Holden - Commodore, VN 3.8 Litre V6 (1988-1991)
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Engine size/No of cyl - cc
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3791/V6
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Description
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OHV-12V MPI
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Engine code
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VH
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Power - kw @ rpm
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125 @ 4800
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Torque - Nm @ rpm
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292 @ 3200
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Bore and stroke - mm
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96.52 x 86.36
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Firing order
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1-6-5-4-3-2
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Compression ratio :1
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8.5
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Compression pressure - kPa
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689 (minimum)
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Valve clearances - Inlet
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Hydraulic lifters
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Valve clearances - Exhaust
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Hydraulic lifters
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Oil pressure - kPa @ rpm
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275 @ 1850; 1991 models 375 @ 1850
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Radiator cap pressure - kPa
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135
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Thermostat opening temp - °C
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89-93
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Oil filter type - Ryco No
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Z154
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Spark plug type
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AC R44LTS6, Champion RS12YC6
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Spark plug gap - mm
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1.5
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Points gap/dwell - mm/°
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Not applicable
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Ignition timing - °BTDC
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10
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Ignition timing - Timing Conditions
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Bridge terminals 4 & 6
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Ignition timing - Connector Location
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Above LH kick panel
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Coil resistance - Primary - ohms
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0.3-1.5
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Coil resistance - Secondary - k/ohms
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10-14; 5-7 (1991 models)
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Idle Speed - Auto trans
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700±100
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Idle Speed - Manual trans
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700±100
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Idle Speed - Base conditions
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Not applicable
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Idle Speed - Connector location
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Not applicable
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Fuel pressure (regulated) - kPa
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240-260
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Fuel filter type - Ryco No
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Z168 (1988); Z200 (1989-91)
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Air filter type - Ryco No
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A360
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Disc thickness (min) - Front (mm)
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21
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or drum diameter (max) - Rear (mm)
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9.5
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Spark plug - Nm
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30
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Cylinder head (1st step, 2nd step, etc) - Nm
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34, +90°, 81Nm
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Conrod bearings - Nm
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30 + 50°
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Main bearings - Nm
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127; 1991 models 39 + 48°
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Flywheel/driveplate - Nm
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90: 1991 models 22 + 75°
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Crankshaft pulley - Nm
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325
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Camshaft pulley - Nm
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40; 1991 models 200
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Camshaft cap - Nm
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Not applicable
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Engine Oil - Oil type
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20W-40 SF
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Engine Oil - Castrol
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FMX 15W-40 / GTX2
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Engine Oil - Capacity incl filter (litres)
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4.1
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Auto Transmission Oil - Oil type
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Dexron II
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Auto Transmission Oil - Castrol
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TQ Dexron III
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Auto Transmission Oil - Capacity - service (litres)
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4.8
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Manual Transmission Oil - Oil type
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75W-90
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Manual Transmission Oil - Castrol
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VMX 80, Multi-Trax
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Manual Transmission Oil - Capacity (litres)
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2
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Differential Oil - Oil type
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SAE 90 LS GL5
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Differential Oil - Castrol
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LSX 90, SAF-XA
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Differential Oil - Capacity (litres)
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1.7
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Transfer Case Oil - Oil type
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Not applicable
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Transfer Case Oil - Castrol
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Not applicable
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Transfer Case Oil - Capacity (litres)
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Not applicable
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Cooling System Capacity - Litres
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10; 12 (1991 models)
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Fuel Tank Capacity - Litres
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63 (sedan), 68 (wagon)
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Oil and filter renewal - km/months
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10,000
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Coolant renewal - km/months
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40,000
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Fuel filter renewal - km/months
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40,000
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Timing belt renewal - km/months
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Not applicable
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Service connector identification
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Front - Toe-in (mm)
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4 ± 2
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Front - Toe-in (°)
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0°20' ± 10'
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Front - Camber
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-1° ± 30'; -0°30' ± 30' (FE2 sports)
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Front - Caster
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1°30' ± 1°; 2° ± 1° (FE2 sports)
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Front - SAI
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Not specified
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Front - Toe-out on turns
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Not specified
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Front - Lock angle - inner
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Not specified
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Front - Lock angle - outer
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Not specified
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Rear - Toe-in (mm)
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Not applicable
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Rear - Toe-in (°)
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Not applicable
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Rear - Camber
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Not applicable
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Load Conditions
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Unladen, fuel tank full
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