Are diesel swaps still a good idea? Will diesel still be relevant in 30 years?
I've wanted a Jeep Comanche for a really long time. I found this article today:
https://www.dieselworldmag.com/featu...jeep-comanche/
A guy swapped a 3.9 Cummins engine into a Comanche. The build included a 4.5" lift and 33" tires. He recorded an all time low of 24 mpg, and a high of 36 mpg. Would it be within reason to get 40 mpg or more with this engine? I think that is reasonable if you drive like an ecomodder and perhaps built the truck with fuel economy in mind. Like putting in a NV3500 transmission in lieu of the NV 4500, using a tonneau, etc...
The fuel savings from this setup would make the cost of the build and the time invested well worth it. With the current cost of diesel fuel, it would just about halve my yearly fuel cost. edit: Not to mention having an awesome custom off road vehicle with great fuel economy.