Volvo B 21 - Important Information and General Specifications; Tightening Torques; Cylinder Head Specifications

Group 21 Reconditioning engine
fmportant i nformat i on
Important information
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Nrn
Tightaning torquas
Two typas of tightening torques are used in this Ma-
nual:
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CYLINDER HEAD
H ei ght .
Min
he ight af ter ma ch ining
2
1351)20
I. Tightening torque 40 Nm (30 ft.lbs) :: a torque
wrench must
be used.
II. Tightening torque40 Nm (30 ft.lbs) :: correct value,
howeverit is not necessary to use a torque wrench.
Sp
'
9cifications
Group 20 General
114651
Engina typa dasignation, sarial num-
bar and part numbar
Stamped on a plate on left sida of engine.
1977- models: addition al plats on timing gear cover
showing
la st thres digits of part number.
Group 21 Engine assembly
New 146.1 mm{5.7563 in)
145.6 mm (5 .7366 in)