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Old 01-23-2009, 06:17 PM   #1
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2004 Engine in a 97?

Hey guys, I'm new to the whole aspect of asking about this stuff online but being a little pressed for money right now has made me reconsider.

Okay ive got a 97 wrangler TJ 4 cylinder and i blew the engine at 190k miles on it. now ive found a 2004 4 cylinder engine for a cheap price, and i need to know if it will work before i buy it. any help??

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Old 01-23-2009, 08:44 PM   #2
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upgrade to a 6 while your in there.......you will be much happier......i think the 04 will be a 2.4l and be different

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Old 01-23-2009, 08:45 PM   #3
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Just going to bump because I am not 100% sure but I would say the engines are the same although you may have to use your intake and a few other thing from your original engine.But I think the engines are the same.But like I said with the 4cyl I am not 100% sure of that.
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Old 01-23-2009, 08:54 PM   #4
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flattie tj is correct the 04 is a 2.4L so i am really not sure if it will swap for the 2.5!!!
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Old 01-23-2009, 08:57 PM   #5
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We do not have very many Wranglers in my town and no 4 bangers at all.huhhh are the 2.4 and 2.5 the same other than the bore???????
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Old 01-24-2009, 12:16 PM   #6
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well the engines wiring and ignition system will be different
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Old 01-24-2009, 01:22 PM   #7
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If your already going through all the work why not put a 6 or bigger in? If you swap in a Chevy 5.3 out of a 1500 series, you will get probably about the same mpg, but with more than double the power your I4 made.
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Old 01-24-2009, 03:29 PM   #8
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swapping in a chevy is not as simple as swapping a straight six.. the 4 bangers tranny will be to weak for that motor
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Old 01-24-2009, 10:19 PM   #9
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That is why you would use the 4L60 or 700R4 tranny and NOT the one from the 4 cyl!!!!
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Old 01-24-2009, 10:29 PM   #10
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You will mostly likley need to use the ECU from the 04 engine and im not sure whether or not the wiring harnesses are compatable you may need to change that as well.
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Old 01-25-2009, 12:53 AM   #11
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You will mostly likley need to use the ECU from the 04 engine and im not sure whether or not the wiring harnesses are compatable you may need to change that as well.
So you are confirming that the newer 2.4L and the older 2.5L are the same engine???? I mean I am just not familiar with the 4 cylinder wranglers enough to say.I did look at both engines online and they look totally different but I think it is in part because of the way the intake is all plastic and wraps up over the engine now that make it look so much different but if they are like most in the past they are the same block with a smaller bore.They down size the piston and bore and make up for it with a more efficient fuel delivery system(small cc but more hp in the long run).Like going from a 4.2 to the 4.0!!!That is just a guess though!!!

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