Pistons Inspection - Acura 3.5 RL Manual

Pistons
Inspection
1. Check the piston for distortion or cracks.
2. Measure the piston diameter at a point 14.0 mm
(0.55 in) from the bottom of the skirt.
NOTE: There are two standard-size pistons (No let-
ter or A, and B). The letter is stamped on the top of
the piston. Letters are also stamped on the cylinder
block as cylinder bore sizes.
Standard Piston Diameter
No Letter 89.980 - 89.990 mm
(A) (3.5425 - 3.5429 in)
89.970 - 89.980 mm
B
(3.5421- 3.5425 in)
Oversize Piston Diameter
0.25: 90.230 - 90.240 mm (3.5524 - 3.5527 in)
0.50: 90.480 - 90.490 mm (3.5622 - 3.5626 in)
14.0 mm
(0.55 in)
Service Limit
89.970 mm
(3.5421 in)
89.960 mm
(3.5417 in)
SKIRT DIAMETER
3. Calculate the difference between cylinder bore diame-
ter (see page 7-15) and piston diameter.
Piston-to-Block Clearance
Standard (New): 0.02 - 0.04 mm
(0.001 - 0.002 in)
Service Limit: 0.08 mm (0.003 in)
SERVICE LIMIT
0.08 mm (0.003 in)