Engine Configuration |
Inline Four, 4-Stroke |
Engine Displacement |
999.8 cc |
Engine Cooling |
Liquid |
Compression Ratio |
12.3:1 |
Combustion Chamber Design |
Pentroof |
Valves Per Cylinder |
4 |
Intake Valves Per Cylinder |
2 (Titanium) |
Exhaust Valves Per Cylinder |
2 (Titanium) |
Bore x Stroke |
76 mm x 55.1 mm |
Conecting Rod Length
(center-to-center) |
104.5 mm |
Connecting Rod Material |
Steel |
Measured Peak Horsepower |
155.11 bhp @ 10,650 rpm |
Measured Peak Torque |
78.52 lbs. - ft. @ 9,750
rpm |
Measured Horsepower-to-weight Ratio |
2.84 pounds per horsepower |
Engine Redline |
13,400 rpm |
Valve Angle (Included) |
11 degrees Intake/
11 degrees Exhaust (22 degrees) |
Combustion Chamber Volume |
22.1 cc |
Valve Train Type |
DOHC, Link-plate Chain Drive, Bucket Followers, Shim-under-bucket Lash Adjustment |
Valve Adjustment Interval |
16,000 miles |
Intake Valve Diameter |
30.5 mm |
Exhaust Valve Diameter |
24.0 mm |
Intake Valve Stem
Diameter |
4.5 mm |
Exhaust Valve Stem Diameter |
4.0 mm |
Intake Valve Maximum
Lift |
9.3 mm |
Exhaust Valve Maximum
Lift |
8.4 mm |
Intake Valve Timing |
|
Open BTDC |
21 degrees |
Close ABDC |
43 degrees |
Duration |
244 degrees |
Exhaust Valve Timing |
|
Open BTDC |
41 degrees |
Close ABDC |
14 degrees |
Duration |
235 degrees |
Valve Timing Measuring
Point |
1.0 mm (lift)
|
Fuel Delivery System |
Keihin Fuel Injection |
Throttle Body Venturi
Size |
46 mm |
Air Filter Type |
Pleated Paper |
Exhaust System Type |
4-2-1 (Stainless Steel) |
Ignition System |
Digital |
Lubrication System |
Wet Sump |
Oil Capacity |
3.9 quarts (3.7 liters) |
Fuel Capacity |
4.7 gallons (17.8 liters) |
Transmission Type |
6-speed, Constant Mesh |
Clutch Type |
Multi-plate, Wet, Back-torque-limiting |
Clutch Actuation System |
Cable |
Clutch Spring Type |
Diaphragm |
Number Of Clutch Springs |
2 |
Number of Clutch Plates |
17 |
Drive Plates |
9 |
Driven Plates |
8 |
Primary Drive |
Gear (Straight-cut) |
Primary Drive Gear Teeth (Ratio) |
79/46 (1.717:1) |
Final Drive Sprocket Teeth
(Ratio) |
42/16 (2.625:1) |
Transmission Gear Teeth (Ratios) |
|
6th |
33/29 (1.138:1) |
5th |
34/28 (1.214:1) |
4th |
32/24 (1.333:1) |
3rd |
33/22 (1.500:1) |
2nd |
32/18 (1.778:1) |
1st |
32/14 (2.286:1) |
Transmission Overall
Ratios |
|
6th |
5.129:1 |
5th |
5.472:1 |
4th |
6.008:1 |
3rd |
6.761:1 |
2nd |
8.014:1 |
1st |
10.303:1 |
|
|