Engine Block (K20C1: Type-R)
WARNING: This page is about a different car, the 2021 Honda Civic, 2020 Honda Civic, 2019 Honda Civic, 2018 Honda Civic, and 2017 Honda Civic. However, it is still accessible from the selected car via links, so may be relevant.
| 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) | - |