mpg with 4bt in a jeep?

[DieselTweaker]

Hey guy's Im looking for some info to help a friend out he has a jeep and I've been telling him to put a 4bt in it and his is almost ready to but asked me what kind of MPG they are getting and I didnt have an answer so, Guy's what kind of MPG are you jeep guy's seeing with the conversion?

 

[Gifford]

Mpg

There was a guy on here who put the 4bt in an International Scout- 36 MPG NOT BAD! The Jeep would get at least that with "normal" tires.

 

[driverswanted]

Here's a 4bt n a CJ7.

http://messages.jeep2diesel.org/viewtopic.php?t=12

 

[DieselTweaker]

thanks for the info guy's

 

[CyberRanger]

I visited w/ a gentleman from NM who had a '79 CJ-5 w/ a 4BT & TH400 who got 32 mpg while towing his 2 ATVs.

 

[willysrule]

there is a guy that was at a local jeep show with a scrambler that had a 4bt... said he gets a solid 40 mpg if he drives it normally...

 

[WM-300]

Not a Jeep, But my 1943 Dodge Carryall, 4BTA, NV-4500, NP-205, 4. 89 ring and pinions at the end of a 3411 mile trip average was 25. 9115 mpg. My curb weight is 7300#



Paul

 

[SBertelson]

MPG w/ 4BT

An 89 YJ I did a 4bt in w/ a NV4500 ,3. 73 gears and 35" tires and was getting mid to upper 20's.

 

[Willys]

Do you have any pictures of that YJ/4bt build? Oo. Which injector pump did it have? Was it intercooled?

 

[SBertelson]

4bt in a Jeep Wrangler

Here ya go.....



http://www.burnsvilleoffroad.com/04_05.html



Rotary pump and intercooled

 

[Willys]

Wow, that is a very nice build. I've had that one bookmarked for some time. I think there is an orange YJ floating around somewhere with a 4bt as well. I have a bunch of questions to ask but we should start a new thread for that... to keep this one on topic.



The mid-to-high 20's was after the pump was turned up, correct? This was town driving? Did mileage increase during highway driving?

 

[SBertelson]

It would get about 30 on the highway if you were being nice to it, but it was sooo much fun to see the look on peoples faces when you leave a big black cloud out the tailpipe when you lay into it!