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

Item  Measurement  Qualification  Standard or New  Service Limit 
Block Warpage of deck   0.07 mm (0.002 in) max. -
Bore diameter A or I 86.010-86.020 mm (3.38621-3.38661 in) 86.070 mm (3.38858 in)
B or II 86.000-86.010 mm (3.38582-3.38621 in) 86.070 mm (3.38858 in)
Bore taper   - 0.05 mm (0.0020 in)
Reboring limit   - 0.25 mm (0.0098 in) max.
Piston Skirt O.D. at 11 mm (0.43 in) from bottom of skirt Letter A 85.980-85.990 mm (3.38503-3.38543 in) 85.930 mm (3.38306 in)
Letter B 85.970-85.980 mm (3.38464-3.38503 in) 85.920 mm (3.38267 in)
Clearance in cylinder   0.020-0.040 mm (0.00079-0.00157 in) 0.05 mm (0.0020 in)
Piston ring Ring-to-groove clearance Top 0.065-0.090 mm (0.003 in) 0.11 mm (0.004 in)
Second 0.035-0.060 mm (0.002 in) 0.08 mm (0.003 in)
Ring end gap Top 0.20-0.25 mm (0.008-0.009 in) 0.25 mm (0.009 in)
Second 0.40-0.55 mm (0.016-0.021 in) 0.55 mm (0.021 in)
Oil 0.20-0.50 mm (0.008-0.019 in) 0.50 mm (0.019 in)
Piston pin O.D.   21.961-21.965 mm (0.86460-0.86476 in) 21.951 mm (0.86421 in)
Pin-to-piston clearance   0.002-0.010 mm (0.00008-0.00039 in) 0.020 mm (0.00079 in)
Connecting rod Pin-to-rod clearance   0.004-0.016 mm (0.00016-0.00063 in) 0.020 mm (0.00079 in)
Big end bore diameter   51.0 mm (2.008 in) -
End play   0.15-0.35 mm (0.006-0.013 in) 0.40 mm (0.015 in)
Crankshaft Rod/main journal taper   0.005 mm (0.00020 in) max. 0.010 mm (0.00039 in)
Rod/main journal out-of-round   0.004 mm (0.00016 in) max. 0.010 mm (0.00039 in)
End play   0.10-0.35 mm (0.0039-0.0138 in) 0.45 mm (0.0177 in)
Total runout   0.03 mm (0.0012 in) max. 0.03 mm (0.0012 in)
Crankshaft bearing Main bearing-to-journal oil clearance No. 1, 2, 4, 5 journals 0.017-0.041 mm (0.00067-0.00161 in) 0.050 mm (0.00197 in)
No. 3 journal 0.025-0.049 mm (0.00098-0.00193 in) 0.055 mm (0.00217 in)
Connecting rod bearing-to-journal oil clearance   0.032-0.066 mm (0.00126-0.00260 in) -