B 20 E & F Engines
- Drain cooling system. Remove positive battery cable. Disconnect and/or remove all necessary hoses and electrical wires, marking them for reinstallation.
- Remove ground cable from intake duct and extract cable harness. Remove lock pin and bracket for throttle cable. Remove alternator bracket from cylinder head. Remove intake duct bracket and duct nuts. Remove valve cover, gasket, push rods and cylinder head. To install, reverse removal procedure.
CYLINDER HEAD TORQUE SPECIFICATIONS
| Step One |
Step Two |
Step Three |
| 29 ft. lbs. (4.0 mkg) |
58 ft. lbs. (8.0 mkg) |
65 ft. lbs. (9.0 mkg) |
Courtesy of VOLVO CARS CORPORATION VALVES
| Engine & Valve |
Head Diam. In. (mm) |
Face Angle |
Seat Angle |
Seat Width In. (mm) |
Stem Diameter In. (mm) |
Stem Clearance In. (mm) |
Valve Lift In. (mm) |
| 1963-68 |
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| B 18 B & D |
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Intake |
1.58 (40) |
45° |
44.5° |
.055 (1.4) |
.3419-.3425 (8.68-8.70) |
.0010-.0022 (.025-.056) |
|
| |
Exhaust |
1.38 (35) |
45° |
44.5° |
.055 (1.4) |
.3403-.3409 (8.64-8.66) |
.0026-.0037 (.066-.094) |
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| 1969-73 |
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| B 20 B, E & F |
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Intake |
1.654 (42) |
45° |
44.5° |
.080 (2.0) |
.3132.3138 (7.95-7.97) |
.0012-.0026 (.030-.066) |
|
| |
Exhaust |
1.378 (35) |
45° |
44.5° |
.080 (2.0) |
.3120-.3126 (7.92-7.94) |
.0024-.0038 (.061-.097) |
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