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 |
108 |
1770 |
1x2-Bbl. |
70 @ 2400 |
93 @ 2400 |
9.0:1 |
3.35 |
85 |
3.08 |
78 |
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) |
| 1770 cc |
|
|
|
|
|
|
|
| |
Intake |
..... |
44.5° |
45° |
.047-.063 (1.2-1.6) |
.3136.3142 (7.97-7.98) |
.0010-.0024 (.025-.061) |
..... |
| |
Exhaust |
..... |
44.5° |
45° |
.047-.063 (1.2-1.6) |
.3136.3142 (7.97-7.98) |
.0012-.0026 (.030-.066) |
..... |
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) |
| 1770 cc |
.002-.003 (.05-.07) |
Press Fit |
Press Fit |
No. 1 |
.004-.010 (.10-.25) |
.0008-.0024 (.02-.06) |
| No. 2 |
.006-.012 (.15-.30) |
.0006-.0022 (.015-.055) |
| Oil |
.008-.028 (.20-.70) |
..... |
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) |
| 1770 cc |
2.282-2.284 (57.976-58.000) |
.0009-.0019 (.024-.048) |
Center |
.0008-.009 (.02-.22) |
1.8888-1.8898 (47.976-48.000) |
.0009-.0019 (.024-.048) |
.006-.010 (.16-.26) |
CAMSHAFT
| Engine |
Journal Diam. In. (mm) |
Clearance In. (mm) |
Lobe Lift In. (mm) |
| 1770 cc |
|
|
|
| |
No. 1 |
1.829-1.830 (46.46-46.48) |
.0010-.0026 (.025-.066) |
..... |
| |
No. 2 |
1.819-1.820 (46.21-46.23) |
| |
No. 3 |
1.809-1.810 (45.96-45.98) |
| |
No. 4 |
1.800-1.801 (45.71-45.73) |
| |
No. 5 |
1.790-1.791 (45.46-45.48) |
VALVE SPRINGS
| Engine |
Free Length In. (mm) |
PRESSURE (LBS.) Lbs. @ In. (kg @ mm) |
| Valve Closed |
Valve Open |
| 1770 cc |
1.657 (42.1) |
57.9@1.484 (26.3@37.7) |
..... |