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ENGINE TUNING DATA 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 Gap ...................................................................................... 0.84-0.96mm Coil Make/type ............................................................................ Bosch 0-221-122-392, (ETC 6574) Compression ratio ............................................................. 9.35:1 Fuel injection system ........................................................ Lucas 14 CUX Hot-wire air flow sensor system electronically controlled Valve Timing Inlet Exhaust Opens .................................................................................. 32° BTDC Closes .................................................................................. 73° ABDC Duration ............................................................................... 285° 285° Valve peak 104° ATDC 114° BTDC Idle speed - controlled by MFI system ............................. 700 ± 25 rev/min Base idle speed .................................................................. See setting procedure - 525 ± 25 rev/min. Ignition Timing - dynamic at idle speed, vacuum disconnected ....................................................... 5° BTDC ± 1 ° Exhaust gas CO content at idle ................................................................ 0% to 0.05% max. 70° BBDC ........................................................................... REISSUED: FEB 1993 1 |