engine swap-4.0 97 comanche to 2.5 97 yj - JeepForum.com
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Unread 01-20-2012, 05:11 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, 05:18 PM   #2
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1987 YJ Wrangler 
Join Date: Mar 2008
Location: corpus christi, texas
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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
Slow ride, take it easy
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Unread 01-20-2012, 05:24 PM   #3
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Location: East-O-The Lake, Washington
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me suspects another troll may have crawled out from under a bridge.
Back Road Jeepin

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