Cummins swap discussion

[Ratbert]

A 6.7 is no bigger on the outside. a cummins engine is probably not much more than an ecodiesel either.

From what I've found the Cummins 6.7 seems to be about 7" wider and about 5" taller than our EcoDiesel. I wasn't able to find lengths since one is spec'd with a transmission and one without.

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[Gregj]

From what I've found the Cummins 6.7 seems to be about 7" wider and about 5" taller than our EcoDiesel. I wasn't able to find lengths since one is spec'd with a transmission and one without.

The 6.7 Cummins is probably twice as long as the EcoDiesel. That thing is a tight fit in a full size truck lengthwise. Also easily twice the weight. No way it is going to fit unless you take out the front seats.
Gregj

 

[Ratbert]

I’ve messed with a few diesel swaps, and the big curveballs were wiring, cooling, and keeping all the electronics happy. The Cummins can fit the Wrangler, but plan for custom mounts, transmission tweaks, and a fair bit of tuning time. I leaned on cummins insite software before to sort sensor quirks on a similar setup, and it saved me a bunch of head‑scratching while getting everything to play nice.

Which "the Cummins"?

 

[ALeeL]

I think the only Cummins that will fit in the Wrangler is the 2.8L.

I have driven one in a TJ. While you can tell that it does not have a lot of horsepower, it does have that "Cummins pull" at low rpm that I do not feel as much in the Ecodiesel. Then again, this was a much lighter TJ and a standard transmission.

 

[grimmjeeper]

I think the only Cummins that will fit in the Wrangler is the 2.8L.

I have driven one in a TJ. While you can tell that it does not have a lot of horsepower, it does have that "Cummins pull" at low rpm that I do not feel as much in the Ecodiesel. Then again, this was a much lighter TJ and a standard transmission.

The ISF series also comes in 3.8L as well. They only did the repower in the 2.8 though.

 

[AskBin]

I've seen a few people here suggest that when their Ecodiesel engine dies (or before), they might swap out for a Cummins. A few questions from someone who never swapped a diesel engine:

1) How possible is this? I mean, is this a realistic option to keep the vehicle going? OR is this going to create more problems since the Wrangler isn't built for that engine?
2) Someone suggested a total parts and labor cost of $15,000. Does that sound realistic?
3) Would that significantly prolong the life of the vehicle? I know the engine would be good after that, but would it be putting a 13 year old's heart in a meth addicts's body? Meaning, would this effort be worth it while the rest of the Jeep falls apart?

I like my 2023 and I'm already at 50K no-issues miles...but Jeep has a dubious reputation.

just put the thing in the thing and make it go broom

if you got a quote for 15k USD when a new 3.0 is about 10k USD alone... yeah may be something to consider if your keeping the car, but i think your concerns are far beyond wild dreams of cummins swapping a wrangler...

hopefully by the time my wrangler explodes the chassis is already giving me flinstone holes in the floor. For prevention and life support i think fuel addative, a stage 2 exahust lightening, and a bypass filter will give you a better shot.

frankly i have no interest in any of that, ill ls3 swap a JK and have a different vehicle to tow or daily.

TL:DR, is it posible? sure, prolly. is it worth it? idk get a quote yourself if you even can. will it last? depends on your level of roadsalt

 

[Tpsillos]

Yall have been hiding under a rock, this lady near me wheels a common rail in a jku on tons. it is a beast... rattletrap was the first one i heard of

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