Dodge 2001 Ram 1500 Owner's Manual page 1163

9 - 16 ENGINE 3.9L
ENGINE 3.9L (Continued)
DESCRIPTION
Number of Coils
Installed Height
Wire Diameter
HYDRAULIC TAPPETS
Body Diameter
Clearance in Block
Dry Lash
Push Rod Length
OIL PRESSURE
@ Curb Idle (Min.)*
@ 3000 rpm
Bypass Valve Setting
Switch Actuating
Pressure
* If oil pressure is zero at curb idle, DO NOT RUN
ENGINE.
OIL PUMP
Clearance Over Rotors
(Max)
Cover Out of Flat
(Max)
Inner Rotor Thickness
(Min)
SPECIFICATION
6.8
41.66 mm
(1.64 in.)
4.50 mm
(0.177 in.)
22.949 - 22.962 mm
(0.9035 - 0.9040 in.)
0.0279 - 0.0610 mm
(0.0011 - 0.210 in.)
1.524 - 5.334 mm
(0.060 - 0.210 in.)
175.64 - 176.15 mm
(6.915 - 6.935 in.)
41.4 kPa
(6 psi)
207 - 552 kPa
(30 - 80 psi)
62 - 103 kPa
(9 - 15 psi)
34.5 - 48.3 kPa
(5 - 7 psi)
0.1016 mm
(0.004 in.)
0.0381 mm
(0.0015 in.)
20.955 mm
(0.825 in.)
DESCRIPTION
Outer Rotor Clearance
(Max)
Outer Rotor Diameter
(Min)
Outer Rotor Thickness
(Min)
Tip Clearance Between
Rotors
(Max)
PISTONS
Clearance at Top of Skirt
Land Clearance
(Diameter)
Piston Length
Ring Groove Depth
#1 & 2
Weight
PISTON PINS
Clearance in Piston
Clearance in Rod
(Interference)
Diameter
BR/BE
SPECIFICATION
0.3556 mm
(0.014 in.)
62.7126 mm
(2.469 in.)
20.955 mm
(0.825 in.)
0.2032 mm
(0.008 in.)
0.0127 - 0.0381 mm
(0.0005 - 0.0015 in.)
0.635 - 1.016 mm
(0.025 - 0.040 in.)
86.360 mm
(3.40 in.)
4.572 - 4.826 mm
(0.180 - 0.190 in.)
#3 3.810 - 4.064 mm
(0.150 - 0.160 in.)
592.6 - 596.6 grams
(20.90 - 21.04 oz.)
0.0064 - 0.0191 mm
(0.00025 - 0.00075 in.)
0.0178 - 0.0356 mm
(0.0007 - 0.0014 in.)
24.996 - 25.001 mm
(0.9841 - 0.9843 in.)