Honda 2004 Odyssey Service Manual page 251

Engine Block
Piston Ring Replacement (cont'd)
6. Install the rings as shown. The top ring (A) has a 1D
mark and the second ring (B) has a 2C mark. The
manufacturing marks (C) must be facing upward.
A
B
Piston Ring Dimensions:
A
7-22
A
B
C
C
Top Ring (Standard)
A: 3.1 mm (0.12 in.)
B: 1.2 mm (0.05 in.)
B
Second Ring (Standard)
A: 3.4 mm (0.13 in.)
B: 1.2 mm (0.05 in.)
7. After installing a new set of rings, measure the
ring-to-groove clearance.
Top Ring Clearance
Standard (New):
1999-2001 0.035 0.060 mm
models: (0.0014 0.024 in.)
2002-2004 0.055 0.080 mm
models: (0.0022 0.0031 in.)
Service Limit: 0.13 mm (0.005 in.)
Second Ring Clearance
Standard (New): 0.030 0.055 mm
(0.0012 0.0022 in.)
Service Limit: 0.13 mm (0.005 in.)
8. Rotate the rings in their grooves to make sure they
do not bind.
9. Position the ring end gaps as shown:
About 90°
OIL RING GAP
TOP RING GAP
and SPACER
RING GAP
SECOND RING GAP
About 45°
OIL RING GAP
PISTON PIN