5.9L 12V Performance Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with P7100 Injection Pumps Related to Performance and Longevity

4BT

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Old 12-26-2009 | 01:55 PM
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ok someone suggested a 4BT build when I was asking which engine I should build. Do all the 2nd gen 12Vs performance goodies apply about the same to the 4BT or what would be different?

I am now just researching what engine would be one of the best options to put in my Bronco since the future plans are still very far in the future.

Thanks in advance.
 
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Old 12-26-2009 | 02:00 PM
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Not to direct you from this great site, but you may want to check out Cummins 4BT & Diesel Conversions Forums - Powered by vBulletin. These guys live, eat and breathe 4-BT engines/swaps and will be able to answer any questions about them.
 
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Old 12-26-2009 | 02:19 PM
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thanks. I just wondered if anyone on here would be able to just say yay or nay. oh well new site means new people and thats always fun.
 
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Old 12-26-2009 | 06:36 PM
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No problem. The way I understand it, the 4BT's can be had with either a VE-style rotary pump and a few can be found with the in line P-pump. I'm guessing the same mods that work for the 5.9 (injectors, timing, etc) would work for the 4 cyl, though I hear the 4-BT can get high EGT's a bit easier per mod.

I was going to (still want to) do a 4-BT project someday. Was told that the original turbo off my '03 is highly sought after by the modded 4-BT crowd. Maybe some day I'll get a chance to see for my self.
 
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Old 12-26-2009 | 06:42 PM
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Lots of good swap info on that site. Not just the 4BT either.
 
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Old 12-26-2009 | 07:29 PM
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Theres a fella somewhere around me that tuned one to 496hp. LReiff on CompD
 
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Old 12-26-2009 | 09:08 PM
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u went from a 1000hp common rail to a 4bt? i would stick with the 12valve or common rail.
 
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Old 12-27-2009 | 07:55 PM
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Originally Posted by monster12valve
u went from a 1000hp common rail to a 4bt? i would stick with the 12valve or common rail.
I'm now back in the process of research for the "perfect" diesel for my Bronco build and a 4BT was mentioned and I had heard about some pretty stout 4bts being built and still getting really good mileage. So now I am just back at the drawing board for which diesel engine would fit best.

I know Im back and forth on what to do. I have just been really bored the last few days and I have just been thinking about what everyone has mentioned.

I have tossed around a 4bt a 12V or a CR. Now I know that if I was going to build a big hp rig it would be a CR and would never be turned up high unless I was going to a dyno event. the 4bt wouldnt be much of the higher hp rig but more of a big mpg rig with some good power.

I guess I am just trying to get some good info on what to do for each idea. And then which engine would be the best for my bronco project of the future.
 
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Old 12-28-2009 | 04:03 PM
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do you want a cummins? buddy has a 1994 bronco with a 7.3l powerjoke.... runs like a raped date and he said the swap wasnt too bad...(cost wise)
 
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Old 12-28-2009 | 05:21 PM
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Originally Posted by monster12valve
do you want a cummins? buddy has a 1994 bronco with a 7.3l powerjoke.... runs like a raped date and he said the swap wasnt too bad...(cost wise)
well that wouldnt be too bad either. I dont know really. I just know I want a diesel in it. I guess its now back in the stage of I know I want a diesel and not a dmax. ha

the 7.3 I want to build though is gonna be in a 3/4 or 1 ton with twin compounds and alot of fuel. I want to try and break 4 digits with it because a V8 would be the only way to actually do twin compounds and it just sounds BAMF!
 


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