Motorcycle BMW R1150RT. Manual - part 18

11.7

Valve seat ring

Valve seat angle

Inlet

° 45

Exhaust

° 45

Valve seat width

Inlet

mm (in) 1.1 

±0.15

 (0.043 

±0.006

)

Wear limit

mm (in) 2.5 (0.0984)

Exhaust

mm (in) 1.4

 ± 0.15

 (0.0551 

± 0.0059

)

Wear limit

mm (in) 3.0 (0.1181)

Valve seat extl. dia. (dimension for machin-
ing seat)

Inlet

mm (in) 33.4 

±0.1

 (1.315 

±0.004

)

Exhaust

mm (in) 28.4 

±0.1

 (1.118 

±0.004

)

Seat ring dia. (oversize +0.2 mm/+0.0079 in)

Inlet

mm (in) 36.617...36.633 (1.4416...1.4422)

Exhaust

mm (in) 32.134...32.150 (1.2651...1.2658)

Seat dia. in cylinder head (oversize 
+0.2 mm/+0.0079 in)

Inlet

mm (in) 36.500...36.525 (1.4370...1.4380)

Exhaust

mm (in) 32.000...32.025 (1.2599...1.2608)

Valve guide

Valve guide, outside dia.

mm (in) 12.533...12.544 (0.4934...0.4939)

Bore in cylinder head

mm (in) 12.500...12.518 (0.4921...0.4928)

Overlap

mm (in) 0.015...0.044 (0.0059...0.0017)

Repair stages

Replacement valve guide, outside dia.

mm (in) 12.550...12.561 (0.4941...0.4945)

Oversize valve guide, outside dia.

mm (in) 12.733...12.744 (0.5013...0.5017)

Valve guide inside dia.

mm (in) 5.0...5.012 (0.1969...0.1973)

Radial clearance

Inlet

mm (in) 0.020...0.046 (0.0008...0.0018)

Wear limit

mm (in) 0.15 (0.0059)

Exhaust

mm (in) 0.030...0.056 (0.0012...0.0022)

Wear limit

mm (in) 0.17 (0.0067)

Valve spring

Spring length, off-load

mm (in) 41.1 (1.6181)

Wear limit

mm (in) 39.0 (1.5354)

Technical Data 11 Engine

R 1150 RT

11.8

Rocker arm

Bore dia.

mm (in) 16.016...16.034 (0.6306...0.6312)

Rocker shaft dia.

mm (in) 15.973...15.984 (0.6289...0.6293)

Radial clearance

mm (in) 0.032...0.061 (0.0016...0.0024)

Wear limit

mm (in) 0.1 (0.0039)

End float

min.

mm (in) 0.05 (0.0019)

max.

mm (in) 0.40 (0.0157)

Camshaft

Opening angle, inlet/exhaust cams

° 300/300

Cam spread, inlet/exhaust

° 109/106

Marking

Mark in 
position 4

Inlet valve lift

mm (in) 9.70 (0.3819) (valve clearance = 0)

Exhaust valve lift

mm (in) 9.30 (0.3661) (valve clearance = 0)

Camshaft bearing bore

mm (in) 21.02...21.04 (0.8276...0.8284)

Camshaft dia.

mm (in) 20.97...21.00 (0.8256...0.8268)

Radial clearance

mm (in) 0.02...0.07 (0.0008...0.0028)

Wear limit

mm (in) 0.15 (0.0059)

Width of guide bearing

mm (in) 15.92...15.95 (0.6268...0.6280)

Width of camshaft bearing

mm (in) 16.0...16.05 (0.6299...0.6319)

End float

mm (in) 0.05 ... 0.13 (0.0031...0.0051)

Wear limit

mm (in) 0.25 (0.0098)

Bucket-type tappet

Extl. dia.

mm (in) 23.947...23.960 (0.9428...0.9433)

Bore dia. in cylinder head

mm (in) 24.000...24.021 (0.9449...0.9457)

Radial clearance

mm (in) 0.040...0.074 (0.0016...0.0029)

Wear limit

mm (in) 0.18 (0.0070)

Auxiliary shaft

Crankcase bore dia.
front/rear

mm (in) 25.020...25.041 (0.9851...0.9859)

Auxiliary shaft dia.
front/rear

mm (in) 24.959...24.980 (0.9827...0.9835)

Radial clearance

mm (in) 0.040...0.082 (0.0016...0.0032)

Wear limit

mm (in) 0.17 (0.0066)

Technical Data 11 Engine

R 1150 RT

11.9

Crankshaft

Marking of main bearing and crankpin on front crank 
web

no paint mark

Undersize 0

paint mark

Undersize 1 (-0.25 mm/-0.0098 in)

Undersize 0 (Undersize 1 = —0.25 mm/–
0.0098 in)

Guide bearing bore dia.

mm (in) 64.949...64.969 (2.5571...2.5579)

Guide bearing dia.

mm (in) Green: 59.965...59.999 (2.3608...2.3621)

mm (in) Yellow: 59.979...60.013 (2.3614...2.3628)

Main bearing journal dia.

mm (in) Green: 59.939...59.948 (2.3598...2.3602)

mm (in) Yellow: 59.949...59.958 (2.3602...2.3606)

Radial clearance

mm (in) 0.017...0.060 (0.0007...0.0023)

Wear limit

mm (in) 0.1 (0.0039)

Main bearing bore dia.

mm (in) 60.010...60.029 (2.3626...2.3633)

Main bearing dia.

mm (in) Green: 55.000...55.039 (2.1654...2.1669)

mm (in) Yellow: 55.008...55.047 (2.1657...2.1672)

Main bearing journal dia.

mm (in) Green: 54.971...54.980 (2.1643...2.1646)

mm (in) Yellow: 54.981...54.990 (2.1646...2.1650)

Radial clearance

mm (in) 0.018...0.066 (0.0007...0.0026)

Wear limit

mm (in) 0.13 (0.0051)

Width of guide bearing

mm (in) 24.890...24.940 (0.9799...0.9819)

Bearing width of main bearing journal

mm (in) 25.065...25.098 (0.9868...0.9881)

End float

mm (in) 0.125...0.208 (0.0049...0.0082)

Wear limit

mm (in) 0.2 (0.0079)

Undersize 0 (undersize 
1 = –0.25 mm/–0.0098 in)

Crankpin dia.

mm (in) 47.975...47.991 (1.8888...1.8894)

Bearing width of crankpin

mm (in) 22.065...22.195 (0.8687...0.8738)

Technical Data 11 Engine

R 1150 RT

11.10

Connecting rod

Bore dia. for big end bearing

mm (in) 51.000...51.013 (2.0079...2.0084)

Big end bearing dia.

mm (in) 48.016...48.050 (1.8904...1.8918)

Radial clearance

mm (in) 0.025...0.075 (0.0010...0.0030)

Wear limit

mm (in) 0.13 (0.0051)

Width of big end bearing eye

mm (in) 21.883...21.935 (0.8616...0.8636)

Conrod end float

mm (in) 0.130...0.312 (0.0051...0.0123)

Wear limit

mm (in) 0.5 (0.0197)

Small end bearing bore dia.

mm (in) 22.015...22.025 (0.8664...0.8671)

Radial clearance

mm (in) 0.015...0.030 (0.0006...0.0012)

Wear limit

mm (in) 0.06 (0.0024)

Distance between centers

mm (in) 125 (4.9212)

Max. deviation from parallel of conrod bores 
at 150 mm (5.9055 in) spacing

mm (in) 0.02 (0.0008)

Weight classes

Class

0 (2 spots, white)

g (oz.) 520.0...525.9 (18.356...18.565)

1 (2 spots, blue)

g (oz.) 526.0...531.9 (18.568...18.776)

2 (3 spots, white)

g (oz.) 532.0...537.9 (18.780...18.988)

3 (3 spots, yellow)

g (oz.) 538.0...543.9 (18.992...19.200)

4 (1 spot, blue)

g (oz.) 544.0...549.9 (19.201...19.412)

Cylinders

Bore dia.

(20 mm/0.7874 in) from top edge)

A

mm (in) 100.992...101.000 (3.9761...3.9764)

Wear limit

mm (in) 101.050 (3.9784)

B

mm (in) 101.000...101.008 (3.9764...3.9768)

Wear limit

mm (in) 101.058 (3.9787)

Total wear clearance of piston and cylinder

mm (in) 0.12 (0.0047)

Permitted out-of-roundness of cylinder bore

at 20 mm (0.7874 in) from the top edge

mm (in) 0.03 (0.0012)

100 mm (3.9370 in) from the bottom edge

mm (in) 0.04 (0.0016)

Technical Data 11 Engine

R 1150 RT