Thats a really good idea. You should be the first to do it.

 

I wish but i got no job and college to pay for

 

I'd rather steal Range Rover's new 4.4L turbo diesel and swap it into my Jeep. 300+hp and 30+mpg on a euro cycle. Plus the Rover is one heavy beast, so even in the Jeep you should get good numbers.

Report: 2011 Euro Range Rover to get 4.4L diesel, the ex-F-150 engine? - Autoblog

 

LS9. stupid hp, enough torque to move the world, and the better MPG in a 3100lb vette while cruising... BUT... a crate LS9 costs about as much as a Jeep does.

 

Best option for good highway mpg in a Jeep would be a diesel. By nature, they're more efficient at part load, so you can have a crap-load of power AND good mpg. Some easily removable (for off-road use) aero mods would help on the highway as well.

 

There is post in the YJ forum about doing a conversion with a Mercedes engine. I had a Mercedes with that engine and I expressed my thoughts. I think it would be a waste of money. I was verbal beat down for it, I did over state my point and that may have been part of the reason.

For the $ and hassle just buy a second car that gets the mileage. If you like a challenge and aren't concerned about money and a time line go for it.

To date there is nothing posted about the project being completed so I am not sure if it was successful. Another person who was working on it seemed near completion but there were still issues.

My issue with that motor is turbo lag. Somebody mentioned doing a swap with a VW TDI motor. Those motor don't make their power until the RPMs are built up. Not sure how ideal that is for off- roading, I guess it depends on how you wheel.

I just don't see the point in laying out all that money to rebuild or rely on a 10-30 year old motor, and then spend all the time and money to try to make it work in another vehicle just to get better mileage. If better mileage is the goal there are other vehicles you maybe want to consider.

Depending on the state you live in you could also have problems registering it.

 

search for 4bt conversion.... Cummins Turbo Diesel puts out over 350ft lbs and after tweaks etc. can easily obtain 30mpg. Few people have done it, and hell, if I had the proper working knowledge of diesels, I'd do it too.

 

What about these?

Easy Jeep VW TDI Diesel Swap | Editorials Blog & Discussion at Jp Magazine
HPA Motorsports Inc. VW TDI Powered Jeep

 

i was going along the lines of being cheap and not seeing much off road but these all seem like good ideas, but for the price of most of them motors i could go with ross and just buy one of those prius things and get like 50 mpg

 

I agree. Diesel is the way to go for power and economy. However, I wouldn't do a diesel swap for the sole purpose of gas mileage. A swap will cost you several grand. It's gonna take 10+ years if not more to recoup the cost of just the diesel swap with gas savings alone. Not to mention diesel is much more expensive than regular gas here in the US...

 

Not to mention diesel is much more expensive than regular gas here in the US...

Which is unbelievably stupid, yet is the case nonetheless.