Yamaha YZF-R1K Service Manual page 32

Item
Cylinders
Cylinder arrangement
Bore × stroke
Compression ratio
Bore
Max. taper
Max. out-of-round
Pistons
Piston-to-cylinder clearance
Diameter D
D
Height H
Piston pin bore (in the piston)
Diameter
Offset
Offset direction
Piston pins
Outside diameter
Piston-pin-to-piston-pin-bore
clearance
Piston rings
Top ring
Ring type
Dimensions (B × T)
End gap (installed)
Ring side clearance
ENGINE SPECIFICATIONS
Forward-inclined, parallel 4-cylinder
74 × 58 mm (2.91 × 2.28 in)
11.8:1
74.00 ~ 74.010 mm (2.9134 ~ 2.9138 in)
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0.03 ~ 0.055 mm (0.001 ~ 0.002 in)
73.955 ~ 73.970 mm
(2.9118 ~ 2.9122 in)
H
5 mm (0.20 in)
17.002 ~ 17.013 mm
(0.6694 ~ 0.6698 in)
0.5 mm (0.020 in)
Intake side
16.991 ~ 17.000 mm
(0.6689 ~ 0.6693 in)
0.002 ~ 0.022 mm
(0.00008 ~ 0.00087 in)
B
T
Barrel
0.90 × 2.75 mm (0.035 × 0.108 in)
0.19 ~ 0.31 mm (0.0007 ~ 0.012 in)
0.030 ~ 0.065 mm (0.0012 ~ 0.0026 in)
2 - 7
SPEC
Standard Limit
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0.05 mm
(0.0016 in)
0.05 mm
(0.0016 in)
2
0.12 mm
(0.005 in)
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0.072 mm
(0.0028 in)
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