TJ 97 2.5 engine swap - JeepForum.com
 
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post #1 of 6 Old 01-24-2016, 05:19 PM Thread Starter
LoveRjeep
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TJ 97 2.5 engine swap

We have a 97 TJ 2.5 and want to swap the engine from our old 96 XJ 4.0 HO. Any advice or knowledge on this possibility?

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post #2 of 6 Old 01-24-2016, 08:09 PM
lander2312
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I looked into this swap a few months ago and it just didn't seem worth it. To go through the whole deal of the swap you should just do the Chevy small block swap. 30lbs difference in weight yet a lot more HP and torque. Same amount if work. In tje end it wasn't worth the effort so I will ride my 2.5 till it dies. Most recommend selling the jeep and buying a 4.0 Jeep from the factory.

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post #3 of 6 Old 01-24-2016, 08:11 PM
lander2312
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Oh and if you havnt re-geared...do it. I went from factory 4.10 to 4.88. Breathing I ever did. Only regret was not going 5.13....lol

"People sleep peaceably in their beds at night only because rough men stand ready to do violence on their behalf."

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post #4 of 6 Old 01-24-2016, 09:30 PM
Mousejockey
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Possible? Yes
Worth it? Depends on why your making the swap.

Motor mount brackets need cut off the frame and moved, electrical needs to be converted/spliced, emission laws need to be with

What are the reasons for the swap ? What are your goals?
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post #5 of 6 Old 01-24-2016, 09:56 PM
rda616
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Quote:
Originally Posted by lander2312
I looked into this swap a few months ago and it just didn't seem worth it. To go through the whole deal of the swap you should just do the Chevy small block swap. 30lbs difference in weight yet a lot more HP and torque. Same amount if work. In tje end it wasn't worth the effort so I will ride my 2.5 till it dies. Most recommend selling the jeep and buying a 4.0 Jeep from the factory.
The small block Chevy was popular in old CJ and YJ wranglers, but not really in the TJ. An LS motor is a fairly popular swap, but costly vs a magnum V8 which is the cheapest and easiest swap. My next V8 I swap into a wrangler will be a hemi.
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post #6 of 6 Old 01-24-2016, 09:58 PM
rda616
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Quote:
Originally Posted by LoveRjeep
We have a 97 TJ 2.5 and want to swap the engine from our old 96 XJ 4.0 HO. Any advice or knowledge on this possibility?
You will need quite a few things to do this swap and it would be easier to do if the donor was a 97 TJ.
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