Engine tuning dataEngine 4.0 V8
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 |
Coils
| Make | Lucas 2D1S2 |
| Type | Double ended coil, bank of 4 |
| Compression ratio | 9.35:1 - High Compression |
Fuel injection system
| Make | Sagem - Lucas |
| Type | GEMS Sequential Multipoint Fuel injection (SFi) Hot-wire air flow sensor system electronically controlled |
Valve Timing Inlet
| Opens | 28°BTDC |
| Closes | 77°ABDC |
| Duration | 285° |
| Valve peak | 108°ATDC |
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 | Less than 0.5% |
Gasoline
| 9.35:1 - USA vehicles | PREMIUM UNLEADED GASOLINE (PUG) with a CLC or AKI octane rating of 90 or 92. |
0.035 - 0.040 in
Exhaust
66°BBDC 39°ATDC 285° 110°BTDC
03 Engine
