engine swap-4.0 97 comanche to 2.5 97 yj - JeepForum.com
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Unread 01-20-2012, 06:11 PM   #1
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1997 MJ Comanche 
Join Date: Jan 2012
Location: maribel, wisc
Posts: 1
engine swap-4.0 97 comanche to 2.5 97 yj

would like to install a rebuilt 4.0 out of my 97 comanchi to my newest purchase, a 97 yj with a bad 2.5. both have ax15 trannys and transfer cases match. question, will they bolt in without modifications, will the icu units exchange without rewiring the whole harness, will i have to change radiators. thanks for your thoughts.....

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Unread 01-20-2012, 06:18 PM   #2
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1987 YJ Wrangler 
Join Date: Mar 2008
Location: corpus christi, texas
Posts: 7,055
do you mean 87?

i have read the 4.0 won;t bolt directly to the other trans, have to change the bell housing or something but since you have the complete truck to swap from, it should be easy to do
I don't feel like working on anything, at this time.
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Unread 01-20-2012, 06:24 PM   #3
1995 Wrangler
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1995 YJ Wrangler 
Join Date: Mar 2004
Location: East-O-The Lake, Washington
Posts: 1,781
me suspects another troll may have crawled out from under a bridge.
Back Road Jeepin

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