Dodge 2000 DURANGO Service Manual page 587

9 - 78 4.7L ENGINE
CLEANING AND INSPECTION (Continued)
Fig. 142 Measuring Clearance Over Rotors
1 – STRAIGHT EDGE
2 – FEELER GAUGE
Fig. 143 Bore Gauge—Typical
1 – FRONT
2 – BORE GAUGE
3 – CYLINDER BORE
4 – 49.5 MM
(1–15/16 in)
(2) Measure the inside diameter of the cylinder
bore at three levels below top of bore. Start perpen-
dicular (across or at 90 degrees) to the axis of the
crankshaft and then take two additional reading.
(3) Measure the cylinder bore diameter crosswise
to the cylinder block near the top of the bore. Repeat
the measurement near the middle of the bore, then
repeat the measurement near the bottom of the bore.
(4) Determine taper by subtracting the smaller
diameter from the larger diameter.
(5) Rotate measuring device 90° and repeat steps
above.
(6) Determine out-of-roundness by comparing the
difference between each measurement.
(7) If cylinder bore taper does not exceed 0.025
mm (0.001 inch) and out-of-roundness does not
exceed 0.025 mm (0.001 inch), the cylinder bore can
be honed. If the cylinder bore taper or out- of-round
condition exceeds these maximum limits, the cylinder
block must be replaced. A slight amount of taper
always exists in the cylinder bore after the engine
has been in use for a period of time.
SPECIFICATIONS
4.7L ENGINE
DESCRIPTION
GENERAL SPECIFICATIONS
Engine Type
Displacement
Bore
Stroke
Compression Ratio
Horsepower
Torque
Lead Cylinder
Firing Order
CYLINDER BLOCK
Cylinder Block
Bore Diameter
Out of Round (MAX)
Taper (MAX)
Material
Diameter
Weight
Ring Groove Diameter
No. 1
No. 2
SPECIFICATION
90° SOHC V-8 16-Valve
4.7 Liters / 4701cc
(287 Cubic Inches)
93.0 mm (3.66 in.)
86.5 mm (3.40 in.)
9.0:1
235 BHP @ 4800 RPM
295 LB-FT @ 3200 RPM
#1 Left Bank
1-8-4-3-6-5-7-2
Cast Iron
93.010 .0075 mm
(3.6619 0.0003 in.)
0.076 mm (0.003 in.)
0.051 mm (0.002 in.)
PISTONS
Aluminum Alloy
92.975 mm (3.6605 in.)
367.5 grams (12.96 oz)
83.73 - 83.97 mm
(3.296 - 3.269 in.)
82.833 - 83.033 mm
(3.261 - 3.310 in.)
DN