Fuel Economy (3.1 TD Engines)

[Stu]

This topic has probably been covered a few times but I'm aiming more at people with 91 onwards Bighorns with the 3.1TD engine (4jg2). Since playing with the air intake and intercooler on Dads Irmsher, he's getting just under 700km per fill. How does this compare with a stock setup?

Cheers

[Witchdoctor]

Around town i get 580K's / 60Lt's towing 1.2 ton trailer Hwy getting just under 800K's for the same Lt's with trailer. From 3.1TD Mu.


Dave

[geeves]

There good figures. I always thought of the 3.1 bighorn as a little greedy but it is bigger than the earlier model and the 4jg2 has much better power at low revs than the 4jb1 that like to rev (by diesel standards)

[Stu]

Thanks for the replies. I know Dad's milage was worse when it was stock and was just interested to compare it. Thanks alot

[namic69]

I have a 96 Bighorn and I average 500km to 72 Ltr, I know I have a heavy boot but 700km I wish.....

[geeves]

Ive had my 2.8 down to those figures by drowning the paper air filter. Also it was struggling to get up hills in third gear that it normaly cruises in forth. When paper gets wet the fibers mat differantly and dont breath as well. Have uni filter now so always as good as new paper element and snorkle so air cleaner dosnt get wet so often.

[adrian]

i get 500-600km on a fill up, i have 3.1 with autobox, and safari snorkel (makes lots of difference to performance and consumtion) i dont drive hearvy (much of the time) but do 110km/h on motorway.

700km on a tank, i would like very much

[Shorts]

700k per tank?? Here in town, mainly 400-500k per tank. So, lots of short trips of <10kms and 4.56s = not the best mileage.

[pieter]

I have fitted a 3.1 4jg2 to my 4x4 pickup, used to get 8 km/l. Removed mechanical viscous fan and fitted electrical fan. I now do 10 km/l. Removing the fan also improved performance remarkably.

[timg]

12l/100km with a roofrack, mainly town driving in Cape town. Do you guys have bad diesel or bad traffic jams? I thought I was bad. used to have a 2.8l engine in the Bighorn, got 10.3 l/100km average

[geeves]

12l/100km is very close to 8.3km/l so your figures are very close to ours.
Round town the roof rack wont make much difference but on the highway it can make a big difference

[gecko]

bout 600km to a tank but i dont wait till its empty to fill it up so dont know exactly, definitaly runs alot better since i run injector cleaner through it and un jammed that stupid exhaust butterfly........ stupid thing (400km to a tank)

[Roger]

That's the sort of mileage I'm getting too. I thought it was a bit too much but maybe it's not. Anyway, 3rd gear off boost feels like crap. Not smooth acceleration, feels like dirty injectors which I think I'll replace before x-mas, with timing belt and ..... lots to do!

My record before the bullbar when I first got the MU was 715km without the light coming on.

[gecko]

i could proberly get 700km out of a tank but im normally passing thoughs people on the roads if you know what i mean lol

[adrian]

I got 700km out of a tank before the light came on
but then took 75L to fill it back up, where normally
when it gets to the E i would put 60L in.............

you guys should check out www.hypermiler.co.uk
(i didnt use any of the things recommended here!)

adrian