I--4 , I----6 Question(S)

[kazam]

Greetings,

 

I may have  to really take the 4.0L High Output engine from my 1991 XJ.

 

The '87 Comanche I maintain would receive that 4.0 engine.

 

So how do I get that work done?

 

Specifics like: How to build a cradle for the engine(s)--

Remember what parts of the wiring harness--?--

 

 

 I am a mechanic who has not completed this such

project before, so I am a novice with talent & tools about this project.

 

Remember to disconnect the radiator(:

 

-- 'Save those hoses' ( out of habbit or must I for the new installation? ;)

 

The alternator, A/C compressor, radiator, ECU? from the XJ must be maintained in the transition?.

 

 

Thanks for the help, in advance.

[Pete M]

what engine is in the MJ?

[Eagle]

An XJ is identical to an MJ in the engine compartment. To accomplish this swap, you would move everything over from the XJ into the MJ. There is no need to fabricate a "cradle" for the 4.0L engine -- the engine mounts will bolt directly to the MJ frame rails.

 

You will use the XJ radiator, and the sheet metal surrounding the radiator. It's very different from the MJ radiator.