11.7 Technical Data 11 Engine F 650 CS Valve seat width Inlet mm (in) Wear limit mm (in) Exhaust mm (in) Wear limit mm (in) 1.05...1.35 (0.041...0.053) 1.60 (0.063) 1.25...1.55 (0.049...0.061) 2.2 (0.087) Valve guide Inlet internal dia. mm (in) Wear limit mm (in) Exhaust internal dia. mm (in) Wear limit mm (in) 5.006...5.018 (0.1971...0.1976) 5.080 (0.2) 5.006...5.018 (0.1971...0.1976) 5.080 (0.2) Bucket tappets (wear limit) Extl. dia. mm (in) Radial play in cylinder head mm (in) Guide dia. in cylinder head mm (in) 33.400 (1.315) 0.200 (0.0079) 33.600 (1.322) Valve spring On installation (free length) mm (in) Wear limit mm (in) min.
40.5 (1.59) 39.0 (1.535) Camshafts Wear limit, inlet and exhaust Bearing journals mm (in) 21.95 (0.864) Cam height, inlet mm (in) 39.35...39.45 (1.545...1.553) Cam height, exhaust mm (in) Wear limit, inlet mm (in) Wear limit, exhaust mm (in) 39.15...39.25 (1.541...1.545) 39.25 (1.545) 39.05 (1.537) Bearing bore dia. in camshaft carrier mm (in) 22.040 (0.868) Oil pressure control valve Coil spring length, relaxed mm (in) min. 14.0 (0.55) Oil retaining valve Coil spring length, relaxed mm (in) min. 14.5 (0.57) Piston Piston dia.
“A” Installed dimension mm (in) Wear limit mm (in) 99.975...99.985 (3.9361...3.9365) 99.940 (3.9347) Installed clearance mm (in) Wear limit mm (in) 0.015...0.040 (0.0006...0.0016) 0.090 (0.0035) Piston dia. “B” Installed dimension mm (in) Wear limit mm (in) 99.985...99.995 (3.9365...3.9369) 99.950 (3.935) Installed clearance mm (in) Wear limit mm (in) 0.015...0.040 (0.0006...0.0016) 0.090 (0.0035)