
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.........................................................
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