Engine Specifications
GENERAL SPECIFICATIONS
| Year |
Displ. |
Carburetor |
HP at RPM |
Torque (Ft. Lbs. at RPM) |
Compr. Ratio |
Bore |
Stroke |
| cu. ins. |
cc |
in. |
mm |
in. |
mm |
| 1978 |
|
|
|
|
|
|
|
|
|
|
| |
530i |
182 |
2986 |
Fuel Inj. |
175@5500 |
188@4500 |
8.1:1 |
3.504 |
89 |
3.150 |
80 |
| 633CSi & 733i |
196 |
3210 |
Fuel Inj. |
177@5500 |
195@4000 |
8.4:1 |
3.504 |
89 |
3.386 |
86 |
VALVES
| Engine & Valve |
Head Diam. In. (mm) |
Face Angle |
Seat Angle |
Seat Width In. (mm) |
Stem Diameter In. (mm) |
Stem Clearance In. (mm) |
Valve Lift In. (mm) |
| 2986 cc & 3210 cc |
|
|
|
|
|
|
|
| |
Inta ke |
1.811 |
45°30' |
45° |
.063-.079 |
.3134-.3140 |
.0010-.0022 |
..... |
| |
(46.0) |
|
|
(1.6-2.0) |
(7.960-7.975) |
(.025-.055) |
|
| |
Exhaust |
1.496 |
45°30' |
45° |
.079-.095 |
.3128-.3134 |
.0016-.0027 |
..... |
| |
(38.0) |
|
|
(2.0-2.4) |
(7.945-7.960) |
(.040-.070) |
|
VALVE SPRINGS
| Engine |
Free Length In. (mm) |
PRESSURE Lbs. @ In. (kg @ mm) |
| Valve Closed |
Valve Open |
| 2986 cc & |
1.712 |
64±2.5@ 1.480 |
154±6@1.122 |
| 3210 cc |
(43.5) |
(29.0±1.2@37.6) |
(70.0±2.8@28.5) |
PISTONS, PINS, RINGS
| Engine |
PISTONS |
PINS |
RINGS |
| Clearance In. (mm) |
Piston Fit In. (mm) |
Rod Fit In. (mm) |
Rings |
End Gap In. (mm) |
Side Clearance In. (mm) |
| 2986 cc & |
.0016-.0018 |
.0000-.0002 |
.0002-.0005 |
No. 1 |
.012-.020 |
.002-.004 |
| |
3210 cc |
(.040-.045) |
(.001-.005) |
(.005-.013) |
|
(.30-.50) |
(.06-.09) |
| .0003-.0006 |
No. 2 |
.008-.016 |
.001-.002 |
| (.008-.016) |
|
(.20-.40) |
(.03-.06) |
| |
Oil |
.010-.016 |
.0008-.002 |
| |
|
(.25-.40) |
(.02-.05) |
CRANKSHAFT MAIN & CONNECTING ROD BEARINGS
| Engine |
MAIN BEARINGS |
CONNECTING ROD BEARINGS |
| Journal Diam. In. (mm) |
Clearance In. (mm) |
Thrust Bearing |
Crankshaft End Play In. (mm) |
Journal Diam. In. (mm) |
Clearance In. (mm) |
Side Play In. (mm) |
| 2986 cc & 3210 cc |
|
|
|
|
|
|
|
| |
Red Code |
2.3614-2.3618 |
.0012-.0028 |
No. 4 |
.0033-.0069 |
1.8888-1.8894 |
.0009-.0027 |
..... |
| |
(59.98-59.99) |
(.030-.070) |
|
(.085-.174) |
(47.975-47.991) |
(.023-.069) |
|
| |
Blue Code |
2.3610-2.3614 |
.0012-.0027 |
|
|
|
|
|
| |
(59.97-59.98) |
(.030-.068) |
|
|
|
|
|
CAMSHAFT
| Engine |
Journal Diam. In. (mm) |
Clearance In. (mm) |
Lobe Lift In. (mm) |
| 2986 cc & 3210 cc |
|
|
|
| |
No. 1 |
1.3764-1.3770 |
.0013-.003 |
.2802 |
| |
(34.96-34.98) |
(.034-.075) |
(7.12) |
| No. 2 |
1.7304-1.7310 |
| |
(43.95-43.97) |
| No. 3 |
1.7704-1.7710 |
| |
(44.97-44.98) |
| No. 4 |
1.8094-1.8100 |
| |
(45.96-45.97) |
VALVE TIMING
| Engine |
INTAKE |
EXHAUST |
| Open (BTDC) |
Close (ALDC) |
Open (BLDC) |
Close (ATDC) |
| 2986 cc & |
14° |
54° |
54° |
14° |
| |
3210 cc |
26° |
66° |
66° |
26° |
TIGHTENING SPECIFICATIONS
| Application |
Ft. Lbs. (mkg) |
| Cylinder Head Bolts |
| |
1st Stage |
26-32 (3.5-4.5) |
| |
2nd Stage |
49-52 (6.8-7.2) |
| |
3rd Stage |
56-59 (7.8-8.2) |
| Main Bearing Bolts |
42-45 (5.8-6.3) |
| Rod Cap Nuts |
38-41 (5.3-5.7) |
| Camshaft Thrust Plate |
101-108 (14.0-15.0) |
| Upper Front Engine Cover |
7-8 (0.9-1.1) |
| Lower Front Engine Cover |
7-8 (0.9-1.1) |
| Oil Pan Bolts |
7-8 (0.9-1.1) |
| Timing Chain Tensioner Plug |
22-29 (3.0-4.0) |
| Rocker Arm Clamp Bolt |
6.5-8.0 (0.8-1.1) |
| Flywheel Bolts |
72-84 (10.0-11.6) |
| Crankshaft Pulley Nut |
318-333 (44.0-46.0) |
| Oil Pump Regulator Plug |
26-30 (3.6-4.1) |
| Camshaft Oil Line Hollow Bolt |
8-9 (1.1-1.3) |