Dodge D150 1990 Service Manual page 623

ENGINE SPECIFICATIONS—3.9L (CONT.)
VALVES—(EXHAUST)
Head Diameter 1.517"
Length overall Without Rotators 4.969"—5.005"
Length overall With Rotators 4.977"—5.012"
Stem Diameter (Standard) .371—.372"
Stem to Guide Clearance .002"—.004"
Maximum Allowable by rocking method .017"
Face Angle 4 4 - l / 2 ° - 4 5 °
Valves for Service (oversize stem diam.) Std., .005", .015", .030"
Lift (Zero Lash) .400"
ENGINE VALVE SPRINGS
LOCATION/IDENTIFICATION
Number
Color
Free Length (Approx.)
Wire Diameter
Number of coils
Load when compressed to
(valve closed)
Load when compressed to
(valve open)
Maximum allowable out of plumb
Valve spring installed height
(spring seat to retainer)
Use 1/16" spacer to reduce spacing height
when over specifications
Intake
6
Blue
2.00"
.192"
6.4
78-88 lbs.
@ 1-11/16"
170-184 lbs.
@ 1-5/16"
1/16"
1-5/8"—1-11/16"
Exhaust
(With Rotator)
6
White
1.81"
.185"
5.8
80-90 lbs.
@ 1-13/64"
180-194 lbs.
@ 1-1/16"
1/16"
1-29/64"—1-33/64"
ENGINE LUBRICATION
Pump Type Rotary,
Full Pressure
Capacity (qts.) U.S 4 (with or without Oil Filter)
Pump Drive Camshaft
Minimum Pressure, Engine Fully warmed up
*Curb Idle 6 psi
3000 RPM 30 to 80 psi
Oil Filter Bypass Valve Setting 9 to 15 psi
Oil Pressure Switch Minimum Actuating Pressure 5 to 7 psi
Oil Filter Type Full Flow
*lf pressure is "0" at curb idle, do not run engine at 3000 RPM.
J9009-105