Block and Piston Inspection

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 (0.63 m) from the bottom of the skirt
J35Z6 engine

Piston Skirt Diameter

Standard (New): 88 975-88 985 mm (3.5029-3.5033 in)

Service Limit: 88.965 mm (3.5026 in)

Oversize Piston Skirt Diameter

0.25: 89.225 - 89.235 mm (3.5128 - 3.5132 in)

J37A4 engine

Piston Skirt Diameter

Standard (New): 89 983-89 996 mm (3 5426-3 5431 in)

Service Limit: 89 975 mm (3 5423 in)

Fig 1: Measuring Piston Skirt Diameter
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Measure the wear and taper in direction X and Y at three levels in each cylinder as shown
J35Z6 engine If the 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 8 after reboring
J37A4 engine If the measurements in any cylinder are beyond the service limit, replace the engine block The J37A4 engine block can not be rebored

J35Z6 engine

Cylinder Bore Size

Standard (New): 89.000-89.015 mm (3.5039-3.5045 in)

Service Limit: 89.065 mm (3.5065 in)

Oversize

0.25: 89.250-89.265 mm (3.5138-3.5144 in)

Reboring Limit 0.25 mm (0.01 in)

Bore Taper

Limit (Difference between first and third measurement) 0.015 mm (0.00059 in)

J37A4 engine

Cylinder Bore Size

Standard (New): 90.000-90.015 mm (3.5433-3.5439 in)

Service Limit: 90.065 mm (3.5459 in)

Bore Taper

Limit (Difference between first and third measurement) 0.015 mm (0.00059 in)

Fig 2: Measuring Cylinder Bore Size
Courtesy of AMERICAN HONDA MOTOR CO., INC.
J35Z6 engine Hone any scored or scratched cylinder bores (see CYLINDER BORE HONING )
NOTE: The J37A4 engine can not be honed If the cylinders are damaged, the engine block must be replaced
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 (0.003 in) max.

Service Limit: 0.10 mm (0.004 in)

Fig 3: Checking Top Of Engine Block For Warpage
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Calculate the difference between the 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
J35Z6 engine

Piston-to-Cylinder Bore Clearance

Standard (New): 0 015-0 040.mm (0.0006-0.0016 in.)

Service Limit: 0 08 mm (0.003 in)

J37A4 engine

Piston-to-Cylinder Bore Clearance

Standard (New): 0.004-0.032 mm (0.00016-0.0013 in)

Service Limit: 0.070 mm (0.0027 in)

Fig 4: Inspecting Piston And Cylinder Bore For Excessive Wear
Courtesy of AMERICAN HONDA MOTOR CO., INC.