Acura TSX / Honda Accord CL. Manual - part 455

Fig. 205: Measuring Runout On All Main Journals 

BLOCK & PISTON INSPECTION 

1. Remove the crankshaft and pistons (see CRANKSHAFT & PISTON REMOVAL ).  

2. Check the piston for distortion or cracks.  

3. Measure the piston diameter at a point 11 mm (0.4 in.) from the bottom of the skirt. There are two 

standard-size pistons (No Letter or A, and B). The letter is stamped on the top of the piston. Letters are 
also stamped on the block as cylinder bore sizes. 

Piston Diameter: 

Standard (New): 

No Letter (or A): 86.980-86.990 mm (3.4244-3.4248 in.)  

B: 86.970-86.980 mm (3.4240-3.4244 in.) 

 

2004 Acura TSX 

2004 ENGINES 2.4L DOHC VTEC - TSX

  

 

Service Limit: 

No Letter (or A): 86.930 mm (3.4224 in.)  

B: 86.920 mm (3.4220 in.)  

Oversize Piston Diameter: 0.25: 87.230-87.240 mm (3.4342-3.4346 in.)  

 

2004 Acura TSX 

2004 ENGINES 2.4L DOHC VTEC - TSX

  

 

Fig. 206: Measuring The Piston Diameter 

4. Measure wear and taper in direction X and Y at three levels in each cylinder as shown. See Fig. 207 . If 

measurements in any cylinder are beyond the Oversize Bore Service Limit, replace the block. If the block 
is to be rebored, refer to step 7 after reboring. 

 

2004 Acura TSX 

2004 ENGINES 2.4L DOHC VTEC - TSX

  

 

Cylinder Bore Size Standard (New): 

A or I: 87.010-87.020 mm (3.4256-3,4260 in.)  

B or ll: 87.000-87.010 mm (3.4252-3.4256 in.)  

Service Limit: 87.070 mm (3.4279 in.)  

Oversize 0.25: 87.250-87.260 mm (3.4350-3.4354 in.)  

Reboring Limit: 0.25 mm (0.01 in.) Max.  

Bore Taper Limit (Difference between first & third measurement): 0.05 mm (0.002 in.). 

 

2004 Acura TSX 

2004 ENGINES 2.4L DOHC VTEC - TSX