Technical information

Rover SD1 'O' Series Specifications.

'O' Series Engine    
Capacity 1994 cc  
Bore 84.45 mm 3.325 in
Stroke 89 mm 3.504 in
Compression Ratio 9.0-1  
     
Cylinder head mm in
Valve Clearances 0.30 +/- 0.03 0.012+/-0.001
adjust only if less than 0.2 0.008
     
Valve Angle FACE 45deg30mins  
Valve Angle SEAT 45 degrees  
Valve clearance in guide bore INLET 0.03-0.05mm 0.001-0.002in
Valve clearance in guide bore EXHAUST 0.04-0.07mm 0.0015-0.0027in
Valve spring free height 41.81mm 1.646in
Valve Spring fitted height 34.92mm 1.375in
     
Valve clearance Adjustment Shims mm in
     
  2.32 0.091
  2.37 0.093
  2.42 0.095
  2.47 0.097
  2.52 0.099
  2.56 0.101
  2.62 0.103
  2.67 0.105
  2.72 0.107
  2.77 0.109
  2.83 0.111
  2.87 0.113
  2.93 0.115
     
Camshaft mm in
     
Camshaft Bearing Clearance 0.043-0.094 0.0017-0.0037
Camshaft end float 0.07-0.18 0.003-0.007
     
Timing Belt tension    
Deflection pressure required to align belt with line on water pump    
used belt 5kg 11Lb
new belt 6kg 13Lb
     
Oil Pump Bar Lb in2
Oil pressure at idle 4.1-6.2 60-90
Oil pressure at other speeds 2.8-4.1 40-60
Oil Pressure Warning Light 0.4-0.7 6-10
     
Oil Pump Clearances mm in
Housing to outer rotor 0.126-0.229 0.005-0.009
Inner rotor lobe to outer rotor 0.025-0.279 0.001-0.0027
Outer rotor endfloat 0.028-0.068 0.001-0.0027
     
Pistons, Rings and Conrods mm in
     
Piston to bore clearance: below oil control ring 0.02-0.06 0.0008-0.0024
Piston to bore clearance: bottom of skirt 0.01-0.038 0.0004-0.0014
     
Piston pin fit, press fit in conrod    
Minimum torque 1.7kg m 12 Lb ft
fit in piston - hand push @ 16 degrees celcius    
     
Piston Ring Gap mm in
     
Compression Rings 0.03-0.05 0.012-0.020
Oill control rail 0.33-1.4 0.015-0.055
Oil control expander No gap Ends to butt
     
Crankshaft mm in
     
Endfloat 0.025-0.14 0.001-0.005
Main Bearing Clearance 0.025-0.077 0.001-0.003
Big End bearing Clearance 0.038-0.081 0.0015-0.0032
     
Tightening Torques kg m Lb ft
     
Engine Oil Drain Plug 3.7 27
Cylinder Block Coolant Drain Plug 3.7 27
Camshaft Cover 1.8 13
Camshaft Gear Bolt 6.6 48
Camshaft End Cover Bolts 1.3 9
Conrod Big End Nuts 4.5 33
Crankshaft Pulley Bolts 9.5 62
Cylinder Head Bolts 8.3 60
Engine Rear Plate (8mm) 3.0 22
Engine Rear Plate (10mm) 5.1 37
Main Bearing Bolts 10.5 75
Manifolds to Head 2.4 18
Oil Blanking Plate Bolts 1.1 8
Oil Pressure Switch 1.2 9
Oil Pump Backplate 0.3 2
Oil Pump to Block 1.1 8
Oil Separator to Block 3.0 22
Exhaust Manifold Clamp 2.2 16
Exhaust 'U' Bolt Nuts 2.4 18
Other Threads in Aluminium (M6) 1.1 8
Other Threads in Aluminium (M8) 2.5 18
Other Threads in Cast Iron (M6) 1.1 8
Other Threads in Cast Iron (M8) 3.0 22
Other Threads in Cast Iron (M10) 5.1 37

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