Range Rover Classic
ENGINE TUNING DATA
3
INFORMATION
ENGINE - 4.2 V8
Type
4.2 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
Champion RN11YCC
........................................................................
Gap
0.84-0.96mm (0.033-0.038 in)
..................................................................................
Coil
Make/type
Bosch 0-221-122-392, (ETC 6574)
........................................................................
Compression ratio
8.94:1
.........................................................
Fuel injection system
Lucas 14 CUX Hot-wire air flow sensor system
.....................................................
electronically controlled
Valve Timing
Inlet
Exhaust
Opens
28
°
BTDC
.....................................................................
72
°
BBDC
Closes
64
°
ABDC
.....................................................................
20
°
ATDC
Duration
272
°
..................................................................
272
°
Valve peak
108
°
ATDC
..............................................................
116
°
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, vacuum disconnected
8
°
BTDC
±
1
°
at 800 rev/min max
.............................
Exhaust gas
CO content at idle
0.5 to 1.0% max.
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