what diesel should I use??? - Dodge Dakota Forum : Custom Dakota Truck Forums
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post #1 of 25 Old 04-02-2010, 06:23 PM Thread Starter
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what diesel should I use???

Ok, so I'm still fairly new to this board, and a dakota owner, I've got tons of questions that I dont know where to start. I've always wanted a quad cab truck, thats why I got the dakota, and I've always wanted a bad ass lifted, big wheels and tires truck with a diesel. Getting there but no diesel. So, what diesel should I get to put in my dakota. Keep in mind that I'd rather keep it an auto so lets review whats readily available and deside whats best for my ap.. Daily driver, 50 miles a day to and from work...

*Mercedes inline 5cyl 3 liter turbo diesel. This was my first choice since you can get a whole car for $1000 to swap all parts. There 4 speed tranny's suck though but they rev to 5000rpm, not much bottom end in them, might have problems pulling my 22ft boat.

*Cummins 4B turbo diesel. This was my second choice as its a beast. My concern is the noise and weight. Herd these can be well over 1000LBS. Not sure on rev limit, but the 6B's with a cam plate can handle almost 4000RPM's. These are expensive and hard to find down here..

*Isuzu 4B turbo diesel. Just like the cummins above, not as noisey though. Alot harder to find in these parts and alot more dough than a cummins.

*GM 6.2/6.5 turbo diesel. I think these might work out better than all listed above. Pretty cheap to get, parts are everywhere for these two engines and I found a 92 chevy with a banks turbo kit on a 6.2L for $1250. Herd these get 18-20mpg in 8000lbs trucks, should top 25mpg in a 4000lbs truck geared right. Usually weigh in somewhere between 750-1000lbs complete..

So, if you had a choice of engine to swap in, which would you use and why. If you know of any other diesel tranny combos easily found for cheap, list em. I'm shooting for more of an economy thing here. Not looking for balls to the wall power.
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post #2 of 25 Old 04-02-2010, 06:36 PM
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i used the 4bt because itrs reliable and its a cummins. its very torquey down low. but it is loud. i gate about 26mpg in a quad cab 03 dakota. making it work would be hard unless you have a 1st gen dakota.

you might want to take a look at 4btswaps.com
they have all kinds of diesel swaps but most are 4bt swaps you will more likely find better info there

Nelson
2003 quad cab dakota
engine swap
engine: cummins 4bt twin turbo'd hx35 over an hx50 planty of fueling mod
averages 25mpg
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post #3 of 25 Old 04-02-2010, 06:49 PM
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buy a different truck.
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post #4 of 25 Old 04-02-2010, 07:05 PM Thread Starter
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just not sure about the noisey part with the cummins, and they are hard to come by. Those that I've seen are like $4000 just for the motor. It is a good engine though. I saw your pics with your 4B in it. You've got the 5 speed right. I want to keep it an auto, thats a must. My car is stick and my bike is manual, so I need something to just throw in drive and go..

dodgedifferent2, if youd like to buy me one, I'd happily take it. But seriously, the part that I hate about different trucks, those with diesels, are that they are huge. Try driving a crew cab F250, even a short bed, its a pain in the ass. Why cant we get a small truck, like our dakotas with a nice lil 4cylinder turbo diesel. I got half of what I wanted, the quad cab part, just thinking bout making it a diesel now......
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post #5 of 25 Old 04-02-2010, 09:25 PM
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Originally Posted by dodgedifferent2 View Post
buy a different truck.

dont post unless your gunna be helpful.....

and the 4bt would be sick! stacks!!!

Tacoma guy
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post #6 of 25 Old 04-04-2010, 07:05 PM
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I second the notion of the site 4btswaps.com. i have learned tons from that site. not to be rude but diesels tend to be a little bit more expensive but it is worth it in the long end. you would have no trouble pulling your boat. good luck.
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post #7 of 25 Old 04-06-2010, 01:22 PM
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Ok, why not pull a diesel directly out of a Ram? most of the diesels that i see are auto, computer work would be a hell of a lot easier, i mean you have the option of a 5.9 with the 45rfe trans(4 speed) or 545rfe(5 speed), or you can go with the 6.7 with the 68rfe trans(6 speed).

Personally i would go with the 6.7L\68RFE combo, cause you get a stump puller engine tied to a well geared trans.

Thats just my 2 cents, i am not really into diesel, hope it helps.
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post #8 of 25 Old 04-06-2010, 05:17 PM
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any full size engine would be a very tight fit. i've seen it done once. the front would need to be built up to handel the weight

Nelson
2003 quad cab dakota
engine swap
engine: cummins 4bt twin turbo'd hx35 over an hx50 planty of fueling mod
averages 25mpg
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post #9 of 25 Old 04-07-2010, 10:03 AM
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in my professional opinion he isnt gonna see that much gain unless he switches to the full size engines. the largest torque level available for the 4bt3.9 is just about the same as the 5.9 gas engine. diesel swaps are cool but as far as being worth it for pulling power the 4bt isnt. a 5.9 swap would save him so much more money and he wouldnt have as much of a hassle getting it inspected
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post #10 of 25 Old 04-07-2010, 10:24 AM
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Go big or go home IMHO, so swap the biggest torquiest noisiest motor in.


Or you can cough up 38k and buy my grandpas 2008 gmc 3509 quadcab 6.6l turbo diesel dually. Ps, it's auto, quite, remote start, oh and 8700 miles!


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