Block and Piston inspection
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2015 Honda Crosstour, 2014 Honda Crosstour, 2013 Honda Crosstour, 2012 Honda Crosstour, and 2011 Honda Accord Crosstour. However, it is still accessible from the selected car via links, so may be relevant.
- Remove the pistons from the engine block (see CRANKSHAFT AND PISTON REMOVAL ).
- Check the pistons for distortion or cracks.
- Measure the piston skirt diameter at a point 16.0 mm (0.630 in) from the bottom of the skirt.
Piston Skirt Diameter
Standard (New): 88.975-88.985 mm (3.50295-3.50334 in)
Service Limit: 88.965 mm (3.50255 in)
Oversize Piston Skirt Diameter
0.25: 89.225-89.235 mm (3.51279-3.51318 in)
- Measure the wear and taper in direction X and Y at three levels in each cylinder as shown. If measurements in any cylinder are beyond the oversize bore service limit, replace the engine block. If the engine block has to be rebored, refer to step 7 after reboring.
Cylinder Bore Size
Standard (New): 89.000-89.015 mm (3.50393-3.50452 in)
Service Limit: 89.065 mm (3.50649 in)
Oversize
0.25: 89.250-89.265 mm (3.51377-3.51436 in)
Reboring Limit: 0.25 mm (0.0098 in)
Bore Taper
Limit: (Difference between first and third measurement) 0, 05 mm (0.0020 in)
- Hone any scored or scratched cylinder bores (see CYLINDER BORE HONING ).
- Check the top of the engine block for warpage. Measure along the edges and across the center as shown.
Engine Block Warpage
Standard (New): 0.07 mm (0.0028 in) max.
Service Limit: 0.10 mm (0.0039 in)
- Calculate the difference between cylinder bore diameter and the piston diameter. If the clearance is near or exceeds the service limit, inspect the piston and the cylinder bore for excessive wear.
Piston-to-Cylinder Bore Clearance
Standard (New): 0.015-0.040 mm (0.00059-0.00157 in)
Service Limit: 0.08 mm (0.0031 in)