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Home › Acura › 2021 › TLX Base › Repair and Diagnosis › Engine Mechanical › Mechanical › Engine Mechanical Service Specifications › Engine Block (3.0L Engine)

Engine Block (3.0L Engine)

Item  Measurement  Qualification  Standard or New  Service Limit 
Block Warpage of deck   0.07 mm (0.002 in) max. -
Bore diameter X 86.000-86.020 mm (3.38582-3.38661 in) 86.065 mm (3.38838 in)
Y 86.000-86.015 mm (3.38582-3.38641 in) 86.065 mm (3.38838 in)
Bore taper   - 0.025 mm (0.00098 in)
Reboring limit   - 0.25 mm (0.0098 in) max.
Piston Skirt O.D. at 12 mm (0.47 in) from bottom of skirt   - 85.950 mm (3.38385 in)
Clearance in cylinder   - 0.08 mm (0.0031 in)
Piston ring Ring-to-groove clearance Top 0.065-0.090 mm (0.003 in) 0.090 mm (0.003 in)
Second 0.040-0.065 mm (0.002 in) 0.085 mm (0.003 in)
Ring end gap Top 0.20-0.23 mm (0.008-0.009 in) 0.23 mm (0.009 in)
Second 0.45-0.55 mm (0.018-0.021 in) 0.55 mm (0.021 in)
Oil 0.20-0.45 mm (0.008-0.018 in) 0.45 mm (0.017 in)
Piston pin O.D.   21.961-21.965 mm (0.86460-0.86476 in) 21.954 mm (0.86433 in)
Pin-to-piston clearance   0.002-0.010 mm (0.00008-0.00039 in) 0.017 mm (0.00067 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   56.0 mm (2.205 in) -
End play   0.15-0.35 mm (0.006-0.013 in) 0.45 mm (0.017 in)
Item  Measurement  Qualification  Standard or New  Service Limit 
Crankshaft Rod/main journal taper   0.005 mm (0.00020 in) max. 0.010 mm (0.00039 in)
Rod/main journal out-of-round   0.005 mm (0.00020 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   0.025 mm (0.00098 in) max. 0.030 mm (0.00118 in)
Crankshaft bearing Main bearing-to-journal oil clearance   0.019-0.045 mm (0.00075-0.00177 in) 0.045 mm (0.00177 in)
Connecting rod bearing-to-journal oil clearance   0.020-0.044 mm (0.00079-0.00173 in) -
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