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 |
273 |
4474 |
Fuel Inj. |
219@5250 |
245@3600 |
8.5:1 |
3.74 |
95.0 |
3.11 |
78.9 |
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) |
| 4474 cc |
|
|
|
|
|
|
|
| |
Intake |
1.677 |
45° |
45° |
..... |
.3498 |
..... |
..... |
| (43) |
(8.97) |
| Exhaust |
1.482 |
45° |
45° |
..... |
.3490 |
..... |
..... |
| (38) |
(8.95) |
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) |
| 4474 cc |
.0014 |
Interference |
Interference |
..... |
..... |
..... |
| (.036) |
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) |
| 4474 cc |
2.730 |
.0008-.0038 |
No. 3 |
.0042-.0121 |
2.028 |
.0008-.0027 |
..... |
| (70.0) |
(.070-.098) |
(.110-.312) |
(52.0) |
(.02-.07) |
VALVE TIMING
| Engine |
INTAKE |
EXHAUST |
| Open (ATDC) |
Close (ALDC) |
Open (BLDC) |
Close (BTDC) |
| 4474 cc |
8° |
55° |
38° |
2° |
TIGHTENING SPECIFICATIONS
| Application |
Ft. Lbs. (mkg) |
| Cylinder Head Bolts |
| |
Step 1 |
14 (2.0) |
| Step 2 |
36 (5.0) |
| Step 3 |
61 (8.5) |
| Main Bearing Carrier |
| |
Step 1 |
14 (2.0) |
| Step 2 |
29 (4.0) |
| Step 3 |
| |
|
10 mm |
38-41 (5.2-5.7) |
| 12 mm |
43-47 (6.0-6.5) |
| Connecting Rod Nuts |
42-46 (5.8-6.3) |
| Camshaft Housing |
33 (4.5) |
| Flywheel |
69-73 (9.5-10.0) |
| Front Pulley |
181-188 (25.0-26.0) |
| Camshaft Pulley |
29-33 (4.0-4.5) |
| Oil Pump |
| |
Step 1 |
11 (1.5) |
| Step 2 |
14-16 (2.0-2.2) |
| Spark Plugs |
18-25 (2.5-3.5) |