Workshop Manuals Factory service & repair Alfa Romeo
Alfa Romeo 155 Factory Service Manual (1992-1998)03 · Engine – mechanical (Twin Spark)
03 · Engine

Engine block

Make
Alfa Romeo
Model
155 Factory Service Manual
Year
1992–1998
Section
Tighten torques › Engine block
Engine – mechanical (Twin Spark)Engine block

Engine block

Part Nm kgm
Nuts securing main caps to support block (in oil)20 ÷ 115°2.04 ÷ 115°
Screws securing flywheel to crankshaft (with fixative)116.4 ÷ 128.611.87 ÷ 13.1
Nut securing crankshaft pulley (in oil)209 ÷ 23121.3 ÷ 23.55
Screws securing belt tensioner shoe to front cover6 ÷ 80.6 ÷ 0.8
Nuts securing front cover to engine block10.2 ÷ 12.61.04 ÷ 1.28
Nuts securing water pump to front cover7.65 ÷ 9.450.78 ÷ 0.96
Nuts securing water pump to engine block12.75 ÷ 15.751.3 ÷ 1.6
Screws securing thermostat unit to cylinder head8.5 ÷ 10.50.87 ÷ 1.07
Nuts securing rod caps49 ÷ 545 ÷ 5.5
Oil sump drainage cap64.5 ÷ 806.6 ÷ 8.2
Screws and nuts securing oil sump9 ÷ 110.9 ÷ 1.1

Cylinder head

Part Nm kgm
Screws securing timing cover9.75 ÷ 15.751.0 ÷ 1.6
Screws securing cylinder head to front cover14.25 ÷ 15.751.45 ÷ 1.6
Nuts securing camshaft caps (in oil)20 ÷ 222.04 ÷ 2.24
Spark plug tightening (in ISECO Molykote A oil)28 ÷ 34.652.85 ÷ 3.53
Engine coolant temperature sender40 ÷ 49.44.1 ÷ 5.0
Engine minimum oil pressure sensor35.7 ÷ 44.13.64 ÷ 4.5
Engine oil pressure motor8.5 ÷ 10.50.87 ÷ 1.07
Nut securing exhaust side timing gear51 ÷ 635.2 ÷ 6.4
Engine coolant maximum temperature warning light sensor3.8 ÷ 4.70.39 ÷ 0.48
Support securing timing variator to camshaft (with fixative)104.5 ÷ 115.510.7 ÷ 11.8
Screws securing timing gear to timing variator29.5 ÷ 32.53.0 ÷ 3.3
Engine oil temperature sensor21.3 ÷ 26.32.2 ÷ 2.7
Engine oil minimum level warning light sensor252.5

Parts & tools for this job For 1992 Alfa Romeo 155

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