Jeep Cherokee 2000 Service Manual - page 1030
SPECIFICATIONS
ENGINE SPECIFICATIONS
ENGINE DESCRIPTION
DESCRIPTION
SPECIFICATION
Engine Type
In-line 4 Cylinder
Bore and Stroke
98.4 x 81.0 mm
(3.88 x 3.19 in.)
Displacement
2.5L (150 cu. in.)
Compression Ratio
9.1:1
Compression Pressure
Range
827 to 1,034 kPa
(120 to 150 psi)
Max. Variation Between
Cylinders
206 kPa (30 psi)
Firing Order
1–3–4–2
Lubrication
Pressure Feed–Full Flow
Filtration
Cooling System
Liquid Cooled–Forced
Circulation
Cylinder Block
Cast Iron
Crankshaft
Cast Nodular Iron
Cylinder Head
Cast Iron
Camshaft
Cast Iron
Pistons
Aluminum Alloy
Cylinder Combustion
Cavity
Double Quench
Connecting Rods
Cast Iron
CAMSHAFT
Hydraulic Tappet
Clearance
Zero Lash
Bearing Clearance
0.025 - 0.076 mm
(0.001 - 0.003 in.)
DESCRIPTION
SPECIFICATION
Bearing Journal Diameter
No. 1
51.54 - 51.56 mm
(2.029 - 2.030 in.)
No. 2
51.28 - 51.31 mm
(2.019 - 2.020 in.)
No. 3
51.03 - 51.05 mm
(2.009 - 2.010 in.)
No. 4
50.78 - 50.80 mm
(1.999 - 2.000 in.)
Base Circle Runout
(Max)
0.03 mm
(0.001 in.)
Camshaft Lobe Lift
Exhaust
6.579 mm (0.259 in.)
Intake
6.477 mm (0.255 in.)
Camshaft Duration
Intake
253.3°
Exhaust
259°
VALVES
Valve Lift
Exhaust
10.528 mm (0.4145 in.)
Intake
10.350 mm (0.4075 in.)
Intake Valve Timing
Opens
15.4° (BTDC)
Closes
58° (ABDC)
Duration
253.3°
Exhaust Valve Timing
Opens
52.8° (BBDC)
Closes
26.2° (ATDC)
Duration
259°
Valve Overlap
41.6°
Valve Lenght (Overall)
Intake
124.435 - 125.070 mm
(4.899 - 4.924 in.)
Exhaust
125.120 - 125.755 mm
(4.927 - 4.952 in.)
Valve Stem Diameter
7.899 - 7.925 mm
(0.311 - 0.312 in.)
XJ
2.5L ENGINE
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