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 |
| 1977 |
91.0 |
1493 |
1x1-Bbl. |
..... |
..... |
7.5-1 |
2.9 |
73.7 |
3.44 |
87.5 |
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) |
| 1493 cc |
|
|
|
|
|
|
|
| |
Int. |
1.380 |
45° |
45.5° |
..... |
.3107-.3113 |
.0007-.0023 |
..... |
| (34.99) |
(7.89-7.91) |
(.02-.06) |
| Exh. |
1.170 |
45° |
45.5° |
..... |
.3100-.3105 |
.0015-.0030 |
..... |
| (29.71) |
(7.874-7.887) |
(.04-.07) |
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) |
| 1493 cc |
.002-.003 |
|
|
1 |
.012-.022 |
.0015-.0035 |
| (.051-.076) |
(.305-.559) |
(.038-.089) |
| .0002-.0016 |
2 |
.012-.022 |
.0015-.0035 |
| (.005-.041) |
(.305-.559) |
(.038-.089) |
| Oil |
.015-.055 |
..... |
| (.38-.1.40) |
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) |
| 1493 cc |
2.3115-2.3120 |
.0005-.002 |
Rear |
.006-.014 |
1.8750-1.8755 |
.001-.003 |
..... |
| (58.713-58.725) |
(.013-.050) |
(.15-.36) |
(47.625-47.638) |
(.03-.08) |
VALVE SPRINGS
| Engine |
Free Length In. (mm) |
PRESSURE (LBS.) |
| Valve Closed |
Valve Open |
| 1493 cc |
1.52 |
..... |
..... |
| (38.6) |
CAMSHAFT
| Engine |
Journal Diam. in. (mm) |
Clearance in. (mm) |
Lobe Lift in. (mm) |
| 1493 cc |
|
|
|
| |
No. 1 |
1.9659-1.9664 |
.0016-.0036 |
..... |
| (49.93-49.95) |
(.04-.09) |
| No. 2 |
1.9649-1.9654 |
.0026-.0046 |
..... |
| (49.90-49.92) |
(.07-.12) |
| No. 3 |
1.9659-1.9664 |
.0016-.0036 |
..... |
| (49.93-49.95) |
(.04-.09) |
VALVE TIMING
| Engine |
INTAKE |
EXHAUST |
| Open (BTDC) |
Close (ALDC) |
Open (BLDC) |
Close (ATDC) |
| 1493 cc |
18° |
58° |
58° |
18° |
TIGHTENING SPECIFICATIONS
| Application |
Ft. Lbs. (mkg) |
| Cylinder Head |
46 (6.4) |
| Connecting Rod Bolt |
40-45 (5.5-6.2) |
| Rocker Shaft |
32 (4.4) |
| Oil Pan |
20 (2.8) |
| Engine Front Cover |
| |
Small Bolt |
10 (1.4) |
| Large Bolt |
20 (2.8) |
| Water Pump |
20 (2.8) |
| Manifold |
25 (3.5) |
| Crankshaft Pulley |
150 (20.7) |
| Rocker Cover |
2 (.03) |
| Main Bearing Cap Bolts |
65 (9.0) |