300Tdi Discovery
ENGINE TUNING DATA
3
INFORMATION
ENGINE 4.0 V8
Type
4.0 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
...................................................
Spark plugs
Make/type
Champion RN11YCC
........................................................................
Gap
0.90 - 1.00 mm
..................................................................................
0.035 - 0.040 in
Coils
Make
Lucas 2D1S2
................................................................................
Type
Twin coils, bank of 4
.................................................................................
High Compression
Low Compression
Compression ratio
9.35:1
............................................................
8.2:1
Fuel injection system
Sagem - Lucas GEMS8 Hot-wire air flow sensor
.....................................................
system electronically controlled
Valve Timing
Inlet
Exhaust
Opens
28
°
BTDC
..............................................................................
66
°
BBDC
Closes
77
°
ABDC
..............................................................................
39
°
ATDC
Duration
285
°
...........................................................................
285
°
Valve peak
108
°
ATDC
.......................................................................
110
°
BTDC
Idle speed - controlled by GEMS system
all loads off
700
±
20 rev/min
..............................................................
Base idle speed
Not adjustable
..............................................................
Idle air control valve position, checked via TestBook
CO at idle
vehicles without heated oxygen sensors
1.5% æ 0.5%
.................
Fuel
9.35:1 catalyst
95 RON minimum unleaded
.................................................................
USA vehicles - Premium unleaded (PUG)
95 RON minimum
.......................
8.2:1
catalyst
91 RON minimum unleaded
.................................................................
Non catalyst
91 RON minimum unleaded or leaded
.........................................................
