Pistons; Inspection - Honda Prelude 1993 Service Manual

Pistons
B:
F22Al sngino:
21 mm 10.8 inl
Inspection
Check the Diston for distonion or cracks.
NOTE: lf the cylinder is bored, an oversized piston
must be used.
Measure the piston diameter at a point F22A1: 21 mm
(0.8 in), H23A1, H22A1: 15 mm (0.6 in) from the bottom
of the skirt.
N O T E : T h e r e a r e t w o s t a n d a r d - s i z e p i s t o n s ( N o
Letter (A) or B). The letter is stamped on the top of
the piston. There letters are also stamped on the
block as cylinder bore sizes.
Piston Diameter:
F22Al engine:
Standard lNewl:
No Letter lA): 8i[.980 - 8i1.990 mm
(3.3457 - 3.3451 inl
B:
84.970 - 84.980 mm
13.3453 - 3.3,157 in)
Service Limit:
No Letter {A}: 8i0.970 mm (3.3453 in}
B:
84.950 mm (3.3449 in)
H23A1, H22A1 enginss:
Standard lNewl:
No Letter (A): 86.990 - 87.003 mm
(3./1248 - 3.4253 inl
B:
86.980 - 86.993 mm
{3.,[2/14 - 3.42,19 inl
Service Limit:
No Lettor {A}: 86.980 mm {3.,12,14 inl
86.970 mm (3.,[2'10 in]
SKIRT
DIAMETER
7 - 1 6
4.
C a l c u l a t e t h e d i f f e r e n c e b e t w e e n c y l i n d 6 r b o r e
diameter on (page 7-17) and piston diamet6r.
Pbton-to-Cvlinder Clsrranco:
F22Al engine:
Standard (N€w): 0.020 - 0.0/(, mm
l0.00oB - 0.0016 in)
Service Limil:
0.05 mm {0.002 in)
H2341, H22A1 engines:
Standard (Newl: 0.007 - 0.030 mm
(0.0003 - 0.0012 in)
Sorvice Limit:
0.04 mm (0.002 inl
lf the clearance is near or excesds the service limit,
inspect the piston and cylinder block for excessive
wear.
Ovorsize Piston Diamoter:
F22A1 engine:
0.25: 85.230 - 85.2/0 mm {3.3555 - 3.3559 in}
0.50: 85.,180 - 85.tlln mm {3.3653 - 3.3657 in}
H23A1. H22Al rngin.3:
O.25t 87 .230 - 87.2,(l mm (3./8/02 - 3.,13{8 in)
Check the piston pin-to-piston clearance. Coat ths
piston pin with engine oil. lt should then be possi-
ble to push the piston pin into the piston hole with
thumb Dressure,
Piston Pin-to Piston Clctrtnco:
F22Al engine:
Standard (Newl: 0.012 - 0.02a mm
(0.fi)05- 0.qt0o in)
H23Al, H22Al ongines:
Standard {N€w}: 0.012 - 0.026 mm
10.000t- o.(XllO in)