Motorcycle BMW R1150RT. Manual - part 17

11.3

Contents

Page

Installing cylinder 

..........................................................................................................................57

Installing cylinder head 

...............................................................................................................58

Adjusting valve clearances 

.......................................................................................................59

Installing cylinder head, right 

...................................................................................................60

Adjustment specification  ...................................................................................................................60

Installing left cylinder head 

.......................................................................................................61

Adjustment specification  ...................................................................................................................61

Installing alternator mount cover 

............................................................................................63

Installing magnetic gate/belt pulley 

......................................................................................63

Timing the ignition  .............................................................................................................................64

Installing alternator 

.......................................................................................................................65

Poly-V belt adjusting procedure .........................................................................................................66

Installing engine 

.............................................................................................................................67

11.4

11.5

11

Technical Data 11 Engine

R 1150 RT

Engine, general

Type

Four-stroke opposed twin, air-cooled with oil-
cooled exhaust ports, installed longitudinally, 
4 valves per cylinder, two overhead camshafts, 
electronic fuel injection.

Location of engine number

Crankcase

Cylinder bore

mm (in) 101 (3.9764)

Stroke

mm (in) 70.5 (2.77)

Effective displacement

cc 1,130

Compression ratio

11.3:1

Power rating

kW/bhp 70/95

at

rpm 7,250

Max. torque

Nm 100

at

rpm 5,500

Maximum permissible engine speed

rpm 7,900

Idle speed

rpm 1,100

+/-50

Direction of rotation

Clockwise, looking at ignition system

Compression test pressure

good

bar (psi) above

10 (145)

normal

bar (psi)

8.5...10 (121...142)

poor

bar (psi) below

8.5 (121)

Lubrication system

Type

Wet sump lubrication

Oil capacity

without filter change

l

(Imp. pints/

US quarts)

3.50 (6.16/3.70)

With filter change

l

(Imp. pints/

US quarts)

3.75 (6.60/3.96)

min/max

l

(Imp. pints/

US quarts)

0.5 (0.88/0.53)

Oil filter

Filter cartridge

Oil pressure warning light comes on below

bar (psi) 0.3 (4.35)

Pressure-relief valve opens at

bar (psi) 5.5 (79.77)

Operating pressure

bar (psi) 3.5...6.0 (50.76...87.02)

Max. oil consumption

l/1,000 km

(Imp. miles/

gal/mpg)

1.0 (2825/2352)

BMW recommends Castrol

11.6

Oil pump

Oil pump

2 duocentric pumps

Housing depth

Cooling oil

mm (in) 11.02...11.05 (0.4339...0.4350)

Lubricating oil

mm (in) 10.02...10.05 (0.3945...0.3957)

Height of rotor

Cooling oil

mm (in) 10.965...10.98 (0.4317...0.4323)

Lubricating oil

mm (in)

9.965...9.98 (0.3923...0.3929)

End float

mm (in) 0.04...0.085 (0.0016...0.0033)

Wear limit

mm (in) 0.25 (0.0098)

Valves

Valve clearances with engine cold (max. 
35 °C/95 °F)

Inlet valve

mm (in) 0.15 (0.0059)

Exhaust valve

mm (in) 0.30 (0.0118)

Included angle between valves

Inlet valve angle

° 19

Exhaust valve angle

° 22

Valve timing

without valve clearance, 3 mm (0.1181 in) valve lift

Inlet opens

° 5 after TDC

Inlet closes

° 33 after BDC

Exhaust opens

° 27 before BDC

Exhaust closes

° 5 before TDC

Tolerance

°

 ± 3

Valve head dia.

Inlet

mm (in) 34 (1.3386)

Exhaust

mm (in) 29 (1.1417)

Stem dia.

Inlet

mm (in) 4.966...4.980 (0.1955...0.1960)

Wear limit

mm (in) 4.946 (0.1947)

Exhaust

mm (in) 4.956...4.970 (0.1951...0.1956)

Wear limit

mm (in) 4.936 (0.1943)

Valve head edge thickness

Inlet

mm (in) 1.00 

±0.2

 (0.039 

±0.008

)

Wear limit

mm (in) 0.5 (0.0197)

Exhaust

mm (in) 0.9 

± 0.2

 (0.0354 

± 0.0079

)

Wear limit

mm (in) 0.5 (0.0197)

Max. runout of valve head at valve seat

Inlet, exhaust

mm (in) 0.035 (0.0014)

Technical Data 11 Engine

R 1150 RT