Dodge 2001 Ram 1500 Owner's Manual page 1164

BR/BE
ENGINE 3.9L (Continued)
DESCRIPTION
End Play
Length
PISTON RINGS
Ring Gap
Compression Rings
Oil Control (Steel Rails)
Ring Side Clearance
Compression Rings
Oil Control (Steel Rails)
Ring Width
Compression Rings
Oil Control (Steel Rails)
VALVE TIMING
Exhaust Valve
Closes
Opens
Duration
Intake Valve
Closes
Opens
Duration
Valve Overlap
SPECIFICATION
None
75.946 - 76.454 mm
(2.990 - 3.010 in.)
0.254 - 0.508 mm
(0.010 - 0.020 in.)
0.254 - 1.270 mm
(0.010 - 0.050 in.)
0.038 - 0.076 mm
(0.0015 - 0.0030 in.)
0.06 - 0.21 mm
(0.002 - 0.008 in.)
1.971 - 1.989 mm
(0.0776 - 0.0783 in.)
3.848 - 3.975 mm
(0.1515 - 0.1565 in.)
16° (ATDC)
52° (BBDC)
248°
50° (ABDC)
10° (BTDC)
240°
26°
OVERSIZE AND UNDERSIZE ENGINE
COMPONENT MARKINGS CHART
OS-US Item
U/S Crankshaft
.0254
MM
(.001
IN.)
O/S Tappets
.2032
mm
(.008 in.)
O/S Valve
Stems
.127 mm
(0.005
in.)
ENGINE 3.9L
Identification Location of
Identification
R or M M-2-3 Milled flat on
ect.
(indicating No. No. eight
2 &
3 main crankshaft
bearing
journal) and/or counterweight.
R-1-4 ect.
(indicating No.
1 &
4 connecting
rod
journal)
3/8
diamound
-shaped
stamp Top
pad
— Front of
engine and
flat
ground on
outside
surface
of each O/S
tappet bore.
X Milled pad
adjacent to
two
3/8 tapped
holes on
each
end of
cylinder
head.
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