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 |
| 1981 |
|
|
|
|
|
|
|
|
|
|
| |
GLC |
90.9 |
1490 |
1x2 Bbl. |
..... |
..... |
9.0:1 |
3.03 |
77 |
3.15 |
80 |
| |
B2000 |
120.2 |
1970 |
1x2 Bbl. |
..... |
..... |
8.6:1 |
3.15 |
80 |
3.86 |
98 |
| |
626 |
120.2 |
1970 |
1x2 Bbl. |
..... |
..... |
8.6:1 |
3.15 |
80 |
3.86 |
98 |
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) |
| 1490 cc |
1.9661-1.9668 (49.938-49.956) |
.0009-.0017 (.023-.042) |
No. 5 |
.004-.006 (.10-.15) |
1.5724-1.5731(39.940-39.956) |
.0009-.0026 (.024-.0066) |
.004-.01 (.11-.26) |
| 1970 cc |
2.4780-2.4786 (62-940-62.955) |
.0012-.0020 (.031-.050) |
No. 5 |
.003-.009 (.08-.24) |
2.0842.2.0848 (52.9440-52.955) |
.0011-.0030 (.027-.077) |
.004-.008 (.11-.21) |
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) |
| 1490 cc |
|
|
|
|
|
|
|
| |
Intake |
1.4173 (36.00) |
45° |
45° |
.055 (1.4) |
.3162-.3168 (8.03-8.05) |
.0007-.0021 (.018-.053) |
..... |
| |
Exhaust |
1.2205 (31.00) |
45° |
45° |
.055 (1.4) |
.3160-.3168 (8.025-8.05) |
.0007-.0023 (.018-.058) |
..... |
| 1970 cc |
|
|
|
|
|
|
|
| |
Intake |
1.6536 (42.00) |
45° |
45° |
.055 (1.4) |
.3162-.3168 (8.03-8.05) |
.0007-.0021 (.018-.053) |
..... |
| |
Exhaust |
1.2992 (33.00) |
45° |
45° |
.055 (1.4) |
.3160-.3168 (8.025-8.05) |
.0007-.0023 (.018-.058) |
..... |
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) |
| 1490 cc & 1970 cc |
.001-.0026 (.026-.065) |
0-.0009 (0-.024) |
..... |
No. 1 |
.008-.016 (.20-.41) |
.0012-.0025 (.030-.064) |
| No. 2 |
.008-.016 (.20-.41) |
.0012-.0025 (.030-.064) |
| Oil |
.012-.035 (.31-.89) |
..... |
VALVE TIMING
| Engine |
INTAKE |
EXHAUST |
| Open (BTDC) |
Close (ABDC) |
Open (BBDC) |
Close (ATDC) |
| 1490 cc |
15° |
55° |
58° |
12° |
| 1970 cc |
| |
B2000 |
14° |
53° |
58° |
9° |
| |
626 |
10° |
57° |
54° |
13° |
CAMSHAFT
| Engine |
Journal Diam. In. (mm) |
Clearance In. (mm) |
Lobe Lift In. (mm) |
| 1490 cc |
|
|
|
| |
Front |
1.6515-1.6522 (41.949-41.965) |
.0014-.0030 (.035-.076) |
..... |
| |
Center |
1.6504-1.6510 (41.919-41.935) |
.0026-.0042 (.065-.106) |
..... |
| |
Rear |
1.6515-1.6522 (41.949-41.965) |
.0014-.0030 (.035-.076) |
..... |
| 1970 cc |
|
|
|
| |
Front |
1.7695-1.7701 (44.945-44.960) |
.0007-.0027 (.019-.069) |
..... |
| |
Center |
1.7691-1.7697 (44.935-44.950) |
.0011-.0031 (.029-.079) |
..... |
| |
Rear |
1.7695-1.7701 (44.945-44.960) |
.0007-.0027 (.019-.069) |
..... |
VALVE SPRINGS
| Engine |
Free Length In. (mm) |
PRESSURE Lbs. @ In. (kg @ mm) |
| Valve Closed |
Valve Open |
| 1490 cc |
1.705 |
63.3@1.319 |
|
| |
(43.3) |
(28.7@33.5) |
..... |
| 1970 cc |
|
|
..... |
| |
Inner |
1.449 |
20.9@1.26 |
|
| |
(36.8) |
(9.5@32) |
|
| |
|
31.4@1.339 |
..... |
| |
Outer |
1.469 |
(14.3@34) |
|
| |
(37.3) |
|
..... |