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BMW 2002: Engine specifications + data

Car Directory
Model
2002
2002 A
2002 Ti
2002 tii
Bore mm (in) 89 (3.150)
Stroke mm (in) 80 (3.150)
Stroke/bore ratio 0.89
Capacity (fiscal) cm3 (in3) 1977 (120.66)
Capacity (effective) cm3 (in3) 1990 (121.44)
Compression ratio 8.3:1 9.5:1
Max output kW (bhp-DIN) 73.55 (100) 88.25 (120)
at engine speed rev/min 5500 5800
Cutout perates at rev/min 6600 +- 150 6600 +- 150 6600 +- 150 6600 +- 150
Max. continuous engine speed rev/min 6000 6000 6000 6000
Max. permissible engine speed rev/min 6400 6400 6400 6400
Max torque Nm (mkp) 160 (16.0) 160 (16.0) 170.0 (17.0) 181 (18.1)
Max torque (lb. ft) 116 116 123 131
at engine speed rev/min 3500 3500 3600 4500
Mean piston speed m/sec 14.7 14.7 14.7 15.4
Mean piston speed (ft/min) 2894 2894 2894 3031
at engine speed rev/min 5500 5500 5500 5800
Compression test bar (lb/in2) good above 10.5 (149.3)
normal 9.5 – 10.5 (135.1 – 149.3)
poor below 9.0
Test procedure Use calibrated compression tester, with battery fully charged, engine at normal operating temperature and throttle butterfly fully open. Turn engine over at starting speed.
Fuel consumption (DIN 70030 standard test method liters/100 km (Imp./US miles/ gal) 10.0 (28.3/23.5) 10.0 (28.3/23.5) 10.0 (28.3/23.5) 9.9 (28.5/23.8)
Engine lubrication: Lubrication system Pressure feed circulation with full-flow filter, rotor oil pump or gear oil pump with chain drive from crankshaft, sheet steel sump
Oil filter: Pressure relief valve opening pressure bar (lb/in2) 2.2 ±0.3 (31.3 + 4.3)
Oil pump Rotor oil pump (Eaton system); previously gear type pump
Oil pressure telltale illuminated below bar (lb/in2) 0.2…0.5 (2.8…7.1)
Oil capacity litres (Imp pints/US quart) 4 (7.0/4.2) +0.25 (-0.44/0.5) for filter when replacing
Max oil consumption 1/100km 0.2
(miles/Imp pint) 175
(miles/US quart) 295
Oil grade Brand-name HD oil for 4-stroke spark-ignition engines
Viscosity at temperatures mainly above 30°C (86°F) SAE 40 single-grade oil or SAE 20 W 50 multigrade oil
the whole year above —10°C (18°F) SAE 30 single-grade oil or SAE 20 W 40, SAE 20 W 50 multigrade oil
mainly above 10°C (50°F) SAE 20 single-grade oil or SAE 10 W 30, SAE 10 W 40, SAE 10 W 50 multigrade oil
Model
2002
2002 A
2002 Ti
2002 tii
Oil pump
Oil pressure at engine idling speed bar (lb/in2) 1.8…1.2 (11.4…17.1)
0.5…1.5 (7.1 …21.4)
at 4000 rev/min bar (lb/in2) approx. 4.0 (approx. 56.9)
Relief valve opening pressure bar (lb/in2) 4 12…4.5 (58.5…63.9) 4…5 (56.9…71.1)
Free length of pressure relief spring mm (in) 68 (2.68)
Play outer rotor/ pump housing mm (in) 0.1 +0.05 (0.0039 +0.0020)
Rotor outer diameter mm (in) 57.1 -0.025 (2.248 – 0.001)
Housing inner diameter mm (in) 57.2 + 0.025 (2.252 + 0.001)
Rotor height mm (in) -0.015 (-0.00059)
16 (0.6299)
-0.045 (-0.00177)
Housing depth mm (in) +0.050 (+0.0019)
16 (0.6299)
+0.020 (+0.0008)
Axial play rotor (inner/outer) /housing mm (in) 0.035…0.095 (0.001374)
Gap inner/outer rotor mm (in) 0.12…0.20 (0.0047…0.0079)
Max. depth of cover wear mm (in) 0.05 (0.0020)
Distance between housing partition and gear wheel bearing surface at hub mm (in) 42.7±0.1 (1.681 ±0.0039) 34.5±0.1 (1.358±0.0039)
Drive to rotor type oil pump 3/8 x 5/32 single roller chain
Number of links 46
Number of chain sprocket teeth (1) 18
Number of chain sprocket teeth (2) 27
Model
2002
2002 A
2002 Ti
2002 tii
Valve clearances:
Adjustment with engine at operating temperature mm (in} 0.20 … 0.25 (0.0079 … 0.0098)
Valve clearance adjustment by eccentrics at rockers
Sequence of adjustment TDC on Cylinder No. Valve overlap on Cylinder No.
1 4
3 2
4 1
2 3
Valve timing: with 0.5 mm (0.02 in) clearance between cam base circle and rocker pad
Inlet opens °CS 4°BTDC
Inlet closes °CS 52°ABD
Exhaust opens °CS 52°BBDC
Exhaust closes °CS 4°ATDC
Total period °CS 236°
Valve timing: with 0.28 mm (0.011 in) clearance between cam base circle and rocker pad
Inlet opens °CS 18°BTDC
Inlet closes °CS 66°ABDC
Exhaust opens °CS 66°BBDC
Exhaust closes °CS 18°ATDC
Total period °CS 264°
Model
2002
2002 A
2002 Ti
2002 tii
Valve gear:
Valve operation by light alloy rockers with case-hardened pads and overhead camshaft
Camshaft drive duplex roller chain with automatic oil-damped chain tensioner with recoil safety device
Timing chain 3/8″x7/32
Roller diameter mm (in) 6.35 (0.25)
Number of links 94
Valves:
Overall length
Inlet mm (in) 103.8+0.2 (4.0867+0.0079)
Exhaust mm (in) 104.3+0.2 (4.1063+0.0079)
Valve head dia.
Inlet mm (in) 0 (0)
44 (1.7323)
-0.16 (-0.006)
Exhaust mm (in) 0 (0)
38 (1.496)
-0.16 (-0.006)
Valve stem dia.
Inlet mm (in) -0.025 (-0.00098)
8 (0.315)
-0.040 (-0.00157)
Exhaust mm (in) -0.040 (-0.00157)
8 (0.315)
-0.055 (-0.00217)
Min edge thickness of valve head
Inlet mm (in) 1.5+0.10 (0.059+0.00394)
Exhaust mm (in) 2.0+0.15(0.078+0.00591)
Min. edge thickness of valve head:
Matching limit
Inlet mm (in) 1.0+0.1 (0.0393+0.00394)
Exhaust mm (in) 1.5±0.15 (0.059±0.00591)
Valve seat angle
Inlet 45°30′ + 30′
Exhaust 45°30’+ 30′
Max. permissible runout of valve seat/stem
Inlet mm (in) 0.02 (0.00079)
Exhaust mm (in) 0.02 (0.00079)

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