Yamaha R1 Series 2015, Service Manual

Page: 78 / 704

ENGINE SPECIFICATIONS
2-3
Coolant reservoir (up to the maximum level
mark)
0.25 L (0.26 US qt, 0.22 Imp.qt)
Radiator cap opening pressure 107.9–137.3 kPa (1.08–1.37 kgf/cm², 15.6–19.9
psi)
Thermostat
Valve opening temperature 71.0
q
C (159.80
q
F)
Valve full open temperature 85.0
q
C (185.00
q
F)
Valve lift (full open) 8.0 mm (0.31 in)
Radiator core
Width 383.0 mm (15.08 in)
Height 235.2 mm (9.26 in)
Depth 22.0 mm (0.87 in)
Water pump
Water pump type Single suction centrifugal pump
Reduction ratio 67/41
u
33/28 (1.926)
Impeller shaft tilt limit 0.15 mm (0.006 in)
Spark plug(s)
Manufacturer/model NGK/LMAR9E-J
Spark plug gap 0.6–0.7 mm (0.024–0.028 in)
Cylinder head
Combustion chamber volume 14.90–15.30 cm³ (0.91–0.93 cu.in)
Warpage limit 0.10 mm (0.0039 in)
Camshaft
Drive system Chain drive (right)
Camshaft cap inside diameter 25.500–25.521 mm (1.0039–1.0048 in)
Camshaft journal diameter 25.459–25.472 mm (1.0023–1.0028 in)
Camshaft-journal-to-camshaft-cap clearance 0.028–0.062 mm (0.0011–0.0024 in)
Camshaft lobe dimensions
Lobe height (Intake) 35.210–35.310 mm (1.3862–1.3902 in)
Limit 35.160 mm (1.3842 in)
Base circle diameter (Intake) 28.150–28.250 mm (1.1083–1.1122 in)
Limit 28.100 mm (1.1063 in)
Lobe height (Exhaust) 34.220–35.220 mm (1.3472–1.3866 in)
Limit 34.170 mm (1.3453 in)
Base circle diameter (Exhaust) 28.090–28.190 mm (1.1059–1.1098 in)
Limit 28.040 mm (1.1039 in)
Camshaft runout limit 0.050 mm (0.0020 in)
Rocker arm/rocker arm shaft
Rocker arm inside diameter 7.987–8.002 mm (0.3144–0.3150 in)
Limit 8.017 mm (0.3156 in)
Rocker arm shaft outside diameter 7.967–7.979 mm (0.3137–0.3141 in)
Limit 7.936 mm (0.3124 in)
Rocker-arm-to-rocker-arm-shaft clearance 0.008–0.035 mm (0.0003–0.0014 in)
Limit 0.080 mm (0.0032 in)
Valve, valve seat, valve guide
Valve clearance (cold)
Intake 0.09–0.17 mm (0.0035–0.0067 in)
Exhaust 0.18–0.23 mm (0.0071–0.0091 in)
Valve dimensions
Valve head diameter (intake) 32.90–33.10 mm (1.2953–1.3031 in)