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ENGINE
.
57
VALVE GUIDE
SIZE
VALVE GUIDE
BORE IN CYLIN-
DER HEAD
VALVE GUIDE OD,
mm
VALVE
GUIDE ID,
mm
VALVE GUIDE LENGTH,mm
Normal
Ø 10
+ 0.04/ + 0.023
Ø10.0 x 6
+ 0.043/ + 0.034
5.4
45.5
(Inlet/Outlet)
Normal 1
Ø 10.25
+ 0.04/ + 0.023
Ø10.25 x 6
+ 0.051/ + 0.040
5.4
45.5
(Inlet/Outlet)
VALVE SEAT INSERT & BORE DIAMETER IN CYLINDER HEAD
SIZE
VALVE SEAT INSERT BORE
DIA. IN CYLINDER HEAD
VALVE SEAT INSERT OUTSIDE
DIA. (mm)
INLET
NORMAL
30.7H7
30.81 H6
NORMAL 1
30.9 H7
31.01 H6
OUTLET
NORMAL
26.8H7
26.91 H6
NORMAL 1
27H7
27.11 H6