Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Engine Block
2015 Acura ILX 2.0L Eng VIN 1SECTION Engine Block
| Item | Measurement | Qualification | Standard or New | Service Limit |
|---|---|---|---|---|
| Block | Warpage of deck | 0.07 mm (0.002 in) max. | - | |
| Bore diameter | A or I | 87.010-87.020 mm (3.42558-3.42598 in) | 87.070 mm (3.42795 in) | |
| B or II | 87.000-87.010 mm (3.42519-3.42558 in) | 87.070 mm (3.42795 in) | ||
| Bore taper | - | 0.05 mm (0.0020 in) | ||
| Reboring limit | - | 0.25 mm (0.0098 in) max. | ||
| Piston | Skirt O.D. at 10 mm (0.39 in) from bottom of skirt | Letter A | 86.980-86.990 mm (3.42440-3.42480 in) | 86.930 mm (3.42243 in) |
| Letter B | 86.970-86.980 mm (3.42401-3.42440 in) | 86.920 mm (3.42204 in) | ||
| Clearance in cylinder | 0.020-0.040 mm (0.00079-0.00157 in) | 0.05 mm (0.0020 in) |
| Item | Measurement | Qualification | Standard or New | Service Limit |
|---|---|---|---|---|
| Piston ring | Ring-to-groove clearance | Top | 0.060-0.085 mm (0.003 in) | 0.13 mm (0.005 in) |
| Second | 0.035-0.060 mm (0.002 in) | 0.13 mm (0.005 in) | ||
| Ring end gap (except RIKEN) | Top | 0.20-0.25 mm (0.008-0.009 in) | 0.50 mm (0.019 in) | |
| Second | 0.30-0.40 mm (0.012-0.015 in) | 0.45 mm (0.017 in) | ||
| Oil | 0.10-0.35 mm (0.004-0.013 in) | 0.60 mm (0.023 in) | ||
| Ring end gap (RIKEN) | Top | 0.20-0.28 mm (0.008-0.011 in) | 0.50 mm (0.019 in) | |
| Second | 0.29-0.41 mm (0.011-0.016 in) | 0.45 mm (0.017 in) | ||
| Oil | 0.10-0.40 mm (0.004-0.015 in) | 0.60 mm (0.023 in) | ||
| Piston pin | O.D. | 21.962-21.965 mm (0.86464-0.86476 in) | 21.953 mm (0.86429 in) | |
| Pin-to-piston clearance | -0.005-0.001 mm (-0.00020-0.00004 in) | 0.005 mm (0.00020 in) | ||
| Connecting rod | Pin-to-rod clearance | 0.005-0.014 mm (0.00020-0.00055 in) | 0.02 mm (0.0008 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 journal diameter | 47.976-48.000 mm (1.88882-1.88976 in) | - | |
| 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. | - | ||
| 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) | - |
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.