Chrysler RAM TRUCK 2500 1994 Service Manual page 841

ENGINE SPECIFICATIONS (CONT.)
O i l Pump
Clearance over Rotors (Max.) 0.1906 mm
(0.0075 in)
Cover Out-of-Flat (Max.) 0.051 mm
(0.002 in)
Inner Rotor Thickness (Min.) 14.925 • 14.950 mm
(0.5876 - 0.5886 in)
Outer Rotor
Clearance (Max.) 0.1626 mm
(0.006 in)
Diameter (Min.) 82.461 mm
(3.246 in)
Thickness (Min.) 14.925 mm
(0.5876 in)
Tip Clearance between Rotors (Max.) 0.584 mm
(0.0230 in)
O i l Pressure (Engine Hot)
At Curb Idle Speed * 83 - 172 kPa
( 1 2 - 2 5 psi)
At 3000 rpm 3 4 5 - 4 1 4 k P a
(50 - 60 psi)
•CAUTION: If pressure is ZERO at curb idle, DO NOT
run engine at 3,000 rpm.
Pistons
Land Clearance (Diametrical) 0.013 - 0.038 mm
(0.0005 - 0.0015 in)
Piston Length 82.5 mm
(3.25 in)
Piston Ring Groove Diameter
No. 1 & No.2 9 1 . 3 0 - 9 1 . 5 5 mm
(3.594 - 3.604 in)
No.3 9 2 . 9 0 - 9 3 . 1 5 mm
(3.657 - 3.667 in)
Weight 463 - 473 grams
(16.33- 16.68 oz)
Piston Pins
Clearance
In Piston 0.2489 - 0.5537 mm
(0.0098-0.0218 in)
In Rod (Interference) 0.018 - 0.061 mm
(0.0007 - 0.0024 in)
Diameter 24.996 - 25.001 mm
(0.9841 - 0.9843 in)
End Play NONE
Length 67.818 - 68.326 mm
(2.670 - 2.690 in)
Piston Rings
Ring G a p
Compression Rings 0.254 - 0.508 mm
(0.010 - 0.020 in)
Oil Control (Steel Rails) 0.381 - 1.397 mm
( 0 . 0 1 5 - 0 . 0 5 5 in)
Ring Side Clearance
Compression Rings 0.074 - 0.097 mm
(0.0029 - 0.0038 in)
Oil Ring (Steel Rails) 0.185 - 0.246 mm
(0.0073 - 0.0097 in)
Ring Width
Compression Rings 4.115 - 4.369 mm
(0.162 - 0.172 in)
Oil Ring (Steel Rails) 2.591 - 2.743 mm
(0.102 - 0.108 in)
V a l v e s
Face Angle 45°
Head Diameter
Intake 48.640 - 48.900 mm
( 1 . 9 1 5 - 1 . 9 2 5 in)
Exhaust 4 1 . 1 2 3 - 4 1 . 3 7 7 mm
(1.619-1.629 in)
Length (Overall)
Intake 145.19-145.82 mm
(5.716-5.741 in)
Exhaust 145.54 - 146.18 mm
(5.730 - 5.755 in)
Lift (Zero Lash)
Intake 9.91 mm
(0.390 in)
Exhaust 10.34 mm
(0.407 in)
Valve Stem Tip Height 4 7 . 5 0 - 4 8 . 1 3 mm
( 1 . 8 7 0 - 1 . 8 9 5 in)
Stem Diameter 7.900 - 7.920 mm
(0.311 -0.312 in)
Stem-to-Guide Clearance
Intake & Exhaust 0.025 - 0.076 mm
(0.001 - 0.003 in)
Max. Allowable (Rocking Method) 0.4318 mm
(0.017 in)
J9409-83