Dodge RAM 1500 1998 Owner's Manual page 1236

DR
ENGINE - 3.7L (Continued)
PISTONS
DESCRIPTION
Diameter 92.975 mm
Weight 367.5 grams
Ring Groove
Diameter
No. 1 83.73 - 83.13
No. 2 82.833 - 83.033
No. 3 83.88 - 84.08
PISTON PINS
DESCRIPTION
Clearance In 0.006 - 0.015
Piston
Diameter 24.017 - 24.020
PISTON RINGS
DESCRIPTION
Ring Gap
Top 0.20 - 0.36 mm
Compression
Ring
Second 0.37 - 0.63 mm
Compression
Ring
Oil Control 0.25 - 0.76 mm
(Steel Rails)
Side Clearance
Top .051 - .094 mm
Compression
Ring
Second 0.040 - 0.080
Compression
Ring
Oil Ring (Steel .019 - .229 mm
Ring)
SPECIFICATION
Metric Standard
3.6605 in.
12.96 oz
3.296 - 3.273 in
mm
3.261 - 3.310 in.
mm
3.302 - 3.310 in.
mm
SPECIFICATION
Metric Standard
0.0002 - 0.0005
mm in.
0.9455 - 0.9456
mm in.
SPECIFICATION
Metric Standard
0.0079 - 0.0142
in.
0.0146 - 0.0249
in.
0.0099 - 0.30 in.
0.0020 - 0.0037
in.
0.0016 - 0.0031
mm in.
.0007 - .0091 in.
DESCRIPTION
Ring Width
Top 1.472 - 1.490
Compression
Ring
Second 1.472 - 1.490
Compression
Ring
Oil Ring (Steel 0.445 - 0.470
Rails)
CONNECTING RODS
DESCRIPTION
Bearing 0.015 - 0.055
Clearance
Side Clearance 0.10 - 0.35 mm
Piston Pin .015 - .028 mm
Clearance
Bearing Bore 0.004 mm
Out of Round
(MAX)
Total Weight 612 grams
(Less Bearing)
ENGINE - 3.7L
SPECIFICATION
Metric Standard
0.057 - 0.058 in.
mm
0.057 - 0.058 in.
mm
0.017 - 0.018 in.
mm
SPECIFICATION
Metric Standard
0.0006 - 0.0022
mm in.
0.004 - 0.0138
in.
0.0006 - 0.0011
in.
0.0002 in.
21.588 ounces
9 - 13