Ford 1961 Comet Service Specifications Handbook page 23

ENGINE
CYLINDER HEAD (ConI.)
Valve Seal:
Intake- Width . . . . . . . . . . . . . . . . . . . . . . . ..
.070-.080
Exhaust-Width ........................ .
070-.080
Intake Angle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..
45 °
Exhaust Angle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..
45 °
Runaut T.I.R.-Maximum . . . . . . . . . . . . . . . . . . . . ..
.002
Runaut T.I.R.-Wear limit. ................... .
0025
Head Gasket Surface Finish-R.M.S. . . . . . . . . . . ..
90- 150
Combustion Chamber Volume-CC:
144
C.I.D. Engine . . . . . . . . . . . . . . . . . . . . . ..
43.6-45.6
170
C.I.D. Engine .......................
49.4-51.4
EXHAU~T
VALVES
Valve Stem:
To Guide Clearance {New}
............. .
0018-.0035
Wear limit ............................... .
0055
Diameter:
Standard .......................... .
.3090-.3097
0.003
Oversize . . . . . . . . . . . . . . . . . . . . ..
.3120-.3127
0.015
Oversize ... . .................. .
3240-.3247
0.030
Oversize . . . . . . . . . . . . . . . . . . . . ..
.3390-.3397
Head Diameter . . . . . . . . . . . . . . . . . . . . . . ..
1.261- 1.271
Seat Angle ...............................
45 °
nom.
Exhaust Valve Face Runout T.I.R.:
Maximum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..
.001 5
Exhaust Valve Face Runout T.I.R.:
Wear limit. ........................... . ... .
002
C- 18