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Home >> Acura >> 2011 >> RDX 2.3 TB1 >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine Service Specifications >> Engine Block

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 86.010-86.020 mm (3.38621-3.38661 in) 86.070 mm (3.38858 in)
Borll 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)
Piston Skirt O.D. at 10 mm (0.4 in) from bottom of skirt Letter B 85.970-85.980 mm (3.38464-3.38503 in) 85.920 mm (3.38267 in)
/(slash) 85.980-85.990 mm (3.38503-3.38543 in) 85.930 mm (3.38306 in)
Clearance in cylinder   0.020-0.040 mm (0.00079-0.00157 in) 0.05 mm (0.0020 in)
Ring groove width Top 1.535-1.565 mm (0.06043-0.06161 in) 1.25 mm (0.0492 in)
Second 1.230-1.240 mm (0.04843-0.04882 in) 1.25 mm (0.0492 in)
Oil 2.010-2.020 mm (0.07913-0.07953 in) 2.05 mm (0.0807 in)
Piston ring Ring-to-groove clearance Top 0.045-0.090 mm (0.002-0.003 in) 0.13 mm (0.005 in)
Second 0.040-0.065 mm (0.002-0.002 in) 0.13 mm (0.005 in)
Oil 0.020-0.050 mm (0.001-0.001 in) 0.08 mm (0.003 in)
Ring end gap Top 0.20-0.30 mm (0.008-0.011 in) 0.60 mm (0.023 in)
Second 0.40-0.50 mm (0.016-0.019 in) 0.75 mm (0.029 in)
Oil 0.10-0.30 mm (0.004-0.011 in) 0.80 mm (0.031 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   -0.005-0.002 mm (-0.00020-0.00008 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)
Small end bore diameter   21.970-21.976 mm (0.86496-0.86520 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 Main journal diameter No. 1 journal 54.984-55.008 mm (2.16472-2.16566 in) -
No. 2 journal 54.984-55.008 mm (2.16472-2.16566 in) -
No. 3 journal 54.976-55.000 mm (2.16441-2.16535 in) -
No. 4 journal 54.984-55.008 mm (2.16472-2.16566 in) -
No. 5 journal 54.984-55.008 mm (2.16472-2.16566 in) -
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   0.02 mm (0.0008 in) max. 0.04 mm (0.0016 in)
Crankshaft bearing Main bearing-to-journal oil clearance No. 1 journal 0.017-0.041 mm (0.00067-0.00161 in) 0.050 mm (0.00197 in)
No. 2 journal 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)
No. 4 journal 0.017-0.041 mm (0.00067-0.00161 in) 0.050 mm (0.00197 in)
No. 5 journal 0.017-0.041 mm (0.00067-0.00161 in) 0.050 mm (0.00197 in)
Connecting rod bearing-to-journal oil clearance   0.033-0.064 mm (0.00130-0.00252 in) 0.077 mm (0.00303 in)