Ford Corsar Repair Manual page 72

CYLINDER HEAD
- 1
Inspection (Cont'd)
VALVE DIMENSIONS
Check dimensions in each valve. For dimensions, refer to S.D.S.
When valve head has been worn down to 0.5 mm (0.020 in) in
margin thickness, replace valve.
Grinding allowance for valve stem tip is 0.2 mm (0.008 in) or
less.
VALVE SPRING
Squareness
1.
Measure "S" dimension.
Out-of-square:
Outer
lntake
Less than 2.5 mm (0.098 in)
Exhaust
Less than 2.3 mm (0.091 in)
lnner
lntake
Less than 2.3 mm (0.091 in)
Exhaust
Less than 2.1 mm (0.083 in)
2. If it exceeds the limit, replace spring.
Pressure
Check valve spring pressure.
Pressure: N (kg, Ib) at height mm (in)
Standard
Outer
lntake
604.1 (61.6, 135.8) at 37.6 (1.480)
Exhaust
640.4 (65.3, 144.0) at 34.1 (1.343)
lnner
lntake
284.4 (29.0, 63.9) at 32.6 (1.283)
Exhaust
328.5 (33.5, 73.9) at 29.1 (1.146)
Limit
Outer
lntake
567.8 (57.9, 127.7) at 37.6 (1.480)
Exhaust
620.8 (63.3, 139.6) at 34.1 (1.343)
lnner
lntake
266.8 (27.2, 60.0) at 32.6 (1.283)
Exhaust
318.7 (32.5, 71.7) at 29.1 (1.146)
If it exceeds the limit, replace spring.