How to Rebuild a Jeep Motor

Rebuilding your Jeep's engine will be much easier if you plan ahead.

If you have experience or love working on car engines, have patience, have a garage or similar place to work and have enough room for your tools and engine parts, rebuilding your Jeep's motor should be an appropriate challenge for you. The hardest part of the project will be removing and installing the engine back into the engine compartment of your Jeep--you should not do it alone. Other than that, you need planning, organization and attention to detail.

Things You'll Need

• Engine stand Engine assembly lube Torque wrench Piston ring compressor Valve spring compressor Wrench set Ratchet and socket set Screw driver set Crowbar Hoist Engine rebuild kit

Instructions

1. Have an engine stand to work on your engine as you disassemble and assemble the block and head. And depending on how much of the work you plan on doing yourself and how much will be left to the machine shop, you might need engine assembly lube, torque wrench, piston ring compressor, valve spring compressor, wrench set, ratchet and socket set, screw driver set and crowbar.

2. Pull the engine from the Jeep using a hoist and mount it on an engine stand.

3. Remove and disassemble the engine head and cylinder block, organizing the parts on a shelf so that you know exactly the order in which each valve, piston and accessory was installed in the head and block.

4. Examine each part laid down on the shelf and look for possible damage. A close inspection may tell you a lot about the condition of the engine block, head, crankshaft and camshaft.

5. Take the engine block, head, crankshaft, camshaft, pistons and connecting rods assembly and valves to a machine shop for a thorough cleaning, inspection, cylinder honing and rectification, if necessary. The machine shop should check the engine block and head for cracks, flatness of mating surfaces and condition of valve guides.

6. Buy the engine rebuilding kit including gaskets, seals, bearings, piston rings and any other parts that need to be replaced like valves, pistons, lifters, rocker arms, valve springs and seals, according to the inspection results from the machine shop.

7. Mount the engine block on the engine stand and assemble the engine, making sure to follow the service manual instructions on torque, screw and bolt tightening sequence and order of assembly specifications; see the Tips at the bottom for more information.

8. Assemble the engine head using a valve spring compressor to install valves and accessories and install the head on the engine block.

9. Install the engine.

Tips & Warnings

• You can buy a service manual for your particular vehicle at most auto parts stores, or consult one for free at most local public libraries.

• It is important to follow torque and lubrication procedures recommended by the engine manufacturer, since every component torque and tightening sequence varies according to engine make and model. These specifications are listed in the engine service manual.