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Engine Block

(R20A5) 

Item Measurement Qualification Standard or New Service Limit
Block Warpage of deck   0.07 mm (0.002 in) max. -
Bore diameter   81.000-81.015 mm (3.18897-3.18956 in) 81.070 mm (3.19173 in)
Bore taper   - 0.05 mm (0.0020 in)
Reboring limit   - 0.25 mm (0.0098 in)
Piston Skirt O.D. at 14 mm (0.55 in) from bottom of skirt   80.98-80.99 mm (3.1882-3.1886 in) 80.93 mm (3.1862 in)
Clearance in cylinder   0.010-0.035 mm (0.00039-0.00138 in) 0.05 mm (0.0020 in)
Piston ring Ring-to-groove clearance Top 0.045-0.070 mm (0.002-0.002 in) 0.13 mm (0.005 in)
Second 0.035-0.060 mm (0.002-0.002 in) 0.13 mm (0.005 in)
Ring end gap Top 0.20-0.35 mm (0.008-0.013 in) 0.60 mm (0.023 in)
Second 0.40-0.55 mm (0.016-0.021 in) 0.70 mm (0.027 in)
Oil(except RIKEN) 0.20-0.70 mm (0.008-0.002 in) 0.80 mm (0.031 in)
Oil(RIKEN) 0.20-0.50 mm (0.008-0.019 in) 0.55 mm (0.021 in)
Item Measurement Qualification Standard or New Service Limit
Piston pin O.D.   19.960-19.964 mm (0.78583-0.78598 in) 19.960 mm (0.78583 in)
Pin-to-piston clearance   -0.004-0.003 mm (-0.00016-0.00012 in) 0.006 mm (0.00024 in)
Connecting rod Pin-to-rod clearance   0.005-0.015 mm (0.00020-0.00059 in) 0.02 mm (0.0008 in)
Small end bore diameter   19.969-19.975 mm (0.78618-0.78642 in) -
Big end bore diameter   48.0 mm (1.890 in) -
End play   0.15-0.35 mm (0.006-0.013 in) 0.45 mm (0.017 in)
Crankshaft Main journal diameter No. 1, 5 journals 54.980-55.004 mm (2.16456-2.16551 in) -
No. 2, 3, 4 journals 54.976-55.000 mm (2.16441-2.16535 in) -
Rod journal diameter   44.976-45.000 mm (1.77071-1.77165 in) -
Rod/main journal taper   0.005 mm (0.00020 in) max. 0.010 mm (0.00039 in)
Rod/main journal out-of-round   0.005 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   0.03 mm (0.0012 in) max. 0.04 mm (0.0016 in)
Crankshaft bearing Main bearing-to-journal oil clearance No. 1, 5 journals 0.017-0.033 mm (0.00067-0.00130 in) 0.043 mm (0.00169 in)
No. 2, 3, 4 journals 0.018-0.034 mm (0.00071-0.00134 in) 0.040 mm (0.00157 in)
Connecting rod bearing-to-journal oil clearance   0.024-0.042 mm (0.00094-0.00165 in) 0.055 mm (0.00217 in)
Balancer shaft Journal diameter No. 1 journal, front and rear shafts 19.958-19.970 mm (0.78575-0.78622 in) 19.94 mm (0.7850 in)
No. 2 journal, front shaft 25.969-25.981 mm (1.02240-1.02287 in) 25.962 mm (1.02212 in)
No. 2 journal, rear shaft 19.958-19.970 mm (0.78575-0.78622 in) 19.94 mm (0.7850 in)
No. 3 journal, rear shaft 25.969-25.981 mm (1.02240-1.02287 in) 25.962 mm (1.02212 in)
Journal taper   0.05 mm (0.0020 in) max. -
End play Front 0.07-0.12 mm (0.0028-0.0047 in) 0.135 mm (0.00531 in)
Rear 0.07-0.12 mm (0.0028-0.0047 in) 0.135 mm (0.00531 in)
Shaft-to-bearing clearance No. 1 journal, front and rear shafts 0.030-0.062 mm (0.00118-0.00244 in) 0.08 mm (0.0031 in)
No. 2 journal, front shaft 0.04-0.10 mm (0.0016-0.0039 in) 0.13 mm (0.0051 in)
No. 2 journal, rear shaft 0.030-0.062 mm (0.00118-0.00244 in) 0.08 mm (0.0031 in)
No. 3 journal, rear shaft 0.04-0.10 mm (0.0016-0.0039 in) 0.13 mm (0.0051 in)
Balancer shaft bearing I.D. No. 1 journal, front and rear shafts 20.00-20.02 mm (0.7874-0.7882 in) 20.03 mm (0.7886 in)
No. 2 journal, front shaft 26.021-26.029 mm (1.02445-1.02476 in) 26.05 mm (1.0256 in)
No. 2 journal, rear shaft 20.00-20.02 mm (0.7874-0.7882 in) 20.03 mm (0.7886 in)
No. 3 journal, rear shaft 26.021-26.029 mm (1.02445-1.02476 in) 26.05 mm (1.0256 in)

(K24Z7) 

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) 87.07 mm (3.4279 in)
B or II 87.000-87.010 mm (3.42519-3.42558 in) 87.07 mm (3.4279 in)
Bore taper   - 0.05 mm (0.0020 in)
Reboring limit   - 0.25 mm (0.0098 in)
Piston Skirt O.D. at 13 mm (0.51 in) from bottom of skirt No letter or 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) 0.050 mm (0.00197 in)
Piston ring Ring-to-groove clearance Top 0.060-0.085 mm (0.003-0.003 in) 0.13 mm (0.005 in)
Second 0.020-0.045 mm (0.001-0.001 in) 0.13 mm (0.005 in)
Ring end gap Top 0.20-0.30 mm (0.008-0.011 in) 0.60 mm (0.023 in)
Second 0.20-0.32 mm (0.008-0.012 in) 0.75 mm (0.029 in)
Oil 0.20-0.50 mm (0.008-0.019 in) 0.55 mm (0.021 in)
Piston pin O.D.   21.961-21.965 mm (0.86460-0.86476 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   0.005-0.015 mm (0.00020-0.00059 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   0.03 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) 0.077 mm (0.00303 in)