Service Data and Specifications (S.D.S.) - Inspection and Adjustment
EM-251spec tableValve head diameter "D" differs by engine variant (GA13DS / GA14DS / GA16DS-GA16DE).
Inspection and Adjustment
ENGINE COMPRESSION PRESSURE
Engine compression pressure - Unit: kPa (bar, kg/cm², psi)/350 rpm
Standard
Value1,324 (13.24, 13.5, 192)
Minimum
Value1,128 (11.28, 11.5, 164)
Difference limit between cylinders
Value98 (0.98, 1.0, 14)
CYLINDER HEAD
Cylinder head - Unit: mm (in)
Head surface flatness
StandardLess than 0.03 (0.0012)
Limit0.1 (0.004)
Height
Standard117.8 - 118.0 (4.638 - 4.646)
Limit—
VALVE
Valve - Unit: mm (in)
Valve head diameter "D"
Intake
GA13DS26.4 - 26.6 (1.039 - 1.047)
GA14DS28.9 - 29.1 (1.138 - 1.146)
GA16DS / GA16DE29.9 - 30.1 (1.177 - 1.185)
Valve head diameter "D"
Exhaust
GA13DS21.4 - 21.6 (0.843 - 0.850)
GA14DS23.9 - 24.1 (0.941 - 0.949)
GA16DS / GA16DE23.9 - 24.1 (0.941 - 0.949)
Valve length "L"
Intake
GA13DS92.00 - 92.5 (3.6220 - 3.6417)
GA14DS92.00 - 92.5 (3.6220 - 3.6417)
GA16DS / GA16DE92.00 - 92.5 (3.6220 - 3.6417)
Valve length "L"
Exhaust
GA13DS92.37 - 92.87 (3.6366 - 3.6563)
GA14DS92.37 - 92.87 (3.6366 - 3.6563)
GA16DS / GA16DE92.37 - 92.87 (3.6366 - 3.6563)
Valve stem diameter "d"
Intake
GA13DS5.465 - 5.480 (0.2152 - 0.2157)
GA14DS5.465 - 5.480 (0.2152 - 0.2157)
GA16DS / GA16DE5.465 - 5.480 (0.2152 - 0.2157)
Valve stem diameter "d"
Exhaust
GA13DS5.445 - 5.460 (0.2144 - 0.2150)
GA14DS5.445 - 5.460 (0.2144 - 0.2150)
GA16DS / GA16DE5.445 - 5.460 (0.2144 - 0.2150)
Valve face angle "α"
GA13DS45°15' - 45°45'
GA14DS45°15' - 45°45'
GA16DS / GA16DE45°15' - 45°45'
Valve margin "T" limit
GA13DS0.9 - 1.1 (0.035 - 0.043)
GA14DS0.9 - 1.1 (0.035 - 0.043)
GA16DS / GA16DE0.9 - 1.1 (0.035 - 0.043)
Valve stem end surface grinding limit
GA13DSLess than 0.2 (0.008)
GA14DSLess than 0.2 (0.008)
GA16DS / GA16DELess than 0.2 (0.008)
Valve clearance
Valve clearance - Unit: mm (in)
Intake
For adjusting - Hot0.32 - 0.40 (0.013 - 0.016)
For adjusting - Cold*0.25 - 0.33 (0.010 - 0.013)
For checking - Hot0.21 - 0.49 (0.008 - 0.019)
Exhaust
For adjusting - Hot0.37 - 0.45 (0.015 - 0.018)
For adjusting - Cold*0.32 - 0.40 (0.013 - 0.016)
For checking - Hot0.30 - 0.58 (0.012 - 0.023)
NOTE
*: At a temperature of approximately 20°C (68°F)
Whenever valve clearances are adjusted to cold specifications, check that the clearances satisfy hot specifications and adjust again if necessary.