any one swapped a early xj 4.0 into a 2.5 yj - JeepForum.com
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Unread 09-03-2011, 06:10 AM   #1
bft89yj
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1989 YJ Wrangler 
 
Join Date: Jan 2011
Location: beaufort, SC
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any one swapped a early xj 4.0 into a 2.5 yj

i picked up an 88 xj for a hundred bucks it hasnt ran for a year but the guy i bought it from says it ran fine when he parked it. he parked it because the ac went out in it. so im trying to figure out what to do with it. im thinking about removing the engine and putting it in my yj. i know i need a new tranny but what else may have to be done to make the engine work. the wiring isnt an issue im and electrician and have factory service manuals for both vehicles. im picking it up tomorrow so i havent even tried to start it yet.

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Unread 09-06-2011, 10:26 AM   #2
Que89YJ
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1989 YJ Wrangler 
 
Join Date: Apr 2008
Location: Detroit, Michigan
Posts: 14,547
You might have the lucky lotto card and got the good axles with it too. Read this:

http://www.jedi.com/obiwan/jeep/d44swap.html
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Unread 09-06-2011, 10:59 AM   #3
notmyj
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1992 YJ Wrangler 
 
Join Date: Sep 2006
Location: Pittsburgh, Pennsylvania
Posts: 2,465
This is not a bolt in swap. You will need to get engine mount brackets for a 4.0 YJ. Cut the current brackets off, and relocate and weld in the new brackets for the 4.0. Also, if this is a renix engine I would pass on it, or scrap it to make a couple bucks. Not sure what year the xj got the 4.0HO...
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