oil capacity FORD SIERRA 1992 2.G DOHC Engine Workshop Manual

General
Engine type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Four-cylinder, in-line, double overhead camshaft
Engine code:
Carburettor engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . N8A
Fuel injection engine without catalyst . . . . . . . . . . . . . . . . . . . . . . . . . N9A
Fuel injection engine with catalyst . . . . . . . . . . . . . . . . . . . . . . . . . . . N9C
Bore . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86.00 mm
Stroke . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86.00 mm
Cubic capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1998 cc
Compression ratio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10.3 : 1
Compression pressure at starter motor speed . . . . . . . . . . . . . . . . . . . . 11 to 13 bars
Maximum continuous engine speed:
N8A engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6050 rpm
All engines except N8A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5950 rpm
Maximum engine power (DIN):
N8A engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 kW at 5600 rpm
N9A engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92 kW at 5500 rpm
N9C engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88 kW at 5500 rpm
Maximum engine torque:
N8A engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174 Nm at 3000 rpm
N9A engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174 Nm at 2500 rpm
N9C engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171 Nm at 2500 rpm
Cylinder bore diameter
Standard class 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86.000 to 86.010 mm
Standard class 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86.010 to 86.020 mm
Oversize 0.15 class A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86.150 to 86.160 mm
Oversize 0.15 class B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86.160 to 86.170 mm
Oversize 0.5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86.500 to 86.510 mm
Chapter 2 Part B:
DOHC engine
Camshafts and cam followers - removal, inspection and refitting . . .21
Crankcase ventilation system - inspection and maintenance . . . . . . .2
Crankshaft and bearings - examination and renovation . . . . . . . . . .31
Crankshaft and main bearings - removal and refitting . . . . . . . . . . . .30
Crankshaft front oil seal - renewal . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Crankshaft rear oil seal - renewal . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Cylinder head - dismantling and reassembly . . . . . . . . . . . . . . . . . . .19
Cylinder head - inspection and renovation . . . . . . . . . . . . . . . . . . . . .20
Cylinder head - removal and refitting (engine in vehicle) . . . . . . . . . .17
Cylinder head - removal and refitting (engine removed) . . . . . . . . . . .18
Engine/automatic transmission assembly - removal and separation . .8
Engine/automatic transmission assembly - reconnection and
refitting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Engine dismantling, examination, renovation and reassembly - general
information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Engine/manual gearbox assembly - removal and separation . . . . . . .7
Engine/manual gearbox assembly - reconnection and refitting . . . . .11Engine - refitting (manual gearbox in vehicle) . . . . . . . . . . . . . . . . . . . .9
Engine - refitting (automatic transmission in vehicle) . . . . . . . . . . . . .10
Engine - removal leaving manual gearbox in vehicle . . . . . . . . . . . . . .5
Engine - removal leaving automatic transmission in vehicle . . . . . . . .6
Engine mountings - renewal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Flywheel/driveplate - removal, inspection and refitting . . . . . . . . . . .22
General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Initial start-up after overhaul or major repair . . . . . . . . . . . . . . . . . . .32
Major operations possible with the engine in the vehicle . . . . . . . . . . .3
Major operations requiring engine removal . . . . . . . . . . . . . . . . . . . . .4
Oil pump drive chain and sprockets - examination and renovation . .28
Oil pump - dismantling, inspection and reassembly . . . . . . . . . . . . .27
Oil pump - removal and refitting . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Pistons and connecting rods - removal and refitting . . . . . . . . . . . . .29
Sump - removal and refitting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Timing chain and sprockets - removal and refitting . . . . . . . . . . . . . .15
Timing chain, sprockets and tensioner - examination and renovation .16
2B•1
Specifications Contents
2B
Unless otherwise stated, procedures are as described for the SOHC engines in Part A of this Chapter.
Easy,suitable for
novice with little
experienceFairly easy,suitable
for beginner with
some experienceFairly difficult,
suitable for competent
DIY mechanic
Difficult,suitable for
experienced DIY
mechanicVery difficult,
suitable for expert
DIY or professional
Degrees of difficulty

Crankshaft
Endfloat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.090 to 0.300 mm (0.004 to 0.012 in)
Main bearing running clearance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.011 to 0.048 mm
Main bearing journal diameter:
Standard (yellow) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54.980 to 54.990 mm
Standard (red) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54.990 to 55.000 mm
Undersize 0.25 (green) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54.730 to 54.750 mm
Main bearing thrustwasher thickness:
Standard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.301 to 2.351 mm (0.090 to 0.093 in)
Oversize 0.38 (yellow) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.491 to 2.541 mm (0.098 to 0.100 in)
Big-end bearing running clearance . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.006 to 0.060 mm
Big-end bearing journal diameter:
Standard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50.890 to 50.910 mm
Undersize 0.25 (green) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50.640 to 50.660 mm
Pistons and piston rings
Piston diameter:
Standard 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .85.970 to 85.980 mm
Standard 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .85.980 to 85.990 mm
Standard service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .85.980 to 85.990 mm
Oversize 0.15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .86.130 to 86.150 mm
Oversize 0.50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .86.470 to 86.490 mm
Piston ring end gap:
Top . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.300 to 0.600 mm (0.012 to 0.024 in)
Centre . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.500 to 0.800 mm (0.020 to 0.032 in)
Bottom (oil control) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.400 to 1.500 mm (0.016 to 0.059 in)
Cylinder head
Valve guide bore . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7.063 to 7.094 mm
Camshaft bearing parent bore diameter . . . . . . . . . . . . . . . . . . . . . . . .26.000 to 26.030 mm
Camshafts
Endfloat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.020 to 0.260 mm (0.001 to 0.010 in)
Valves
Valve timing:
Carburettor engines:
Inlet opens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13º BTDC
Inlet closes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39º ABDC
Exhaust opens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43º BBDC
Exhaust closes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13º ATDC
Fuel injection engines:
Inlet opens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13º BTDC
Inlet closes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51º ABDC
Exhaust opens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43º BBDC
Exhaust closes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13º ATDC
Valve spring free length:
Inner spring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48.200 mm (1.899 in)
Outer spring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46.800 mm (1.844 in)
Inlet valve stem diameter:
Standard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7.025 to 7.043 mm
Oversize 0.2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7.225 to 7.243 mm
Oversize 0.4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7.425 to 7.443 mm
Oversize 0.6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7.625 to 7.643 mm
Oversize 0.8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7.825 to 7.843 mm
Exhaust valve stem diameter:
Standard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6.999 to 7.017 mm
Oversize 0.2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7.199 to 7.217 mm
Oversize 0.4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7.399 to 7.417 mm
Oversize 0.6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7.599 to 7.617 mm
Oversize 0.8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7.799 to 7.817 mm
Lubrication system
Oil type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Multigrade engine oil, viscosity range SAE 10W/30 to 20W/50, to API
SG/CD or better
Oil capacity:
With filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4.5 litres (7.9 pints)
Without filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4.0 litres (7.0 pints)
Oil filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Champion C102
2B•2DOHC engine