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 |
| 1980 |
|
|
|
|
|
|
|
|
|
|
| |
924 |
121 |
1984 |
Fuel Inj. |
110@5750 |
111@3500 |
8.5:1 |
3.41 |
86.5 |
3.32 |
84.4 |
| |
924 Turbo |
121 |
1984 |
Fuel Inj. |
147@5500 |
147@3000 |
7.5:1 |
3.41 |
86.5 |
3.32 |
84.4 |
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) |
| 1984 cc |
|
|
|
|
|
|
|
| |
Int. |
1.575 |
45° |
45° |
.087-.118 |
.3532 |
.0157 |
..... |
| |
|
(40) |
|
|
(2.2-3.0) |
(8.97) |
(0.4) |
..... |
| |
Exh. |
1.299 |
45° |
45° |
.087-.118 |
.3524 |
.020 |
|
| |
|
(33) |
|
|
(2.2-3.0) |
(8.95) |
(0.5) |
|
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) |
| 1984 cc |
.0012 |
..... |
.0004-.0008 |
..... |
.012-.020 |
.0016-.0028 |
| |
(.03) |
|
(.01-.02) |
|
(.3-.5) |
(.04-.07) |
CRANKSHAFT MAIN & CONNECTING ROD BEARINGS
| |
MAIN BEARINGS |
CONNECTING ROD BEARINGS |
| Engine |
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) |
| 1984 cc |
2.518-2.519 |
.0008-.0031 |
3 |
.004-.007 |
1.888-1.889 |
.0008-.0027 |
.002-.003 |
| |
(63.95-63.97) |
(.02-.08) |
|
(.10-.18) |
(47.95-47.97) |
(.02-.07) |
(.05-.08) |
VALVE TIMING
| Engine |
INTAKE |
EXHAUST |
| Open (BTDC) |
Close (ABDC) |
Open (BBDC) |
Close (ATDC) |
| 1984 cc |
6° |
42° |
47° |
2° |
CAMSHAFT
| Engine |
Journal Diam. In. (mm) |
Clearance In. (mm) |
Lobe Lift In. (mm) |
| 1984 cc |
1.0213-1.0220 |
.0015-.0032 |
..... |
| |
(25.94-25.96) |
(.040-.081) |
|
TIGHTENING SPECIFICATIONS
| Application |
Ft.Lbs. (mkg) |
| Hexagon Cylinder Head Bolts |
|
| |
Cold |
72 (10) |
| |
Warm |
86 (12) |
| Polygon Cylinder Head Bolts |
|
| |
924 |
47 (6.5) Plus 1/2 Turn |
| |
924 Turbo |
|
| |
|
Step 1 |
29.5 (4.1) |
| |
|
Step 2 |
59 (8.2) |
| |
|
Step 3 |
81 (11.2) |
| Main Bearing Caps |
58 (8) |
| |
No. 5 Allen Head Bolt |
47 (6.5) |
| Connecting Rod Nuts |
43 (6) |
| Flywheel |
65 (9) |
| Crankshaft Pulley |
180 (25) |
| Exhaust Manifold |
18 (2.5) |
| Intake Manifold |
17 (2.4) |
| Camshaft Bearing Cap Nuts |
12-15 (1.6-2.1) |
| Camshaft Bearing Cap Bolts |
7 |
| Camshaft Sprocket Bolt |
58 (8) |