Cylinder Head/Valves Item - Honda XR80R Service Manual

GENERAL INFORMATION
CYLINDER HEAD/VAlVES
,
,e
Un '!'
mm
r )
ITE M STANDARD SERVICE LIMIT
Cylinder XA100R
1127 kPa (11.5 kg/fern'. 164
p~il
at 800 rpm
compression
XA80A
1176 kP" (120kgl{em'. 171 psil at 1.000 rpm
V~\ve. Valve clea ra nce
IN
0.05 (0.002)
valve spring.
EX
0.05 (0.0021
valve guide
Valve spring free I(!ngth
~_r 28.05 (1.104) 27.6 (1.09)
Outer
34.80 (1.370) 33.7 (1.33)
Valve stem 0 .0.
IN
5.450 - 5.465 (0.21 45 - 02151)
5.420
(O . ~.~~
EX
5.'30 -544 5 (0.2137 _ 0.2 143)
5. 400 (0.2126)
Valve guide 1.0.
IN
5.475 - 5.465 (0.2155 _ 0.21 59)
5.5010.217)
EX
5.475 - 5465 (0.2155 _ 0.2159)
5.50 10.217)
Stem \0 guide clearance
IN
0,010 - 0.035 10.0004 - 0.0013) 0.08 (0.003)
EX
0 ,030
0 ,05510.0012 - 0.0022)
0. 10 (0.004)
Valve seat width
1.70 (0.06)
2.1 (0.081
Rocker
arml
Rocker arm ).0.
10.000 10.015 (0.3937 - 0.3943) 10.1 (0.40)
Shaft
Rocker arm sha ft 0.0. 9.978 - 9.987 (O.3928 - 0.3932)
9.91 (0.390)
Rocker arm to shafl clea rance
0.0 13 - 0.037 W.OOOS - 0.0014) 0,08 10.003)
- -
Camshaft Cam lobe
XR100R 'N
27,860 - 28.040 11,0968 - 1,1039) 27 ,80 ( 1.095)
height
EX
27.776 - 27.950 (1,0935 - 1,1004)
27,70 ( 1.095)
XR80 A
'N
28.017 - 28.197 (1,1030 - 1. 11 02) 27.95(1 .100)
EX 27.835 - 28.015 (1.0959 - 1. 1102) 27.75( 1.093)
Journal
XR100R
Rrght 19.950 - 19,968 (0.7854 - 0.786 11 19.90 (O.783)
0 .0 ,
L, ft
19.950 19.968 (0.785 4 - 0.786 11 19.90 10.783)
XR80R
Right 19.950 - 19.968 (0.7854 - 0.786 11 19.90 (0.783)
L,ft
19.950 - 19.968 (0.7854 - 0.78611 19.90 (0.7831
Cylinder head war pago
0. 10 (0.00 4)
Camshaft holder 1.0
XR100R
20,008 - 20.063 (0.7877 - 0.7899) 20.15 (0.793)
XR80R
20.008 - 20.063 (0.7877 - 0.76991 20. 15 (0.793)
Oil c learance
XR 100A
0.040 -
0. 113
W.0016 -
0.00 44 ) 0.20 (0.008)
XR80R
0.040 - 0.1 13 (0.0016 - 00044 )
0.20 (0.0081
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