96mm (0.033-0.038 in)
..................................................................................
Make/type(9.35:1 Compression)
Champion RN11YCC
......................................
Gap
0.84-0.96mm (0.033-0.038 in)
..................................................................................
Coil
Make/type
Bosch 0-221-122-392, (ETC 6574)
........................................................................
Compression ratio
8.13:1 or 9.35:1
.........................................................
Fuel injection system
Lucas 14 CUX Hot-wire air flow sensor
.....................................................
system electronically controlled
Valve Timing
Inlet
Exhaust
Opens
32
°
BTDC
..............................................................................
70
°
BBDC
Closes
73
°
ABDC
..............................................................................
35
°
ATDC
Duration
285
°
...........................................................................
285
°
Valve peak
104
°
ATDC
.......................................................................
114
°
BTDC
Idle speed - controlled by EFi system
- all loads off in neutral
665 to 735 rev/min
............................................
- auto gearbox in gear, air con operating
650
±
28 rev/min
................
- auto gearbox in gear, air con off
600
±
28 rev/min
...........................
- manual gearbox
700
±
28 rev/min
....................................................
- manual gearbox, air con operating
750
±
28 rev/min
.......................
Base idle speed
525
±
25 rev/min -.
..............................................................
See FUEL SYSTEM, Fault diagnosis, Base Idle
Speed Setting
Ignition Timing - dynamic at 800 rev/min max, vacuum disconnected
8.13:1 compression, non catalyst
2
°
BTDC
±
1
°
.....................................
9.35:1 compression, non catalyst
4
°
BTDC
±
1
°
.....................................
9.35:1 compression, catalyst
5
°
BTDC
±
1
°
............................................
Exhaust gas
CO content at idle
0.5 to 1.0% max.
............................................................
