4bt Cummins swap

Aye what all do i need for a 4bt cummins swap in my 2004 5 speed.

 

Funny you ask @madmax700r is doing that exact swap right now.

 

Do you have the engine? You need one of those.

 

AYE !!! Your gonna need a 4bt Cummins engine. That's probably a good place to start.

Oh and maybe some diesel fuel. I don't think it would be to happy running gas

-Nuts & bolts large selection.
- metric and standard wrenches/ sockets
- your gonna need a truck to put that engine in. I think this is a must.
- garage. Preferably one that's not your parents.
- coming into a form started with Aye. My bad you already got this.
- by the sounds of it more knowledge of diesel engines. I'm thinking your just hoping you will be able to dump that 4bt into your 2.7L and have it bolt up to the tranny and be able to drive down the road and be on your merry way.

WRONG.

GO READ

Your truck weighs close to 3290Lb and the 4BT weights roughly 780 lbt hmmmmm...

 

I think what @madmax700r did was buy the whole front clip, transmission included, from one of those bread/delivery trucks. It stil had the frame attached from what I remember.

I very much doubt an AISIN R150F to Cummings 4BT bellhousing converter exists. Would be much too difficult to adapt it to the existing R150F.

 

I am doing this swap.
@BartMaster1234 is correct. I purchased my 4bt as an entire frame off front clip. Cooling package, engine, transmission were all there.

You can actually adapt the r150f to the 4bt with a conversion kit for an AX15 jeep trans. But you would need to swap input shafts and a few other components. But I HIGHLY doubt it will hand he torque of the 4bt for every long seeing as how they aren’t rated for that torque.

As far as what all you need is a very very bland question. Need to know what you plan on doing with the truck before that question can be answered or even partly answered for that matter.

Any questions about it tho hit me up. Mine is almost ready to test fire in my truck soon as I get the turbos finished.

 

How much of a horsepower boost are you looking at with the new turbos?

 

Preciate it! @madmax700r

 

The 4bt would destroy the r150f.
And ya madmax did get the hole clip engine and tranny.

 

Well depends. I’m waiting to order my holset hx30w until I get my tax return. Then I’ll only go twins if I can fit them in there with little modifications/ keep the hood.
I’m going to be running the hx30w by itself most likely. And with the pump turned up all the way and 50hp over injectors I should be around 150hp/350trq. Hopefully. When I pull the engine to paint it I’m going to tear it down and put H-beam rods in it a main girdle and studs all through the motor along with 60lb valve springs but that’s down the road a while.
Thing needs to move before that happens.

 

Found a guy in Oregon awhile back that’s running one in a 4Runner with the r150f and it held up for 30k miles and counting but that’s because he left his engine completely stock and doesn’t do anything but daily it with a easy foot.

Edit: @Toyo_Taco04 what do you plan to do with your truck? What’s the interest in a 4bt for you?

 

If all you are after is 150hp/350trq a vw tdi swap would be easier and much lighter. With some aftermarket injectors and a custom tune a vw TDI can make those numbers fairly easily and weigh less then half of a 4bt. I'm swapping in a vw 1.9td AAZ that's making close to 150hp/250ft-lbs into my taco pretty soon. I'm not expecting it to be the fastest truck in the world but the torque curve will be sweet, should get mid 30's mpg and serve its purpose well. I'll be running 35's with 5.29 gears so it doesn't need to go super fast anyways.

 

I'll start by saying I know almost nothing about a diesel swap, other than it seems kinda cool, and if I do one it won't be for a long time.

Those VW #s look pretty close to stock 3.4 #s with a slight advanage to torque with the diesel?

The big appeal for me is the added mpg, not that it'd be a huge savings at the pump but for the increased flexibility that comes with the added range capabilities....if it's realistic to expect an almost double increase in mpg?

Any good sources or threads you guys know of that are informative yet inclusive to teach a noob to diesel to start the long learning process?

 

I'm gonna be building mine pretty soon. Ill make a log of it. I had the motor left over from my Suzuki samurai and found a sick taco without a drivetrain so it made sense for me. I rebuilt the motor last year and it's got a ton of performance parts and would have been too much of a loss to sell it. I've got most of the parts on order. Should start building withing the next couple of weeks once everything arrives. It's a pretty common swap for samurais but not too common for Taco's.

 

Right on... I'll keep an eye out and follow along

 

Hey Max, do you have a build thread for this project?

 

That is true but that’s a lot more electrical I don’t want in my crawler or want to deal with. And I highly doubt the vw is going to be able to hold up to the twin turbo set up I’m going to be running.

https://www.tacomaworld.com/threads/98-taco-1-ton-cummins.524745/page-10#post-17220153

 

Yeah I wasn't specifically referencing your build. you are obviously going for more power then stock on a 4bt. I was saying in general, if someone only wants the power numbers that are available from a stock 4bt a tdi can make those numbers and save 1/2 the weight plus deliver better fuel efficiency. they are also cheaper and a lot easier to find. As for the electronics they can be modified to run on mechanical pumps fairly easily and still get similar power/mpg as computer controlled. That being said at those power levels a 4bt will be more reliable. It all depends what someone wants from their build and how much effort they want to put into it.

 

Definitely agree. Just don’t know what the OP wants to do with his truck.

 

A lot of money and patience! And I mean, A LOT of those things.

Not trying to be a downer, but why the heck would you want an engine with this much capability in a vehicle that won't even come close to maximizing the mill's potential? Just to be cool? Fuel mileage? Blow black smoke? What? Your tow and haul ratings won't increase with it at all, your Tacoma is still rated at like 980# carrying capacity and 3500# tow rating. The frame and chassis isn't designed to carry more than that safely. Diesel fuel itself is still about 40 cents more per gallon (around here) than gas and so realistically, you probably won't save that much on fuel, even though the 4BT sips fuel compared to V8 and even inline 6 Cummins diesels.

You'd be better off supercharging your 2.7 if more power is what you're after for a fraction of the cost. I only say all this based on my experience with diesel engines. I have a 1997 F-250 Heavy Duty 7.3 Powerstroke and it's a great hauler, but it stops there. They're loud, smelly, and parts are ridiculously expensive! Not to mention my particular engine takes 15 quart oil changes and so you gotta figure this in if you change your own oil, you also can't just buy any oil for them like most gas engines, they require diesel specific oil. Although I'm certain the 4BT has significantly less sump capacity as the inline 6 Cummins have between 11-12 quarts. My 7.3 is at home hauling a heavy load but as a daily driver, it's dreadful, I've had to DD it when the Tacoma is getting worked on or the wife is driving it. In my book, diesels are a workhorse, gas is for everything else.