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Unread 07-19-2013, 02:17 PM   #1
KDStewart
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1998 ZJ 
 
Join Date: Mar 2013
Location: McCune, Kansas
Posts: 68
98 4.0 5.2 swap

I have a 98 laredo with the 4.0 in it. I've found a guy with a 97 5.2 that has been wrecked in the rear end that he is selling for 400 bucks. Assuming that the v8 and is in good condition, how hard would it be to swap it into my jeep? What all would I have to do in order for it to work? Everything I've found on here is just people bickering over whether or not to stroke out the 4.0 or swapping in a dodge engine. Thanks

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Unread 07-19-2013, 09:45 PM   #2
Jeeples
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2000 WJ 
 
Join Date: Jul 2006
Location: forum/f310/, UT
Posts: 4,501
It should be pretty straight forward since you'll have the engine, trans, mounts, wiring harnesses and ECU.

Your biggest issue may be that you're putting an older engine into a newer vehicle. Depending on your local emissions laws that may be a no-no, so I would look into before going any further.
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Unread 07-19-2013, 10:17 PM   #3
dnuccio
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1995 ZJ 
 
Join Date: Jul 2012
Location: Phoenix, AZ
Posts: 3,484
everything needs to be swapped over. motor, trans, wiring, exhaust, etc. alot of work. but if youre hell bent on doing it, it can be done. personally i would just find a good one with a 5.2 already in it.
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Unread 07-19-2013, 11:59 PM   #4
KDStewart
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1998 ZJ 
 
Join Date: Mar 2013
Location: McCune, Kansas
Posts: 68
Well, my trans is gettin ready to bite the bullet anyway, my exhaust has leaks, and there are a bunch of other things that could be fixed a lot easier with the engine out. I just figured that if it was as straight forward as, taking old out and putting new in, it would probably be worth it since I'm going to end up doing it one piece at a time anyway. As far as emissions go, I live in rural Kansas where apparently your neighbor can't be gay but you can single handedly ruin the environment and get a high five, so I don't think it will be an issue. I would love to find a good 5.2 but everyone around here is trying to get rich off of craigslist so they aren't cheap and I don't have the money to drive 300 miles in any direction to go look at a vehicle. I haven't bought anything and I have other things to pay for before I could consider buying the wrecked jeep but I'd like to know as much as I can before I spend the money on it.
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Unread 07-20-2013, 12:01 PM   #5
LunaMoona
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1993 ZJ 
 
Join Date: Aug 2010
Location: Durango, Colorado
Posts: 124
It's a lot more effort than you think. Remember, it's not going to be just a motor swap. You are going to have to swap out the motor, transmission, exhaust, ECU, TCM, both axles if you want 3.73 gears, motor mounts, transmission mounts, etc. It's better to just find a jeep with a 318 in it already.
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Unread 07-20-2013, 12:18 PM   #6
KDStewart
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1998 ZJ 
 
Join Date: Mar 2013
Location: McCune, Kansas
Posts: 68
Yea, that's what the other two said. There are no cheap 5.2's around here and I already have 3.73 gears. I willing to put in the work, I'm mostly concerned with how to do it
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