SPECIFICATIONS
Page 1A-6 90-857138R1 MAY 2000
VALVES
Valve/Valve Seat/Valve Guides:
Valve Clearance (cold)
Intake
Exhaust
Valve Dimensions:
“A” Head Diameter
Intake
Exhaust
“B” Face Width
Intake
Exhaust
“C” Seat Width
Intake
Exhaust
“D” Margin Thickness
Intake
Exhaust
Stem Outside Diameter
Intake
Exhaust
Guide Inside Diameter
Intake
Exhaust
Stem To Guide Clearance
Intake
Exhaust
Stem Run-out Limit (max.)
0.002 - 0.005 in. (0.06 - 0.14 mm)
0.004 - 0.007 in. (0.11 - 0.19 mm)
0.980 - 0.988 in. (24.9 - 25.1 mm)
0.941 - 0.949 in. (23.9 - 24.1 mm)
0.102 in. (2.6 mm)
0.102 in. (2.6 mm)
0.031 in. (0.8 mm)
0.031 in. (0.8 mm)
0.028 in. (0.7 mm)
0.047 in. (1.2 mm)
0.216 in. (5.48 mm)
0.214 in. (5.44 mm)
0.2165 in. (5.5 mm)
0.2165 in. (5.5 mm)
0.0008 - 0.0017 in. (0.020 - 0.044 mm)
0.0018 - 0.0028 in. (0.045 - 0.072 mm)
0.0006 in. (0.016 mm)
THERMOSTAT
Valve Opening Temperature
Full Open Temperature
Valve Lift (Minimum)
122°F - 129°F (50°C - 54°C)
145°F - 153°F (63°C - 67°C)
0.12 in. (3 mm)