Section V - Specifications - Group 18 Cylinder Block - Rebuild M11 Page V-27 Component or Assembly (Procedure) Ref.No./Steps Metric U.S. Valve Spring Free Height: A 103.300 mm Nominal 4.0669 in Valve Spring Working Height: B 71.48 mm Nominal 2.8142 in Load for Working Height at 71.48 mm [2.8142 in]: C 1252 N MIN 281 lbf 1584 N MAX 356 lbf Valve Stem O.D. 9.580 mm MIN 0.3772 in 9.633 mm MAX 0.3793 in Valve Head Thickness at O.D. 1 3.15 mm MIN 0.124 in 3.62 mm MAX 0.143 in Valve Guide I.D.
(Installed) Used 9.670 mm MIN 0.3807 in 9.730 mm MAX 0.3831 in New/Rebuilt 9.670 mm MIN 0.3807 in 9.695 mm MAX 0.3817 in Valve Guide Height (Installed) 27.15 mm MIN 1.069 in 27.65 mm MAX 1.089 in Valve Guide Bore I.D. 16.480 mm MIN 0.6488 in 16.500 mm MAX 0.6496 in