2012 Honda Fit Base, Automatic TransFACTORY OEM SERVICE PROCEDURE

Engine Block

ENGINE BLOCK SPECIFICATION TABLE

Item Measurement Qualification Standard or New Service Limit
Block Warpage of deck - 0.07 mm (0.003 in.) max. -
Bore diameter - 73.000-73.015 mm (2.8740-2.8746 in.) 73.065 mm (2.8766 in.)
Bore taper - - 0.05 mm (0.002 in.)
Reboring limit - - 0.25 mm (0.010 in.)
Piston Skirt O.D. at 16 mm (0.6 in.) from bottom of skirt - 72.980-72.990 mm (2.8732-2.8736 in.) 72.97 mm (2.873 in.)
Clearance in cylinder - 0.010-0.035 mm (0.0004-0.0014 in.) 0.05 mm (0.002 in.)
Piston ring Ring-to-groove clearance Top (RIKEN) 0.065-0.090 mm (0.0026-0.0035 in.) 0.15 mm (0.006 in.)
Top (NIPPON PISTON RING) 0.061-0.090 mm (0.0024-0.0035 in.) 0.15 mm (0.006 in.)
Second 0.030-0.055 mm (0.0012-0.0022 in.) 0.12 mm (0.005 in.)
Ring end gap Top 0.15-0.30 mm (0.006-0.012 in.) 0.60 mm (0.024 in.)
Second (RIKEN) 0.30-0.42 mm (0.012-0.017 in.) 0.65 mm (0.026 in.)
Second (NIPPON PISTON RING) 0.35-0.50 mm (0.014-0.020 in.) 0.65 mm (0.026 in.)
Oil 0.20-0.70 mm (0.008-0.028 in.) 0.80 mm (0.031 in.)
Piston pin O.D. - 17.996-18.000 mm (0.7085-0.7087 in.) -
Pin-to-piston clearance - 0.010-0.017 mm (0.0004-0.0007 in.) -
Connecting rod Pin-to-rod interference - 0.019-0.036 mm (0.007-0.0014 in.) -
Small-end bore diameter - 17.964-17.977 mm (0.7072-0.7078 in.) -
Large-end bore diameter Nominal 43.0 mm (1.69 in.) -
End play - 0.15-0.35 mm (0.006-0.014 in.) 0.40 mm (0.016 in.)
Crankshaft Main journal diameter - 49.976-50.000 mm (1.9676-1.9685 in.) -
Rod journal diameter - 39.976-40.000 mm (1.5739-1.5748 in.) -
Rod/main journal taper - 0.005 mm (0.0002 in.) 0.010 mm (0.0004 in.)
Rod/main journal out-of-round - 0.005 mm (0.0002 in.) 0.010 mm (0.0004 in.)
End play - 0.10-0.35 mm (0.004-0.014 in.) 0.45 mm (0.018 in.)
Total runout - 0.03 mm (0.001 in.) max. 0.04 mm (0.002 in.)
Crankshaft bearing Main bearing-to-journal oil clearance - 0.018-0.036 mm (0.0007-0.0014 in.) 0.050 mm (0.0020 in.)
Connecting rod bearing-to-journal oil clearance - 0.020-0.038 mm (0.0008-0.0015 in.) 0.050 mm (0.0020 in.)
Factory Service Tools

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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.

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