Volvo B27A - Page 8

Group 21 Reconditioning engine
Specifications
VALVE SYSTEM
Valve Clearances (varies with engine type)
Valve clearance mm (in)
Intake valves, cold engine
warm engine
Exhaust valve, cold engine
warm engine
Engine type - model year
B 27 A 1976-1979
B 28 A 1980
1981-1982
B27 E 1975-1978
1979-1980 Sweden + Australia
1979-1980 Other markets
B28 E1981-1983
B 27 F1976-1979
B 28 F1980
1981-1982
Type 1
0.10-0.15 (0.004-0.006)
0.15-0.20(0.006-0.008)
0.25-0.30 (0.010-0.012)
0.30-0.35 (0.012-0.014)
X
X
X
X
X
X
X
Type 2
0.20-0.25 (0.008-0.010)
0.25-0.30 (0.010-0.012)
0.30-0.35 (0.012-0.014)
0.35-0.40(0.014-0.016)
X
X
X
Valves mm (in)
29,5°
£
44(1.7322)
7.965-7.980
(0.3135-0.3141)
^
26.5
(1.0433)
Tapered
Intake valves
7.975-7.990
(0.3139-0.3145)
44.5'
59"
37
iT (1.4566)
32 (1.2598)'
Exhaust valves
7.965-7.980
(0.3135-0.3141)
Valve seats mm (in)
1.7-2.1 mm (0.0669-0.0826)
1.3-1.7 mm (0.0511-0.0669)
Intake valve seat
Early types
Intake valve seat
Late types (venturi seat):15° and 60° are
correct angles to reduce seat width.
2.0-2.4 mm (0.0787-0.0944)
Exhaust valve seat