Valve Timing

Camshaft and crankshaft marks are aligned as shown in illustration. On B 18 B, B 18 D and B 20 B engines, intake valve should open at TDC with valve clearance set at 0.057" (1.45 mm). B 20 E & F engines have intake valve opening at 5.5° BTDC with valve clearance set at 0.050 - 0.055" (1.27 - 1.40 mm).

Fig 1: Correct Position - Timing Gears

Courtesy of VOLVO CARS CORPORATION