Ford Corsar Repair Manual page 112

Measuring points
Warpage of surface:
L- than 0.1 mm (0.004 in)
SEM595A
CYLINDER HEAD --Inspection-
CYLINDER HEAD DISTORTION
Cylinder head distortion:
Less than 0.1 mm (0.004 in)
If beyond the specified limit, resurface it.
Nominal cylinder head height:
116.6
-
117.0 mm (4.591
-
4.606 in)
Resurfacing limit:
The resurfacing limit of cylinder head is determined by the
cylinder block resurfacing in an engine.
Amount of cylinder head resurfacing is "A"
Amount of cylinder block resurfacing i s "B"
The maximum limit i s as follows:
A
+
B
=
0.2 mm (0.008 in)
After resurfacing the cylinder head, check that.camshaft rotates
freely by hand. If resistance i s felt, the cylinder head must be
replaced.
VALVE GUIDE CLEARANCE
Valve guide clearance should be measured parallel with
rocker arm. (Generally, a large amount of wear occurs in
this direction.)
Stem to guide clearance:
Maximum limit
0.10 mm (0.0039 in)
Maximum allowable deflection
(Dial indicator reading)
0.2 mm (0.008 in)
To determine the correct replacement part, measure valve
stem diameter and valve guide bore.
For dimensions, refer to S.D.S.