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GENERAL SPECIFICATION DATA 7 INFORMATION ENGINE - BMW DIESEL Type Indirect injection, turbocharged, intercooled ................................................................................. Number of cylinders 6 ......................................................... Bore 80.00 mm ................................................................................. 3.15 in Stroke 82.80 mm ............................................................................... 3.26 in Capacity 2497 cm 3 ........................................................................... 152 in 3 Compression ratio 22.5:1 ± 1:1 ............................................................ Valve operation OHC chain driven ................................................................ Turbo charger Mitsubishi TD04 - 11G4 .................................................................. Camshaft Chain ................................................................................. Number of bearings 7 .......................................................... Cylinder head 0.1 mm ............................................................. 0.004 in Lateral warp 0.05 mm ..................................................................... 0.002 in Valves and guides Inlet 36.0 mm .................................. 1.42 in Exhaust 31.0 mm ........................... 1.22 in Stem diameter - Standard: Inlet 6.97 mm .................................. 0.274 in Service limit 6.95 mm ..................... 0.273 in Exhaust 6.95 mm ........................... 0.273 in Service limit 6.93 mm ..................... 0.272 in Stem diameter - 1st oversize: Inlet 7.07 mm .................................. 0.28 in Service limit 7.05 mm ..................... 0.277 in Exhaust 7.06 mm ........................... 0.278 in Service limit 7.04 mm ..................... 0.27 in Stem diameter - 2nd oversize: Inlet 7.17 mm .................................. 0.282 in Service limit 7.15 mm ..................... 0.28 in Exhaust 7.16 mm ........................... 0.281 in Service limit 7.14 mm ..................... 0.279 in Valve head stand-down: Inlet 0.65 to 0.85 mm .................................. 0.02 to 0.03 in Exhaust 0.85 to 1.05 mm ........................... 0.03 to 0.04 in Valve head oversizes - increased thickness 0.25 and 0.50 mm .................... 0.01 and 0.02 in Valve tilt - inlet and exhaust 0.5 mm ............................................. 0.02 in Valve seats: 45 ° ± 10’ ............................................................... Correction angle - outside 15 ° ................................................ Correction angle - inside 60 ° .................................................. Seat face outside diameter Inlet 35.5 mm .................................. 1.4 in Exhaust 30.6 mm ........................... 1.2 in Valve seat width Inlet 1.75 to 2.25 mm .................................. 0.007 to 0.09 in Exhaust 2.60 to 2.90 mm ........................... 0.10 to 0.11 in Valve guides: 7.0 mm .......................................................................... 0.275 in 1st oversize valve stem 7.1 mm .................................................... 0.28 in 2nd oversize valve stem 7.2 mm ................................................... 0.283 in |