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  1. Other Engine Swaps
    I am thinking of buying a boat with a cummins 4bt 3.9 150hp 1994. so I have some questions about the engine. is it a good engine? is there a lot of vibration? -what do I need to do to get it to 180-200hp and 350-450 torque?
  2. General Discussion
    So I recently picked up a 1985 Ford Ranger with a Mitsubishi 4d55 in it. I plan on turning the truck into like a prerunner/rock crawler kinda thing, and I was wondering if it would be worth it to put a 4bt in it, or do the work on the stock 2.3l diesel to get around 300-400hp. Would it be more...
  3. General Discussion
    So I have this 07 Ford Escape that’s dying out on me. My wife won’t let me get rid of it since it’s “her baby” but she says she’ll let me turn it into a project. I’m moving to East Texas soon and I wanna turn this thing into a mudder. Nothing super crazy thats gonna require countless of hours of...
  4. Axles & Differentials
    hi how are you guy Am new on this so hope you guys can help me, I have a 1999 TJ and want to do it diesel I have the engine already so my question is I want to do 1 ton axles what kind of axle do you guys recommend I will appreciate it thanks
  5. Performance Discussion
    I am swapping a 1989 4b into my TJ. As some will know the first Gen Cummins B engines, from 89-93 had 9mm injector holes. This led to lots of cracked heads. In 94 they switched to 7mm holes and the p7100 fuel pump. My stock head off the 4b was cracked, so I bought a second hand head from a skid...
  6. General Discussion
    Okay so Im about to tear the truck down but I found out my 4bt has an A pump. I know I can get a good running p7100 pump from a 1997 Dodge Cummins. What parts would I need to take from the pump and any other parts would i need? Throttle linkage, etc. Sorry I read a ton of threads but so...
  7. General Discussion
    Hey friends, I live in northern Montana so it is cold here 5 months of the year! I do have a engine block heater, but I wont be able to plug it in when I'm hunting or at work for 10 hours. So I think it would be essential. I was wanting to know if anyone has ever used a grid heater on their...
  8. General Discussion
    Okay so I bought a 3.9 cummins. Well I want to put it in my Supercab Ranger. But I want the 4bt to be sitting on straight axles. So recently I found an 1995 Dodge 2500 single cab short box that has a wheelbase of 118.7 inches and I believe but not sure but the dana 70 is 65.5 inches wide. The...
  9. Toyota Diesels
    Hi I am new here im not sure if this is the right place for this, so i apologize in advance if i was wrong. Im looking in to take a 4bt and the 6spd NV5600 and trying to stuff it in a 4runner with full width dana 60s. i have a done a little bit of research on parts i would need to make it...
  10. Cummins Tech Section
    Will give a quick run down on my build. Put a reconditioned 4bta from acdengines.com in my 2002 jeep TJ. Is mated to stock tranny and transfer case. (NV3550 NP231) both where gone through and look over by zumbrota bearing and gear. Also have the dinky stock axles. (Dana 30 and 35) I built this...
  11. Other Engine Swaps
    ok guys i got a 4th gen camaro that i want to swap to a 4bt. now i have a few questions i have not seen a thread on a 4th gen camaro yet always older camaros. i just want your guys input as to what i should do i have a few things i need to address before i start this project. here is a list of...
  12. General Discussion
    Okay guys I'm wanting to know what all this build is going to take to get it going in the right direction. Been wanting to do the swap for years and ready to get started. I'm wanting to know what changes will have to be made for the truck to handle the 4bt, the truck is a fully refurbished 1945...
  13. General Discussion
    Hi guys I'm about to start my yj diesel swap, I've been researching steady for a few weeks and I've come up with some questions that I just can't seem to answer. 1.) How do I tackle the fuel system? (Can I use the stock tank?, what kind of pump do I need? And with fuel lines should I use...
  14. Transmission, Adapter, Transfercase Discussion
    with the manual adapter what was the flywheel? also what was the pressure plate and disk are they chevy or what? id like to know to get a clutch for mine.
  15. Performance Discussion
    I have 2ea cummins marine 4BTA 3.9 they dont go over 1800RPM neither of them . WHat can i do. I already replace the diesel filters, Oil filters, air filters, diesel lines, turbos seems working properly. I dont think its an injection problem because isnt smoking at all. ANyone that coul help it...
  16. General Discussion
    I am getting ready to buy a used 4bt engine from this salvage yard and had some questions for any one that could help. i also am new to this engine and will be doing a swap in the future. The little info that was given to me was its 90's engine and it has i think a ford clutch housing and...
  17. Want to Buy
    Im seeking a unmolested bone stock 2003 and up 4bta p pump only it can be a Reviva or a cummins recon out of a freightliner or an breadvan :D im getting ready for my swap in the old put put :D
  18. General Discussion
    I Just bought a 1993 GMC P 3500 step van. What should I know about general maintenance and upkeep. I have never owned a Vehicle with a diesel engine before. I had Intermittent problems with power bringing it home over a 500 mile stretch. Some times it would barely do 45 MPH up a slight...
  19. Cummins Tech Section
    can you use the injectors from a 12v with the ve injection pump in a 4bt with the ve injection pump
  20. General Discussion
    BUY A TRUCK IN ARIZONA AND I CAN NOT REGISTERED IN LAS VEGAS NV WHY THE TRUCK WHEN YOU TAKE INSPECTION AND check the VIN NUMBER IS 6 CYLINDER GASOLINE AND NOW IS DIESEL 4 CYLINDERS., And I need all the paperwork where and how truck left THIS ENGINE AND WHO CHANGE THE MOTOR ...... anyone know...
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