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Old 01-01-2014, 06:57 PM   #1
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3.8L Engine Swap $$$

I'm just thinking out loud here and wondering if anyone could entertain my queries.

I have an '08 JKU with 70k (runs fine/burns a bit of oil) and was wondering what it would cost me to do a straight swap for another 3.8L with low miles sometime in the future when my baby shits the bed?

I am aware that I may want to upgrade to something totally new at that point but, incase I don't, how easy would a straight swap be to have done and how much would I be looking at paying for parts & labor?

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Old 01-01-2014, 07:06 PM   #2
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Why would you want another 3.8 on a jku. 3.6 will be Walt better

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Old 01-01-2014, 07:06 PM   #3
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A friend of mine killed his 3.8 playing in the mud about a month ago. He picked up a replacement for $600 from a shop that specializes in engine swaps. He swapped it out in a garage over a couple of days without any issues.
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Old 01-01-2014, 07:10 PM   #4
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A friend of mine killed his 3.8 playing in the mud about a month ago. He picked up a replacement for $600 from a shop that specializes in engine swaps. He swapped it out in a garage over a couple of days without any issues.
Sweet. I figure getting the engine won't be too difficult since it has become such a widely popular vehicle. Glad to hear the swap isn't too crazy of a job though.
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Old 01-01-2014, 07:11 PM   #5
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A friend of mine killed his 3.8 playing in the mud about a month ago. He picked up a replacement for $600 from a shop that specializes in engine swaps. He swapped it out in a garage over a couple of days without any issues.
Agree. I see a lot of take outs on JKO/Jk freaks
Ranging from $500-$1000
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Old 01-01-2014, 07:16 PM   #6
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Why would you want another 3.8 on a jku. 3.6 will be Walt better
I have no complaints about my 3.8, not that I wouldn't want a 3.6, I just may not want to part with my rig. I may not want to trade something in perfect shape and with almost 15k into mods for something that costs 40k bone stock.

And honestly, I prefer the 07-10 interior to the newer ones. I bought my Jeep for it's rugged interior and I'm fully aware that I would not be driving fast. I'm completely comfortable with the 3.8.

Either way, I am well educated in the differences between all the JK's model years and don't know exactly what I'll do when the time comes, like I said, I'm just spitballing here.
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Old 01-01-2014, 08:20 PM   #7
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Why would you want another 3.8 on a jku. 3.6 will be Walt better
I'm not sure who Walt is or what he has to do with it, but the cost of swapping a 3.6 would make no sense at all.
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Old 01-01-2014, 08:27 PM   #8
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I'm not sure who Walt is or what he has to do with it, but the cost of swapping a 3.6 would make no sense at all.
Meant to say a lot better.
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Old 01-01-2014, 08:29 PM   #9
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Meant to say a lot better.
I know, I was joking.
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Old 01-01-2014, 08:34 PM   #10
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Meant to say a lot better.
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Old 01-01-2014, 10:17 PM   #11
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I'd just want to be sure I wasn't swapping in an oil burner. The swapping part isn't bad I'd want to be damn sure the engine was good, with no oil burning issues or a rebuild from a reliable engine builder. Granted the second choice is going to be more costly. Another option would be rebuilding the engine yourself, if you have the time and know how.
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Old 01-01-2014, 10:50 PM   #12
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Originally Posted by Hack12 View Post
I'm just thinking out loud here and wondering if anyone could entertain my queries.

I have an '08 JKU with 70k (runs fine/burns a bit of oil) and was wondering what it would cost me to do a straight swap for another 3.8L with low miles sometime in the future when my baby shits the bed?

I am aware that I may want to upgrade to something totally new at that point but, incase I don't, how easy would a straight swap be to have done and how much would I be looking at paying for parts & labor?
A much smarter move would be to trade it in for a new one if you can't afford it. If you owned yours since new, Im sure you took care of it better than the $1000 motor you are going to find somewhere with questionable maintenance. Maybe consider dropping an LS in there.
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Old 01-01-2014, 10:56 PM   #13
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A much smarter move would be to trade it in for a new one if you can't afford it. If you owned yours since new, Im sure you took care of it better than the $1000 motor you are going to find somewhere with questionable maintenance. Maybe consider dropping an LS in there.
I would love to upgrade but don't know the first thing about cost or the amount of work it would take to do so.
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Old 01-01-2014, 11:06 PM   #14
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I would love to upgrade but don't know the first thing about cost or the amount of work it would take to do so.
I believe it's easier on the pre2012s, and for a new LS I'd expect parts and labor to run about 10Kish. You can probably save some scratch if you buy a nice junkyard motor (like a totalled rear end collision GM SUV)...

Maybe give these guys a call and see what they can do for you...

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Also, I would never want to replace a problematic engine with the same engine. I'll either ride the one I have till death, or replace it with something better.
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Old 01-01-2014, 11:08 PM   #15
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The AEV hemi kit is around 5K
American Expedition Vehicles - Brute Kit, V8 HEMI, Aftermarket Jeep Conversions, Products, Wheels, Accessories and Highline Kits for Jeeps (TJ, JK, WK, XK).

Add the same amount for the motor, and the same amount again for the labor, and you have basically a new vehicle (you stated the rest of your jeep is pristine)....seems like a huge savings over a new one if everything else is great.
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Old 01-01-2014, 11:10 PM   #16
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The AEV hemi kit is around 5K American Expedition Vehicles - Brute Kit, V8 HEMI, Aftermarket Jeep Conversions, Products, Wheels, Accessories and Highline Kits for Jeeps (TJ, JK, WK, XK). Add the same amount for the motor, and the same amount again for the labor, and you have basically a new vehicle (you stated the rest of your jeep is pristine)....seems like a huge savings over a new one if everything else is great.
Great ideas for me to ponder. Thanks.
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Old 01-02-2014, 12:12 AM   #17
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yes a 3.6 would be better, but it would be far more involved and cost a whole lot more. I personally have never heard of it being done so I doubt there would be much info online. Im sure the transmission wouldnt bolt right up so you need a tranny or some sort of adapter, the wiring will be completely different, the exhaust will be completely different, intake is probably different.

plus you would need the lighted cupholders from a 2013+

with all that money spent you might as well throw in a couple grand more and do an LS/hemi swap. you would probably be let down if you spent all that time and money and didnt really get much of an improvement in power.
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Old 01-02-2014, 08:37 AM   #18
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MoTech Las Vegas! nuff said.
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Old 01-02-2014, 09:26 AM   #19
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For example ($800)

3.8 Engine, Tranny, and Rubi Transfer Case http://www.jk-forum.com/forums/showthread.php?t=293371

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