Ok, first off I know you are saying why would you go from a 4.0 to a 5.2, and not a 5.9? Well the answer is because I already had a 5.2 Jeep and had been trying to hunt down a wrecked 5.9 for the past 6 months.
I am already pretty far into this but there is some question with what people are getting into when doing a swap like this.
So I have two completely running Jeeps. My built 98 ZJ with a 4.0 and the donor 5.2 stock. Objective, tear out necessary components, redo parts of motor and put in mine.
Compression tested out well, so I did not replace any rings.
Heads were tested for cracks and warpage, all systems go.
The following parts have been replaced so far.
-Rear Main Seal
-Waterpump
-Intake Manifold Bolts (One broke inside one of the heads)
-Oil Pan gasket
-Lower intake
-Upper intake
-Head Gaskets
-Thermostat
-Thermostat gasket
-Waterpump hoses
-Spark Plugs
-Distributor Cap
-Distributor Rotor
-Fuel injector O-Rings
-Exhaust manifold gaskets
All rusty parts, like valve covers and oil pan were wire wheeled down, and repainted with high temp paint.
I am already pretty far into this but there is some question with what people are getting into when doing a swap like this.
So I have two completely running Jeeps. My built 98 ZJ with a 4.0 and the donor 5.2 stock. Objective, tear out necessary components, redo parts of motor and put in mine.
Compression tested out well, so I did not replace any rings.
Heads were tested for cracks and warpage, all systems go.
The following parts have been replaced so far.
-Rear Main Seal
-Waterpump
-Intake Manifold Bolts (One broke inside one of the heads)
-Oil Pan gasket
-Lower intake
-Upper intake
-Head Gaskets
-Thermostat
-Thermostat gasket
-Waterpump hoses
-Spark Plugs
-Distributor Cap
-Distributor Rotor
-Fuel injector O-Rings
-Exhaust manifold gaskets
All rusty parts, like valve covers and oil pan were wire wheeled down, and repainted with high temp paint.