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Racing Kit Service Data
Item Standard
Cylinder Head, Valves:
Duration:
Intake 288°
Exhaust 266°
Camshaft timing (cam lift center):
Intake 105° (ATDC)
Exhaust 110° (BTDC)
Valve clearance:
Intake 0.16 mm
Exhaust 0.28 mm
Valve to piston clearance:
Intake 0.80 mm (Minimum) @12°ATDC
Exhaust 1.40 mm (Minimum) @11°BTDC
Ignition System:
Spark plugs
NGK R0045Q-10, R0373A-10
Spark plug tightening torque 13 N·m (1.3 kgf·m, 113 in·lb)
These values show the specifications when standard cylinder head and gasket are used.
When the clearance between the valve and the piston head is smaller than the minimum
specific values, turn the installed position of the camshaft sprocket on the camshaft and
change the camshaft timing.
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