Chrysler 1998 Voyager, Service Manual, Page: 1147 / 1938

FITTING PISTONS AND RINGS
FITTING PISTONS
The piston and cylinder wall must be clean and
dry. Piston diameter should be measured 90 degrees
to piston pin at size location shown in (Fig. 8). Cyl-
inder bores should be measured halfway down the
cylinder bore and transverse to the engine crankshaft
center line shown in (Fig. 7). Refer to Cylinder Bore
and Piston Specification Chart. Pistons and cylin-
der bores should be measured at normal room
temperature, 70°F (21°C).
FITTING RINGS
(1) Wipe cylinder bore clean. Insert ring and push
down with piston to ensure it is square in bore. The
ring gap measurement must be made with the ring
positioning at least 12 mm (0.50 in.) from bottom of
cylinder bore. Check gap with feeler gauge (Fig. 9).
Refer to Piston Ring Specification Chart.
(2) Check piston ring to groove clearance: (Fig. 10).
Refer to Piston Ring Specification Chart.
FITTING CONNECTING ROD BEARINGS
Fit all rods on one bank until complete.
The bearing caps are not interchangeable and
should be marked at removal to insure correct
assembly.
The bearing shells must be installed with the
tangs inserted into the machined grooves in the rods
and caps. Install cap with the tangs on the same side
as the rod.
Limits of taper or out-of-round on any crankshaft
journals should be held to 0.025 mm (0.001 in.).
Bearings are available in 0.025 mm (0.001 in.) and
0.250 mm (0.010 in.) undersize. Install the bear-
ings in pairs. Do not use a new bearing half
Fig. 6 Measuring Timing Chain Wear and Stretch
Fig. 7 Checking Cylinder Bore Size
CYLINDER BORE AND PISTON
SPECIFICATION CHART
Engine
Standard
Bore
Maximum
Out-Of-
Round
Maximum
Taper
3.3L 92.993 -
93.007 mm 0.076 mm 0.51 mm
(3.661 -
3.6617 in.) (0.003 in.) (0.002 in.)
3.8L 95.993 -
96.007 mm Same Same
3.7792 -
3.780 in.
Standard Piston Size
3.3L 92.950 - 92.968 mm (3.6594 - 3.6602 in.)
3.8L 95.950 - 95.968 mm (3.7776 - 3.7783 in.)
Piston to Bore Clearance: 0.025 - 0.057 mm
(0.0009 - 0.0022 in.)
Measurements taken at Piston Size Location.
Fig. 8 Piston Measurements
NS
3.3/3.8L ENGINE 9 - 97
SERVICE PROCEDURES (Continued)