Engine Specifications - Yamaha YZF-R1 Kit Manual

1
Engine Specifications
Spec
Displacement
Bore/Stroke
Maximum engine speed
(limiter controlled speed)
Compression ratio
(recommended value)
Valve timing (event angle)
Clearance between valve
and piston (minimum)
Valve (tappet) clearance
SBK/JSB
3
998cm
79.0 × 50.9 mm
14500 rpm
13.0 – 13.4
Depending on
head surface
grinding
INT 105°
EXT 108°
INT 0.95 mm
EXT 1.90 mm
INT 0.09 – 0.17 mm
EXT 0.18 – 0.23 mm
– 1 –
STK STD
3
998cm 998cm
79.0 × 50.9 mm 79.0 × 50.9 mm
14500 rpm 14500 rpm
13.0 13.0
108° 108°
110° 110°
–
–
0.09 – 0.17 mm 0.09 – 0.17 mm
0.18 – 0.23 mm 0.18 – 0.23 mm
3
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