Block And Piston Inspection - Honda S2000 Service Manual

Engine Block
Block and Piston Inspection
1 . Remove the crankshaft and pistons (see page 7-1 1).
Check the Diston for distortion or cracks.
Measure the piston diameter at a point 16 mm
(0.6 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 lNew):
No Leftor (or A): 86.993 87.006 mm
8.4219 -3.4254 in.l
B: 86.983 86.996 mm
(3.4245- 3.4250 in.)
Service Limit:
No Letter {or A}: 86.980 mm (3.4244 in.}
B:
86.970 mm (3.4240 in.l
16 mm
{0.6 in.}
I
Oversize Piston Diameter:
0.251 87.233 87.246 mm {3.4344 3./849 in.}
SKIRT DIAMETER
7-14
4. Measure wear and taper in direction X and Y at
three levels in each cylinder as shown. lf
measurements in any cylinder are beyond the
Oversize Bore Service Limit, replace the block. li
the block is to be rebored, reJer to step 7 after
reboring,
Cylinder Bore Size:
Standard {New):
A o r l : 8 7 . 0 1 0 - 8 7 . 0 2 0 m m
{3.4256 3./1260 in.)
B or ll:
87.000 87.010 mm
13.4252 3.4256 in.l
Service Limit: 87.070 mm (3.4279 in.)
Oversize:
0.251 87.250 87.260 mm (3.4350 3.4354 in.l
Reboring limit: 0.25 mm {0.01 in.} max.
Bore Taper:
Limit: (Difference between tirst and third
measurement) 0.05 mm (0.002 in.)
6 mm (0.2 in.)
t
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t l l a
l l - 1
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6 mm {0.2 in.l
First
Measurement
Second
Third
Measurem€nt