Manifold Swap Question

[martin809]

I searched and could not find the answer to my question.

I have swapped a 99 intake manifold in my 92 Comanche. I don't believe the power steering pump res or bracket are going to work, is this correct? I am guessing I need the bracket and res out of a 99 Cherokee.

 

Any help is appreciated for the Comanche gurus :bowdown:

 

[benjy_26]

Any bracket and pump out of a 96 and up 4.0 will work. I used one out of a 96 XJ when I upgraded my ZJ.

[martin809]

Thanks benjy_26. When I did my ZJ I didn't have to change anything. That's why I thought the same for my MJ, but I was wrong.

[HOrnbrod]

Any bracket and pump out of a 96 and up 4.0 will work. I used one out of a 96 XJ when I upgraded my ZJ.

 

Correct. I used the pump bracketry from a 01 XJ and the pump and res from an 04 Wrangler to match the increased pressure requirements required for the 98 ZJ steering quick steering gear box I also installed at the time. Much neater setup.

 

Good writeup here:  http://mallcrawlin.com/forum/showthread.php?6355-4-0L-99-intake-manifold-swap-with-REAL-DYNO-NUMBERS!

[benjy_26]

Thanks benjy_26. When I did my ZJ I didn't have to change anything. That's why I thought the same for my MJ, but I was wrong.

What year is your ZJ?

[martin809]

My ZJ is a 97.       3 in lift on 30's

Any Bracket from a 96 up will work correct? Does it matter ZJ or XJ, A quick search and they look like the same bracket.

[benjy_26]

Ah... that's why you didnt need to swap anything on your ZJ. Yeah, the ZJ or XJ bracket wil work fine.

[schardein]

I've done this swap several times.  The answers above on the P/S bracket are correct.  It makes things easier to get the pump also, although I've bought just the bracket and re-used the old pump which requires drilling out the threads (not a big deal).

 

The P/S bracket can be considered an upgrade in itself IMO, it is much simpler in design than the earlier setup, and MUCH easier to adjust belt tension.

 

While not necessary, I've started removing the pressed in vacuum line hookup that is in the rear most location, then drilling and tapping it for 1/4" pipe threads.  You can then mount your air intake temp sensor to that location.  This keeps it as close as possible to the original location on the original manifold... and allows you to use the later model PCV tube and keep it going to the factory location on the late model manifold (which is often used for the intake air temp during swaps...).  Not necessary, but the little extra work makes for a super clean install.

 

For those that haven't done it, the manifold is a bolt on, but a few details need addressed, main thing being the P/S bracket, sorting out the vacuum lines,  modifying the bracket that holds the fuel line(s) to the manifold, and finally drilling/tapping for the air intake temp sensor (having done it for my 3rd swap, this is the only way I would do it in the future).