Chrysler RAM TRUCK 2500 1994 Service Manual page 789

ENGINE SPECIFICATIONS (CONT.J
O i l Pump
Clearance Over Rotors (Max.) 0.1016 mm
(0.004 in)
Cover Out-of-Flat (Max.) 0.0381 mm
(0.0015 in)
Inner Rotor Thickness (Min.) . . . . . . 20.955 mm
(0.825 in)
Outer Rotor
Clearance (Max.) 0.3556 mm
(0.014 in)
Diameter (Min.) 62.7126 mm
(2.469 in)
Thickness (Min.) 20.955 mm
(0.825 in)
Tip Clearance Between Rotors (Max).. 0.2032 mm
(0.008 in)
O i l P r e s s u r e
At Curb Idle Speed* 41.4 kPa
(6 psi)
At 3000 rpm 207-552 kPa
(30-80 psi)
Oil Pressure Switch
Actuating Pressure (Min.) 34.5-48.3 kPa
(5-7 psi)
* C A U T I O N : If pressure is Z E R O at curb idle,
D O NOT run engine at 3,000 rpm.
Oil Filter
Bypass Valve Setting 62-103 kPa
(9-15 psi)
Pistons
Clearance at Top of Skirt 0.0127-0.0381 mm
(0.0005-0.0015 in)
Land Clearance (Diametrical) . . . . . 0.635-1.016 mm
(0.025-0.040 in)
Piston Length 86.360 mm
(3.40 in)
Piston Ring Groove Depth
Nos. 1 and 2 4.572-4.826 mm
(0.180-0.190 in)
No. 3 . 3.810-4.064 mm
(0.150-0.160 in)
Weight 592.6-596.6 grams
(20.90-21.04 oz)
P i s t o n P i n s
Clearance
In Piston 0.00635-0.01905 mm
(0.00025-0.00075 in)
In Rod (Interference) 0.0178-0.0356 mm
(0.0007-0.0014 in)
D i a m e t e r . . . . 24.996-25.001 mm
(0.9841-0.9843 in)
End Play. N O N E
Length 75.946-76.454 mm
(2.990-3.010 in)
P i s t o n R i n g s
Ring G a p
Compression Rings 0.254-0.508 mm
(0.010-0.020 in)
Oil Control (Steel Rails) . . . . 0.254-1.270 mm
(0.010-0.050 in)
Ring Side Clearance
Compression Rings . 0.038-0.076 mm
(0.0015-0.0030 in)
Oil Ring (Steel Rails) 0.06-0.21 mm
(0.002-0.008 in)
Ring Width
Compression Rings 1.971-1.989 mm
(0.0776-0.0783 in)
Oil Ring (Steel Rails) 3.848-3.975 mm
(0.1515-0.1565 in)
V a l v e s
Face Angle 4 3 . 2 5 ° - 4 3 . 7 5 °
Head Diameter
Intake 4 8 . 6 6 6 mm
(1.916 in)
Exhaust 41.250 mm
(1.624 in)
Length (Overall)
Intake 124.28-125.92 mm
(4.893-4.918 in)
Exhaust 124.64-125.27 mm
(4.907-4.932 in)
Lift (Zero Lash) 10.973 mm
(0.432 in)
Stem Diameter 7.899-7.925 mm
(0.311-0.312 in)
Stem-to-Guide Clearance 0.0254-0.0762 mm
(0.001-0.003 in)
Max. Allowable (Rocking Method).. 0.4318 mm
(0.017 in)
Guide Bore Diameter (Std) . . . . . . . 7.950-7.976 mm
(0.313-0.314 in)
J9309-32