4.0 from 2001 Cherokee into 87 YJ ? - JeepForum.com
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post #1 of 4 Old 07-18-2019, 05:50 AM Thread Starter
10 Beers
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4.0 from 2001 Cherokee into 87 YJ ?

I know there are many of you who have done this. What I’m looking for is information on what you all have found to help make this project go smoother.

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post #2 of 4 Old 07-18-2019, 06:01 AM
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2000 XJ Cherokee 
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What are the details ? You can easily swap an XJ engine block into your YJ, and use the YJ engine computer. Or are you asking about a complete swap including the 2000 XJ PCM and the wire harnesses ?


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post #3 of 4 Old 07-18-2019, 07:04 AM
jason m
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Moved to YJ tech.

1993 YJ 4.0 60 Front, Rear steer 60, bolth spooled, 5.38's, 700r/241 39.5 iroks and beating it like it owes me money.

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post #4 of 4 Old 07-18-2019, 11:26 AM
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1993 YJ Wrangler 
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Originally Posted by CJ7-Tim View Post
What are the details ? You can easily swap an XJ engine block into your YJ, and use the YJ engine computer. Or are you asking about a complete swap including the 2000 XJ PCM and the wire harnesses ?
His YJ is a carbed 4.2.

Op the motor will bolt right up. Are you putting your carb system on it, swapping to a YJ fuel injected set up or putting the XJ obd2 set up in. This makes all the difference in the world. Also your BA10/5 probably isnt long for this world behind a 4.0 FI

1995 YJ. 2 inch BDS Spring lift. 1 inch shackle lift. 1.25 inch JKS Body Lift 33x12.5x15's. Engo 10,000 pound winch.

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. It started with a $200 axle, and a few thousand dollars later I was done :)
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diagnose the real issue before you start going all Obama on it - spending mad cash you'll need for other important things.

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this is also my second set of RC springs this year. I'd rather spend the money again and get something that will last.
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