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CUMMINS 4BT pictures.

15K views 58 replies 28 participants last post by  Boomer6spd 
#1 ·
Just finished my 4bt swap a week ago.been working on this project since thanksgiving. Thought I'd share the build on the forum. Here are just a few pictures from beginning to end. And also a short list of the major upgrades:

Cummins 4bt turbo diesel

Ax-15

Zone 4.25 combo lift

33 Federal mud tires

Smitty bilt Roof rack

Rhino lined everything

Let me know what you guys think!
 

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#9 ·
That's not bad I'd do the swap myself if I was gonna, I do fabrication and powersports repair.
I just hate the fact the 4 is more than the 6. A wrangler would never hold a 6 without some serious mods it is a 4bt and a half :) plus the torque would probably tear those small danas apart.
Nice work tho.
What did you put behind it for a trans?
 
#14 ·
As far as gas mileage. I'm getting 20 right now. Which is awesome for a lifted jeep. After I re gear should get around 25 or so. There is literally not a hill 5th won't pull. And I have no clue about getting a shop to do it. I know jdjeeps does it. And I know bruiser conversions does it. But I'm sure the price is very very High. Tons of custom work and unique pieces needed. Plus a lot of hours.
 
#15 ·
I've heard also that you need to beef up the frame when you go to the 4BT. Is that true? If so, that's going to suck

Bruiser conversions has some pretty sweet builds but like you said, not only are you paying for their handy work but for the name as well
 
#19 ·
Awesome jeep man, your my hero! Would a non turbo 4b be worth the swap in your opinion? I have access to a free one out of a old case skid steer. This has been a dream of mine for a long time, such a reliable strong motor it's not even funny. Always starts right up even when the weather is in the single digits, it's logged over 9k hours and still going strong, the rest of the machine not so much.
 
#20 ·
Thanks. I do think it could be worth it even without the turbo. But I know if I was going to put in the time and money Into it. I would go ahead and add the turbo. I've only heard of one guy who did it without the turbo. But from what I heard he was still happy with it.
 
#30 ·
Looks Great! Good Work
 
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