Specifications

Table 3-1. Engine General

ITEM

DATA

Number of cylinders

2

Type

4-cycle, 60°, liquid cooled V-twin

Torque

(domestic model at crank)

100 Nm (74 ft-lbs) @ 7000 rpm

Bore

100 mm (3.94 in.)

Stroke

72 mm (2.835 in.)

Piston displacement (approx.)

1130 cc (69 cubic in.)

Max. sustained engine speed

9000 rpm

Idle speed

1200 rpm ± 50

Engine & transmission weight

89.4 kg (197 lbs)

Table 3-2. Oil Pump

ITEM

DATA

Type

Gerotor, internal oil pump, wet sump

Pressure

3-6.5 bar (43-94 psi) at 3000 rpm and normal operating temperature of 70° C (158° F)

Filtration

10 micron media between pump & engine

Table 3-3. Water Pump

ITEM

DATA

Type

Impeller type, thermostat controlled bypass

Table 3-4. Valve Diameters

ITEM

MM

IN

Intake

40.0

1.575

Exhaust

34.5

1.358

Table 3-5. Valve Lash

ITEM

MM

IN

Intake

Max

0.245

0.0096

Min

0.195

0.0078

Exhaust

Max

0.345

0.0135

Min

0.295

0.0117

Table 3-6. Cylinder Heads

ITEM

MM

IN

Valve guide in head (tight)

Max 0.051

0.002

Min 0.022

0.0009

Valve seat in head (tight)

Max 0.100

0.0039

Min 0.059

0.002

Head gasket surface (flatness)

0.020

0.0008

Valve-to-guide running clearance - intake

Max 0.0585

0.0023

Min 0.0285

0.0011

Valve-to-guide running clearance - exhaust

Max 0.0685

0.0026

Min 0.0385

0.0015

Valve guide I.D.

Max 6.015

0.2368

Min 6.000

0.2362

Valve stem diameter

Intake

Max 5.9715

0.2351

Min 5.9565

0.2345

Exhaust

Max 5.9615

0.2347

Min 5.9465

0.2341

Valve to guide running clearance

Intake

Max 0.0585

0.0023

Min 0.0285

0.0011

Exhaust

Max 0.0685

0.0027

Min 0.0385

0.0015

Valve seat to cylinder head press

Max 0.0100

0.0004

Min 0.0590

0.0023

Valve seat run-out

Max 0.0050

0.0002

Valve seat to guide run-out

Max 0.0200

0.0008

Valve spring free length

Outer

Max 45.630

1.797

Inner

Max 43.770

.'.. 1.723

Valve spring installed height

Outer

Max 39.000

1.535

Inner

Max 37.000

1.457

Cylinder head flatness

Max 0.0200

0.0008

Table 3-11. Cylinder Heads (continued)

ITEM

KG

LB

Spring force installed

Outer @ 39 mm (1.535 in.) max

Max 20.80

45.86

Min 18.97

41.88

Inner @37 mm (1.457 in.) max

Max 11.31

24.95

Min 10.10

22.26

Maximally compressed (intake and exhaust)

Outer

Max 66.58

146.80

Min 60.87

134.22

Inner

Max 34.15

75.31

Min 31.10

68.57

Table 3-12. Cam Drive

Table 3-14. Piston Ring Gap

Table 3-12. Cam Drive

Chain guide wear

Pittings to be smaller than 16 mm in length, Maximum depth of tensioner show wear 0.8 mm.

Sprocket wear

Visual check, no pittings allowed lateral wear caused by chain is allowed

Table 3-13. Cam Timing

Intake

106 ± 1°

Exhaust

105 ± 1°

Total intake lift

10.9 mm (0.4291 in.)

Duration intake @1 mm

248°

Total exhaust Lift

9.98 mm (0.3929 in.)

Duration exhaust @ 1 mm

206°

Table 3-14. Piston Ring Gap

ITEM

MM

IN

Top ring gap

Max 0.550

0.022

Min 0.350

0.014

2nd ring gap

Max 0.600

0.024

Min 0.400

0.016

Oil control ring gap

Max 0.890

0.035

Min 0.380

0.015

Top ring side clearance

Max 0.075

0.003

Min 0.020

0.001

2nd ring side clearance

Max 0.055

0.002

Min 0.010

0.000

Table 3-15. Connecting Rod/Piston

ITEM

MM

IN

Rod small end bore dia.

Max 22.028

0.8672

Min 22.018

0.8669

Piston pin diameter

Max 22.000

0.8661

Min 21.995

0.8659

Running clearance

Max 0.033

0.0013

Min 0.018

0.0007

Table 3-16. Connecting Rod Journals

Table 3-17. Balance Shaft/Crankcase

Table 3-16. Connecting Rod Journals

ITEM

MM

IN

Rod bearing journal

Red

Max 47.991

1.8894

Min 47.983

1.8891

Blue

Max 47.983

1.8891

Min 47.975

1.8888

Rod bearing bore without bearing

Max 51.616

2.0321

Min 51.600

2.0315

Rod bearing bore with bearing

Red

Max 48.052

1.8918

Min 48.020

1.8906

Blue

Max 48.044

1.8915

Min 48.012

1.890

Running clearance

Max 0.069

0.0027

Min 0.029

0.0011

Axial ground play

Max 0.290

0.0114

Min 0.140

0.0055

ITEM

MM

IN

Balance shaft journal

Max 17.012

0.6698

Min 17.001

0.6693

Press fit inner race to journal

Max -0.020

- 0.0008

Min -0.001

- 0.0000

Crankcase balance shaft bearing bore

Max 39.971

1.5737

Min 39.955

1.5730

Bearing outer race to bearing bore press fit

Max -0.045

-0.0018

Min -0.018

- 0.0007

Table 3-18. Crankcase/Cylinder Liner

ITEM

MM

IN

Cylinder liner cover over stand

Max 0.130

0.0051

Min 0.090

0.0035

Cylinder head deck flatness

Max 0.020

0.0008

Min 0.000

0.0000

Table 3-19. Piston/Cylinder Liner

ITEM

MM

IN

Cylinder liner I.D. out of round installed

Max 0.020

0.0008

Piston major diameter

Class I

Max 99.953

3.9352

Min 99.949

3.9350

Class X

Max 99.961

3.9355

Min 99.953

3.9352

Class II

Max 99.965

3.9365

Min 99.961

3.9355

Running Clearance

Class cylinder liner

Class piston

I

X

Max 0.047

0.0019

Min 0.026

0.0010

II

X

Max 0.060

0.0024

Min 0.039

0.0015

I

I

Max 0.051

0.0020

Min 0.034

0.0013

II

II

Max 0.052

0.0020

Min 0.035

0.0014

Table 3-20. Crankshaft/Crankcase

ITEM

ALTERNATOR SIDE

CLUTCH SIDE

MM

IN

MM

IN

Main bearing journal

Blue

Max 55.977

2.20382

Max 55.952

2.20283

Min 55.971

2.20358

Min 55.946

2.20260

Green

Max 55.984

2.20409

Max 55.959

2.20311

Min 55.977

2.20382

Min 55.952

2.20283

Red

Max 55.990

2.20433

Max 55.965

2.20334

Min 55.984

2.20410

Min 55.959

2.20312

Main bearing bore

Max 61.019

2.40232

Min 61.000

2.40158

Running clearance

Blue

Max 0.059

0.00232

Max 0.059

0.00232

Min 0.026

0.00103

Min 0.026

0.00103

Green

Max 0.061

0.00240

Max 0.061

0.00240

Min 0.027

0.00107

Min 0.027

0.00107

Red

Max 0.062

0.00244

Max 0.062

0.00244

Min 0.029

0.00115

Min 0.029

0.00115

Axial end play

Max 0.060

0.00236

Min 0.050

0.00197

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