2A•2 Engine in-car repair procedures
Engine codes
The engine code is situated on the left-hand rear of the cylinder block on models manufactured up to 1993, and on the left-hand front of the
cylinder block on models manufactured from 1994. The code is stamped directly on the cylinder block.
B = Petrol engine
L = Turbocharged engine with intercooler, power output 1
R = Turbocharged engine with intercooler, power output 2
S = Turbocharged engine
E = Turbocharged engine with intercooler, light-pressure turbocharger
LM = L specification, Manual transmission model
LA = L specification, Automatic transmission model
Camshafts
Drive Chain from crankshaft
Number of bearings 5 per camshaft
Camshaft bearing journal diameter (outside diameter) 28.922 to 28.935 mm
Endfloat:
Up to 1993 0.14 to 0.35 mm
1994
on 0.08 to 0.35 mm
Lubrication system
Oil pump type Bi-rotor type, driven off the crankshaft
Minimum oil pressure at 80°C 2.7 bars at 2000 rpm
Oil pressure warning switch operating pressure 0.3 to 0.5 bars
Clearance between pump outer rotor and timing cover housing 0.03 to 0.08 mm
Oil cooler thermostat opens at:
B202 90 °C
B234 up to 1993 75 °C
B204 and B234 from 1994
107 °C
Torque wrench settings Mm lbf ft
Automatic transmission driveplate:
Models up to 1990 (17 mm head) 60 44
Models from 1991 to 1993 (19 mm head) 85 63
Models from 1994 on 95 70
Balance shaft chain idler sprocket 25 18
Balance shaft sprocket 42 31
Big-end bearing cap nuts:
B202/B204 engines 55 41
B234 engines 48 35
Camshaft bearing cap 15 11
Camshaft sprocket 63 47
Crankshaft pulley bolt:
1985
to 1990 190 140
1991
on 175 129
Cylinder head bolts:
Stage 1 60 44
Stage 2 80 59
Stage 3 Angle-tighten a further 90° Angle-tighten a further 90°
Cylinder head cover 15 11
Engine oil drain plug 25 18
Engine-to-transmission bolts 70 52
Flywheel:
Models up to 1993 (17 mm head) 60 44
Models up to 1993 (19 mm head) 85 63
Models from 1994 on - 80 59
Main bearing cap bolts 110 81
Oil cooler hose unions 18 13
Oil pump on B202 engine (except through-bolts) 8 6
Oil pump on B202 engine (though-bolts) Same as timing cover bolts - see below
Piston cooling jet:
Up to 1993 23 17
1994
on 18 13
Plug for camshaft chain tensioner 22 16
Plug for oil cooler thermostat 60 44
Plug for oil pressure reducing valve 30 22
Sump bolts 22 16
Timing chain tensioner body 63 47
Timing chain tensioner spring plug (1989 on) 22 16
Timing cover bolts:
Models up to 1993 20 15
Models from 1994 on 25 18