Technical Data | R 1150 GS |
Engine, general | |
Engine design | Four-stroke flat 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 (3.97) |
Stroke, mm (in) | 70.5 (2.78) |
Effective displacement, cc | 1,130 |
Compression ratio | 10.3 : 1 |
Power output, kW/(bhp)/rpm | 62.5/(85)/6,750 |
Max. torque, Nm/rpm | 98/5,250 |
Permissible maximum 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 (142) |
- normal, bar (psi) | 8.5 ... 10 (121 ... 142) |
- poor, bar (psi) | below 8.5 (121) |
Intake port dia./cylinder head, mm (in) | 44 (1.7) |
Lubrication system | |
Theoretical volume in circulation at 6,000 rpm | |
- Lubricating oil, l (Imp.gal/ US gal) | 30 (6.6/7.9) |
- Cooling oil, l (Imp.gal/ US gal) | 33 (7.3/8.7) |
Oil filter | Full-flow type |
Pressure differential needed to open bypass valve bar (psi) | 1.5 (21.3) |
Oil pressure warning light comes on below, bar (psi) | 0.3 (4.2) |
Pressure relief valve opens at, bar (psi) | 5.5 (78.3) |
Operating pressure, bar (psi) | 3.5 ... 6.0 (49.8 ... 85.4) |
Oil content without filter change, l (Imp.pint/ US quart) | 3.50 (6.16/3.70) |
with filter change, l (Imp.pint/US quart) | 3.75 (6.60/3.96) |
min/max, l (Imp.pint/ US quart) | 0.5 (0.88/0.53) |
Permissible oil consumption I/1,000 km (miles per Imp.pint/miles per US quart) | 1.0 (350/390) |
Oil pump | |
Oil capacity | 2 Duocentric pumps |
Housing depth: | |
- Cooling oil, mm (in) | 11.02 ... 11.05 (0.434 ... 0.435) |
- Lube oil, mm (in) | 10.02 ... 10.05 (0.394 ... 0.396) |
Height of rotor: | |
- Cooling oil, mm (in) | 10.965 ... 10.98 (0.431 ... 0.432) |
- Lube oil, mm (in) | 9.965 ... 9.98 (0.392 ... 0.393) |
Axial play, mm (in) | 0.04 ... 0.085 (0.002 ... 0.003) |
- Wear limit, mm (in) | 0.25 (0.010) |
Valves | |
Included angle between valves° | 41 |
Valve clearances with engine cold (max. 35°C/95°F) | |
- Inlet valve, mm (in) | 0.15 (0.006) |
- Exhaust valve, mm (in) | 0.30 (0.012) |
Valve timing | without valve clearance, 3 mm (0.12 in) valve lift |
- Inlet opens° | 1 after TDC |
- Inlet closes° | 25 after BDC |
- Exhaust opens° | 31 before BDC |
- Exhaust closes° | 13 before TDC |
° | Tolerance±3 |
Valve head dia. | |
- Inlet, mm (in) | 34 (1.34) |
- Exhaust, mm (in) | 29 (1.14) |
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 (0.04±0.008) |
- Wear limit, mm (in) | 0.5 (0.02) |
- Exhaust, mm (in) | 0.9±0.2 (0.003±0.008) |
- Wear limit, mm (in) | 0.5 (0.02) |
Max. runout of valve head at valve seat Inlet, exhaust, mm (in) | 0.035 (0.0014) |
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 (0.10) |
- Exhaust, mm (in) | 1.4±0.15 (0.055±0.006) |
- Wear limit, mm (in) | 3.0 (0.12) |
Valve seat extl. dia. (dimension for machining seat) | |
- Inlet, mm (in) | 33.4±0.1 (1.32±0.004) |
- Exhaust, mm (in) | 28.4±0.1 (1.12±0.004) |
Seat ring dia. (oversize +0.2 mm/+0.008 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/+0.008 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, Extl. 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 (0.0006 ... 0.0017) |
Repair stages | |
Replacement valve guide Extl. dia., mm (in) | 12.550 ... 12.561 (0.4941 ... 0.4945) |
Oversize valve guide, Extl. dia., mm (in) | 12.733 ... 12.744 (0.5013 ... 0.5017) |
Valve guide, Intl. 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 (0.006) |
- Exhaust, mm (in) | 0.030 ... 0.056 (0.0012 ... 0.0022) |
- Wear limit, mm (in) | 0.17 (0.007) |
Valve spring | |
Spring length, off-load, mm (in) | 41.1 (1.62) |
Wear limit, mm (in) | 39.0 (1.54) |
Rocker | |
Bore, 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 (0.004) |
Axial play min., mm (in) | 0.05 (0.002) |
- max., mm (in) | 0.40 (0.016) |
Camshaft | |
Opening angle, inlet/exhaust cams° | 284/284 |
Cam spread, inlet/exhaust° | 103/112 |
Markings | Mark in position 3 |
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Inlet valve lift, mm (in) | 8.50 (0.33) (valve clearance = 0) |
Exhaust valve lift, mm (in) | 8.19 (0.32) (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 (0.006) |
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) |
Axial play, mm (in) | 0.05 ... 0.13 (0.0031 ... 0.0051) |
Wear limit, mm (in) | 0.25 (0.010) |
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 | |
Bore in crankcase | |
- 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) |
Crankshaft | |
Marking of main bearing and crankpin on front crank web | |
- no paint mark | Grinding stage 0 |
- paint mark | Grinding stage 1 (-0.25 mm/-0.010 in) |
Grinding stage 0 (grinding stage 1 = —0.25 mm/-0.01 in) | |
Guide bearing bore, 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, 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) |
Width of main bearing journal, mm (in) | 25.065 ... 25.098 (0.9868 ... 0.9881) |
Axial play, mm (in) | 0.125 ... 0.208 (0.0049 ... 0.0082) |
- Wear limit, mm (in) | 0.2 (0.0079) |
Grinding stage 0 (grinding stage 1 = –0.25 mm/-0.01 in) | |
Crankpin dia., mm (in) | 47.975 ... 47.991 (1.8888 ... 1.8894) |
Width of crankpin, mm (in) | 22.065 ... 22.195 (0.8687 ... 0.8738) |
Connecting rod | |
Big-end bore, 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 (0.010 ... 0.0030) |
- Wear limit, mm (in) | 0.13 (0.005) |
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 (0.02) |
Small-end bore, 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 (0.002) |
Distance between centers, mm (in) | 125 (4.92) |
Max. deviation from parallel of conrod bores | |
at distance of 150 mm (5.90 in), mm (in) | 0.02 (0.00079) |
Weight classes | |
Class 0 (2 spots, white), grammes (oz). | 520.0 ... 525.9 (18.356 ... 18.565) |
- 1 (2 spots, blue), grammes (oz). | 526.0 ... 531.9 (18.568 ... 18.776) |
- 2 (3 spots, white), grammes (oz). | 532.0 ... 537.9 (18.78 ... 18.988) |
- 3 (3 spots, yellow), grammes (oz). | 538.0 ... 543.9 (18.992 ... 19.20) |
- 4 (1 spot, blue), grammes (oz). | 544.0 ... 549.9 (19.201 ... 19.412) |
Cylinders | |
Bore | (20 mm/0.79 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 (0.005) |
Permitted out-of-roundness of cylinder bore | |
- at 20 mm (0.7874 in) from the top edge, mm (in) | 0.03 (0.0012) |
- at 100 mm (3.9370 in) from the top edge, mm (in) | 0.04 (0.0016) |
Pistons | |
Piston dia. | (Measuring plane A - see Checking pistons and cylinders) |
- A, mm (in) | 100.971 ... 100.983 (3.9753 ... 3.9758) |
- Wear limit, mm (in) | 100.895 (3.9723) |
- B, mm (in) | 100.983 ... 100.995 (3.9757 ... 3.9763) |
- Wear limit, mm (in) | 100.905 (3.9727) |
- AB, mm (in) | 100.979 ... 100.987 (3.9756 ... 3.9759) |
- Wear limit, mm (in) | 100.900 (3.9725) |
Installed clearance, mm (in) | 0.005 ... 0.029 (0.0002 ... 0.0011) |
Total wear clearance of piston and cylinder, mm (in) | 0.12 (0.005) |
Piston pin bore, mm (in) | 22.005 ... 22.011 (0.8664 ... 0.8666) |
Weight classes | + and — |
Weight difference in one class, grammes (oz). | 10 (0.353) (complete with pins and rings) |
Direction of installation | Arrow on piston crown pointing to exhaust side Production locating point towards exhaust side (see Installing piston) |
Piston rings | |
1st groove. Piston ring asymmetric, convex oval | |
- Height, mm (in) | 1.170 ... 1.190 (0.0461 ... 0.0469) |
- Wear limit, mm (in) | 1.1 (0.04) |
Ring gap, mm (in) | 0.1 ... 0.3 (0.004 ... 0.012) |
- Wear limit, mm (in) | 0.8 (0.03) |
Ring float, mm (in) | 0.030 ... 0.070 (0.0012 ... 0.0027) |
- Wear limit, mm (in) | 0.15 (0.006) |
2nd groove. Micro-taper compression ring | |
- Height, mm (in) | 1.170 ... 1.190 (0.0461 ... 0.0469) |
- Wear limit, mm (in) | 1.1 (0.04) |
Ring gap, mm (in) | 0.2 ... 0.4 (0.0078 ... 0.0158) |
- Wear limit, mm (in) | 0.8 (0.03) |
Ring float, mm (in) | 0.030 ... 0.07 (0.0012 ... 0.0027) |
- Wear limit, mm (in) | 0.15 (0.0006) |
3rd groove. Coiled-spring ring | |
- Height, mm (in) | 1.97 ... 1.99 (0.0776 ... 0.0783) |
- Wear limit, mm (in) | 1.9 (0.075) |
Ring gap, mm (in) | 0.30 ... 0.55 (0.012 ... 0.02166) |
- Wear limit, mm (in) | 1.20 (0.047) |
Ring float, mm (in) | 0.020 ... 0.060 (0.0008 ... 0.0024) |
- Wear limit, mm (in) | 0.15 (0.006) |
Installed direction of piston rings | Top marking uppermost |
Piston pins | |
Piston pin dia., mm (in) | 21.995 ... 22.000 (0.8664 ... 0.8662) |
- Wear limit, mm (in) | 21.960 (0.8646) |
Bore in piston, mm (in) | 22.005 ... 22.011 (0.8664 ... 0.8666) |
Radial clearance in piston, mm (in) | 0.005 ... 0.016 (0.0002 ... 0.0006) |
- Wear limit, mm (in) | 0.070 (0.0028) |