Swappin cummins 4bt into Jeep TJ- Lookin for advice - Pirate4x4.Com : 4x4 and Off-Road Forum
 
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Old 03-27-2011, 07:30 PM   #1 (permalink)
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Swappin cummins 4bt into Jeep TJ- Lookin for advice

I've got a 2000 Wrangler 2.5L. I'm interested in swapping out the crummy AMC150 for a 4BT. As far as I know, I have an AX series trans (haven't done that homework yet) and I'm thinking I want one of the NV series transmissions. I have a general idea of everything that needs to be done to perform this but I want to make sure I'm not over looking anything. So for those of you who have done this swap, will you tell me all about the process? Everything from new parts and where to find them, how long it took, what has to be done for proper fit and finish, and how it all turned out when you were done. Any misc suggestions and advise would be great too.
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Old 03-27-2011, 07:49 PM   #2 (permalink)
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I have done this swap. You can see my build @ http://web.me.com/my96z28ss. Plus if you haven't already go to http://www.4btswaps.com.
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Old 03-27-2011, 07:49 PM   #3 (permalink)
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Thats a damn heavy motor
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Old 03-27-2011, 09:01 PM   #4 (permalink)
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Have you looked into other swaps? What kind of wheeling do you intend to do?
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Old 03-27-2011, 09:39 PM   #5 (permalink)
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X2 what my96z said. I too have a 4bt in my 98TJ, mine is on 1 tons. There are several jeep build threads over on 4btswaps.com. Karter all the info you are asking would take up several pages of replies. It would be best for you to look at some of the build threads. All the same info has been covered over on the other site.
Hey Donald hope all is well with you.
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Old 03-28-2011, 04:48 AM   #6 (permalink)
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X2 what my96z said. I too have a 4bt in my 98TJ, mine is on 1 tons. There are several jeep build threads over on 4btswaps.com. Karter all the info you are asking would take up several pages of replies. All the same info has already been covered in the build threads over on the other site.
Hey Donald hope all is well with you.
All is well here. Just finishing the Jeep again. I just rebuilt my engine and I am cleaning up all the mods from the last 4 years.

OP if you have some questions shoot me a PM and we can chat and pay a visit to 4btswaps there is a ton of info out there.
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Old 03-28-2011, 04:53 AM   #7 (permalink)
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A friend of mine has done this and has a real nice set up. He has a little web page, thedieseljeep.com. He is also a member of this forum.


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Old 03-28-2011, 08:26 PM   #8 (permalink)
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Thanks guys. Ill check out those all of the links you posted. As far as 4btswaps.com goes... I'm registered on that forum too, but somethin about that site disagrees with my computer, no matter what browser I use. But ill see if I can work that out. When it comes to the wheeling I do... none right now. I use to do some mild runs when I was in highschool but its my only vehicle so I decided itd be best to go easy on it, already had to have trans/clutch work done to it. Anyway, the idea behind this swap is fuel economy and additional power in order to climb the mountain where I live. Gotta rev it up to 3500 in 3rd just to drive 40mph and at 13mpg, its very painful at the pump.
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Old 03-28-2011, 08:42 PM   #9 (permalink)
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To my96z: I was told that the 4bt is all mechanical (fuel pump, speedo, tach, blah blah blah), but I saw on one of your pictures in your site that your pcm was hooked up. What use does it have still, ABS?
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Old 03-28-2011, 08:48 PM   #10 (permalink)
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To my96z: I was told that the 4bt is all mechanical (fuel pump, speedo, tach, blah blah blah), but I saw on one of your pictures in your site that your pcm was hooked up. What use does it have still, ABS?
I have my PCM piggy backed to a couple of sensors so my dash will work. I don't like the idea of putting aftermarket gauges. When I upgraded to the rubicon d44 my abs was removed. I am now in the process of trying to get my factory tach to work.

These guys have some cool stuff to make a TJ swap easier and faster.
www.jdjeeps.com
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Old 03-29-2011, 04:49 PM   #11 (permalink)
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Oh ok, i gotcha. Gauge cluster operation is still something i'm mulling over. I'm with you on the factory operation though. Kind of considered fabbing up a custom aluminum dash though so we'll see. Thanks for that link.
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