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Home >> Honda >> 2021 >> Civic Type R >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine Service Specifications (Type-R/Si) >> Cylinder Head (K20C1: Type-R)
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Cylinder Head (K20C1: Type-R)

Item  Measurement  Qualification  Standard or New  Service Limit 
Head Warpage   0.05 mm (0.002 in) max. -
Height   111.95-112.05 mm (4.4075-4.4114 in) -
Item  Measurement  Qualification  Standard or New  Service Limit 
Camshaft End play Intake/Exhaust 0.05-0.20 mm (0.0020-0.0079 in) 0.40 mm (0.0157 in)
Camshaft-to-holder oil clearance (intake) No. 1 journal 0.030-0.069 mm (0.00118-0.00272 in) 0.150 mm (0.00591 in)
No. 2, 3, 4, 5 journals 0.060-0.099 mm (0.00236-0.00390 in) 0.150 mm (0.00591 in)
Camshaft-to-holder oil clearance (exhaust) No. 1, 2 journals 0.030-0.069 mm (0.00118-0.00272 in) 0.150 mm (0.00591 in)
No. 3, 4, 5, 6 journals 0.060-0.099 mm (0.00236-0.00390 in) 0.150 mm (0.00591 in)
Total runout   0.03 mm (0.0012 in) max. -
Cam lobe height Intake 34.172 mm (1.34535 in) -
Exhaust PRI 33.633 mm (1.32413 in) -
Exhaust MID 34.519 mm (1.35901 in) -
Exhaust SEC 33.633 mm (1.32413 in) -
Valve Clearance (cold) Intake 0.21-0.25 mm (0.009 in) -
Exhaust 0.25-0.29 mm (0.010-0.011 in) -
Stem O.D. Intake 5.475-5.490 mm (0.21555-0.21614 in) 5.455 mm (0.21476 in)
Exhaust 5.465-5.475 mm (0.21516-0.21555 in) 5.440 mm (0.21417 in)
Stem-to-guide clearance Intake 0.025-0.055 mm (0.00098-0.00217 in) 0.080 mm (0.00315 in)
Exhaust 0.040-0.065 mm (0.00157-0.00256 in) 0.080 mm (0.00315 in)
Valve seat Width Intake 1.25-1.55 mm (0.0492-0.0610 in) 1.90 mm (0.0748 in)
Exhaust 1.45-1.75 mm (0.0571-0.0689 in) 2.22 mm (0.0874 in)
Stem installed height Intake 52.75-53.65 mm (2.0768-2.1122 in) 53.75 mm (2.1161 in)
Exhaust 50.40-51.30 mm (1.9842-2.0197 in) 51.40 mm (2.0236 in)
Valve guide Installed height Intake 21.2-22.2 mm (0.835-0.874 in) -
Exhaust 19.6-20.6 mm (0.772-0.811 in) -
Rocker arm Arm-to-shaft clearance Intake/Exhaust 0.018-0.059 mm (0.00071-0.00232 in) 0.080 mm (0.00315 in)