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 |
|
|
|
|
|
|
|
|
|
|
| |
128 |
78.7 |
1290 |
1-Bbl. |
62@6000 |
67@4000 |
8.5-1 |
3.39 |
86 |
2.19 |
55.5 |
| |
X1/9 |
78.7 |
1290 |
1-Bbl. |
61@5800 |
76@4000 |
8.5-1 |
3.39 |
86 |
2.19 |
55.5 |
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) |
| 1290cc |
|
|
|
|
|
|
|
| |
Intake |
1.4173 (36) |
45° |
45° |
.0787 (2) |
.3139-.3146 (7.974-7.992) |
.0012-.0026 (.030-.066) |
.3839 (9.75) |
| |
Exhaust |
1.2205 (31) |
45° |
45° |
.0787 (2) |
.3139-.3146 (7.974-7.992) |
.0012-.0026 (.030-.066) |
.3839 (9.75) |
VALVE SPRINGS
| Engine |
Free Length |
PRESSURE (LBS.) |
| Valve Closed |
Valve Open |
| 1290 cc |
|
|
|
| |
Inner |
1.646 (41.81) |
33@1.220 (15@31.00) |
62@.846 (28@21.49) |
| |
Outer |
2.122 (53.90) |
86@1.417 (39@36.00) |
131@1.043 (60@26.49) |
VALVE TIMING
| Engine |
INTAKE |
EXHAUST |
| Open (BTDC) |
Close (ABDC) |
Open (BBDC) |
Close (ATDC) |
| 1290 cc |
10° |
54° |
54° |
10° |
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) |
| 1290cc |
.0020-.0028 (.05-.07) |
.0001-.0003 (.002-.008) |
.0004-.0006 (.010-.016) |
No. 1 |
.0118-.0177 (.30-.45) |
.0018-.0030 (.045-.077) |
| No. 2 |
.0118.0177 (.30-.45) |
.0016-.0028 (.040-.072) |
| No. 3 |
.0098-.0157 (.25-.40) |
.0012-.0024 (.030-.062) |
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) |
| 1290cc |
1.9994-2.0002 (50.785-50.805) |
.0016-.0033 (.040-.085) |
|
.0021-.0104 (.055-.265) |
1.7913-1.7920 (45.498-45.518) |
.0014-.0034 (.036-.086) |
......... |
CAMSHAFT
| Engine |
Journal Diam. In. (mm) |
Clearance In. (mm) |
Lobe Lift In. (mm) |
| 1290cc |
|
|
|
| |
No. 1 |
1.1789-1.1795 (29.944-29.960) |
.0011-.0028 (.029-.070) |
.... |
| |
No. 2 |
1.8872-1.8878 (47.935-47.950) |
.0012-.0028 (.030-.070) |
.... |
| |
No. 3 |
1.8951-1.8957 (48.135-48.150) |
.0012-.0028 (.030-.070) |
.... |
| |
No. 4 |
1.9030-1.9035 (48.335-48.350) |
.0012-.0028 (.030-.070) |
.... |
| |
No. 5 |
1.9108-1.9114 (48.535-48.550) |
.0012-.0028 (.030-.070) |
.... |
TIGHTENING SPECIFICATIONS
| Application |
Ft. Lbs. (mkg) |
| Cylinder Head Bolts |
69 (9.5) |
| Cylinder Head Nuts |
69 (9.5) |
| Main Bearing Cap Bolts |
58 (8.0) |
| Connecting Rod Cap Bolts |
36 (5.0) |
| Intake and Exhaust Manifold Nuts |
22 (3.0) |
| Camshaft Sprocket Bolt |
61 (8.5) |
| Timing Belt Tensioner Pulley Nut |
33 (4.5) |
| Crankshaft Pulley and Sprocket Nut |
101 (14.0) |
| Flywheel-to-Crankshaft Bolts |
61 (8.5) |