Cylinder Head/Valve/Camshaft Specifications (After '05); Cylinder/Piston Specifications ('04-'05) - Honda TRX450R Service Manual

GENERAL INFORMATION
CYLINDER HE AD/VALVE/CAMSHAFT SPECIFICATIONS (After '05)
Unit: mm (in)
ITEM
Cylinder compression
Valve clearance
•
TRX450ER
TRX450R
IN
EX
Decompressor clearance
Valve,
valve guide
Valve spring
Exhaust
rocker arm
Camshaft
Valve stem O.D.
Valve guide I.D.
Stem-to-guide
clearance
Valve guide
projection above
cylinder head
Valve seat width
Free length
IN
EX
IN
EX
IN
EX
IN
EX
IN
EX
IN
EX
Arm I.D.
Shaft O.D.
Arm-to-shaft clearance
Cam lobe height IN
EX
Valve lifter O.D.
Valve lifter bore I.D.
Cylinder head warpage
STANDARD
343 - 382 kPa (3.5 - 3.9 kgf/cm
2
, 50 - 56
psi)
961 -1000 kPa (9.8-10.2 kgf/cm
2
,139-
145 psi)
0.16 ±0.03 (0.006 ±0.001)
0.28 ±0.03 (0.011 ±0.001)
Right side exhaust valve clearance +
0.25 ±0.02 mm (0.010 ±0.001 in)
5.475-5.490(0.2156-0.2161)
4.965-4.980(0.1955-0.1961)
5.500-5.512(0.2165-0.2170)
5.000-5.012(0.1969-0.1973)
0.010 - 0.037 (0.0004 - 0.0015)
0.020 - 0.047 (0.0008 - 0.0019)
16.1-16.3(0.63-0.64)
17.9-18.1 (0.70-0.71)
1.1-1.3(0.043-0.051)
1.3-1.5(0.051 -0.059)
40.68 (1.602)
42.82 (1.686)
12.000 - 12.018 (0.4724 - 0.4731)
11.967 - 11.975 (0.4711 - 0.4715)
0.025 - 0.051 (0.0010 - 0.0020)
35.040 - 35.280 (1.3795 - 1.3890)
34.214 - 34.454 (1.3470 - 1.3565)
25.978 - 25.993 (1.0228 - 1.0233)
26.010-26.026 (1.0240-1.0246)
-
SERVICE LIMIT
—
—
-
5.46(0.215)
4.96 (0.195)
5.52 (0.217)
5.052 (0.1989)
0.12 (0.005)
0.13(0.005)
-
—
2.0 (0.08)
2.0 (0.08)
39.7 (1.56)
42.2 (1.66)
12.05(0.474)
11.92 (0.469)
0.10 (0.004)
34.89(1.374)
34.06(1.341)
25.97(1.022)
26.04(1.025)
0.05 (0.002)
CYLINDER/PISTON SPECIFICATIONS ('04 - '05)
Unit: mm (in)
ITEM
Cylinder
Piston,
piston pin,
piston ring
I.D.
Out-of-round
Taper
Warpage
Piston O.D. at 20 (0.8) from bottom
Piston pin hole I.D.
Piston pin O.D.
Piston-to-piston pin clearance
Piston ring end
gap
Piston ring-to-ring
groove clearance
Top
Second
Oil (side rail)
Top
Second
Cylinder-to-piston clearance
Connecting rod small end I.D.
Connecting rod-to-piston pin clearance
STANDARD
94.000 - 94.015 (3.7008 - 3.7014)
-
-
-
93.960 - 93.990 (3.6992 - 3.7004)
21.002 - 21.008 (0.8268 - 0.8271)
20.994 - 21.000 (0.8265 - 0.8268)
0.002 - 0.014 (0.0001 - 0.0006)
0.20-0.35(0.008-0.014)
0.35-0.50(0.014-0.020)
0.20-0.70(0.008-0.028)
0.065 - 0.100 (0.0026 - 0.0039)
0.030 - 0.060 (0.0012 - 0.0024)
0.010 - 0.055 (0.0004 - 0.0022)
21.016 - 21.034 (0.8274 - 0.8281)
0.016 - 0.040 (0.0006 - 0.0016)
SERVICE LIMIT
94.05 (3.703)
0.05 (0.002)
0.05 (0.002)
0.05 (0.002)
93.86 (3.695)
21.03 (0.828)
20.98 (0.826)
0.04 (0.002)
0.50 (0.020)
0.65 (0.026)
0.9 (0.04)
0.115(0.0045)
0.075 (0.0030)
0.19 (0.007)
21.04 (0.828)
0.06 (0.002)
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