Valve, Intake/Exhaust
VALVESValve length
Intake 103.0 mm (4.055 in.)
Exhaust 102.7 mm (4.043 in.)
Stem O.D.
Intake 7.960-7.975 mm (.3134-.3140 in.)
Exhaust 7.930-7.950 mm (.3122-.3130 in.)
Face angle 45° - 45.5°
Thickness of valve head (Margin)
Intake 1.2 mm (.047 in.)
Limit 0.7 mm (.028 in.)
Exhaust 2.0 mm (.079 in.)
Limit 1.5 mm (.059 in.)
Valve stem to valve guide clearance
Intake 0.03-0.06 mm (.0012-.0024 in.)
Limit 0.10 mm (.0039 in.)
Exhaust 0.05-0.09 mm (.0020-.0035 in.)
Limit 0.15 mm (.0059 in.)
Valve guide length:
Intake 44 mm (1.73 in.)
Exhaust 48 mm (1.89 in.)
Service sizes:
0.05 mm (.002 in.) Oversize
0.25 mm (.010 in.) Oversize
0.50 mm (.020 in.) Oversize
Valve seat
Width of seat contact 0.9 - 1.3 mm (.035 - .051 in.)
Seat angle 44° - 44.5°
Valve spring
Free length 50.5 mm (1.988 in.)
Limit 49.5 mm (1.949 in.)
Load 329 N (74 lbs.) at installed height
installed height 40.4 mm (1.591 in.)
Limit 41.4 mm (1.630 in.)
Out of squareness Less than 2°
Limit 4°