4WDrive Magazine
How to tear down a junkyard engine and see what parts can be salvaged for the rebuild. Ours is a 1998 5.9L Dodge Magnum engine which, once rebuilt, will drop into a '99 Dodge Dakota replacing the existing 5.2L. Throughout the tear down we do a little engine CSI (crime scene investigation) to see how badly the engine was mistreated and find out what parts may have been replaced or modified. We've listed the steps in the timeline so you can jump to the appropriate section to follow along during your own teardown.
5.9L Dodge Magnum Engine Teardown
1:40 Removing all accessories and harnesses
2:00 Front assembly
3:22 Tips for removing stubborn hoses
4:18 Fan and fan clutch
5:01 Intake manifold
6:44 Harmonic balancer
7:45 Draining fluids and clean-up tips
8:10 Removing valve covers
8:50 Dissassembling the heads
11:36 Removing the cylinder heads
12:24 Inspecting cylinders
15:30 Assessing the roller lifters
16:28 Removing and inspecting the oil pan
16:58 Checking for previous stampings
18:22 Tips on stamping for proper reassembly
18:46 Tearing apart the bottom of the engine, checking connecting rods and bearings
19:50 Cam shaft removal and inspection
20:55 Crankshaft
23:33 Main crank journals and main thrust bearing
24:13 Cylinder bore
25:12 Conclusions and follow-up strategy
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