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Discussion Starter · #1 ·
Will a 1993 fuel injected engine work in my 1990 YJ as long as I swap out the intakes will everything else work?
 

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I would check on all the sensors too but deff. The intake and all stuff for the MPFI needs to be removed and swapped out for the older intake.
 

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Discussion Starter · #3 ·
What about the exhaust manifold?

Edit: Some one said a the computer too but why would I have to replace the computer too when I am changing all the stuff that the computer runs?
 

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No the head is not the same so something has to be done there, you can buy an intake for a carb. for a 4.0 but $, there is no place to mount a mech. fuel pump on a 4.0 so go to a Holley or some kind of elect. pump, less low end power with the short stroke motor.
But it will bolt up, best to put the computer from 4.0 while making the swap or if you want more power build a stroker 4.6, running a 4.0 on a carb ant that much more power than what you have.
 
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