1HZ Feul Economy

[Remydog05]

Just spent a dam long time reading the search threads I found.
80's, Hungy and 75/78/79's owners please post!
Can you post up your 1HZ figures!
Please include things that effect the figures!
Like
Is yours Turbo or not turbo??
Man or Auto??
What Revs @ 100k's? (Im thinking about 2200?)
Stock or 33's/35's?
When towing do you get much difference??

Does this sound right 700klms from the 90L tanks in a troopy with a DTS turbo??

Seems like most 1HZ are around 12-13/100klms.

[cassgazz]

I'd be rapt with 12/13l per 100 k's. I'm getting around 14-15 per 100 in my 100 series cruiser. No turbo, few mods. Roofrack, drawers, lift, rear bar, winch and bullbar. Nothing else that would add any weight.

[Troopy93]

Mine is NA 1HZ in a Troopy running 33s av over 90000km is 14.11l/100km
but this is including all 4wd trips to High Country, Walhalla,Toolangi, Tassie etc.

Best ever was 653.6km for 83.95l =12.84l/100km

Worst ever was 566.2km for 120.33l =21.25l/100km

Just put gas on it and did 618.8km for 69.47l of diesel + 25.50l gas.

Its overfuelled a bit at the moment so I have backed the injector pump off 1/16th of a turn so it's not blowing so much black crap.

If I put the 3/4 roofrack on it will cut 140km off the fuel range


2300rpm@100 kmh

Don't tow much but it knocks it about.

[The Fish]

I get just over 600ks to 90 litres or 14-15 ltrs per 100ks.

NA 1HZ
Manual
32" All Terrains
Bullbar, winch, rear bar, wheel carrier & 4" lift.

Cheers

[thelux]

I get about 800km to the 95ltr tank in my 80 series

not many mods 2 inch lift (unfortunatly)
32inch muddies
Alloy bar with winch
Manual
Rear drawers full of shit
plus some extra weight i probably forgot

[Remydog05]

Thanks Crew

Anyone got one with a Turbo?? It should by theory get better L/klm??

[howesy]

Thanks Crew

Anyone got one with a Turbo?? It should by theory get better L/klm??

I have a 75 with 1HZ with DTS turbo running 10psi boost. Gives a constant 12.5 L/100km loaded or unloaded trip or not. Trip driving I cruise at around 100 to 110 has 2 inch lift. Economy would prob. be a tad better if you reduce speed to 80 to 90 with a lift kit.

Hope this helps

[Remydog05]

Thanks mate

No more feul towing or not towing! I thought that mite be the case.

[me3@neuralfibre.com]

Mines a Turbo HZJ105 Auto

14.5 avg
17.5 w/ racks at 110km/hr to Tassie from qld
Towing van puts is around 17-19
I never get under 13

Plan is intercool, and new injectors / pump reco. See if that gets it there.

Paul

[Barno111]

1HZ cab chassis, dts turbo custom exhaust with single luckey proformance muffler, im running around the 12 pound boost, and getting around 12 to 13l too the hundred. doesnt matter what im doing, it does very much off that. its got the standard man gearbox in it, and im running 31's under her. at 100km/h im on about 2700rpm and around the 7 to 8 pound of boost. and thats only becuase of the smaller tyres.

hope that helps barno

[Remydog05]

Thanks Crew

Seems the magic 12-13 per 100 is the go.

Any comments on RPM @ 100klms?

[oldmate]

Thanks Crew

Seems the magic 12-13 per 100 is the go.

Any comments on RPM @ 100klms?

my 1991 80 series revs it's tits off. It was about 2700rpm at 110kph. so probably 2550-2600 at 100kph. with 33's it's a bit lower factoring in gearing. I do know that the speedo was accurate with 31's (according to gps)

economy is about 13-14. seems to be shitter as off late. also my pump is leaking. thanks low-sulfur diesel

roof racks can make a significant difference, if they don't have a shield on the front of it to direct wind over it. Found this out on my 60 series. infact it made a whole gears difference on hills.

[troopy94]

i got a na 1hz in 94 troopy with 33s which averages 450km out of 65 litres and sits on 1950 rpm at 100kph im thinking the diff ratios were changed by the previous owner

[Remydog05]

Sounds like better RPM than most, any idea what they changed them too?

From what I know Stock 75'2 have 4.1's diff ratio's??

[shanegtr]

I've got a 1hz 80, running on 285/75's. With an empty roof rack sitting on 110 I can count on around 15l/100. Loose the roof rack and sit on 100 and I'll do around 12.6l/100. I have been averaging around 14.33L/100 for about the past year or so, but I've just had the injectors serviced so Im starting to see the fuel consumption get a bit closer to the stock sized tyre days again. Currently I reckon if I was running stock diameter rubber I reckon I could run easily 11.5L/100.

The highest fuel consumption I've had was 19.67L/100 and that was towing a car trailer (with about 1 tonne of furniture) and a fully loaded roof rack. Poor old girl was running flat to the boards all day in 4th

[troopy94]

the mechanics ive spoken to think they are 3.7 and it matches the rpm my mates 100 series with a chev diesel runs and i know his are 3.7

[Remydog05]

MMMM

OK

On the Marks4wd site it says there 4.1's?? I didnt know there was differences, thought they were all the same.

[Troopy93]

I'm running 33s on mine and diffs are 4.11 2300rpm@100kmh on the gps

[Remydog05]

So on 35's you mite drop to about 2100rpm??

I guess it would loose some HP @ the wheels too of course. Bugger!

[Chucky]

94' with DTS turbo intercooler, fuel compensator and running 16psi.
Front,side and rear steel bars, 33" tyres. rear draws full of crap and 40lts fresh water.
Towing a camper trailer and full length roof rack got 1900km's from 265lt
thats 7.17km per lt or 13.94lt/100. This is at 95 -100km/hr
Thats going the coast road, driving along stockton and going over the great didivding range a few times as well.
Driving into sth Brisbane from bayside in peak hour, no roof rack and get between 14 ad 14.5lt/100km. And I am guilty of using the right foot too much.
I also sit at about 2500-2600 at 100km/hr. The PO did run 35's and changed the diff ratios to suit so this is why my rev's are up slightly.
By GPS my speedo is spot on, so I know my figures are good, alot of people running smaller tyres think they are getting better figures but really arn't, same goes the other way for those running larger tyres.

[DiStuRBeD]

I got a 92 75series 1hz

not turbo
Man
What Revs @ 100k's? about 2300revs or there abouts, if you go up to 110 it starts to climb and 130 is up around 2800-3000 from memory
Stock - 31x10.5 15's bridge duelers

i get between 14-15L per 100k's

run it on pure biodiesel

[Remydog05]

Thanks All,

Keep em coming, I think this will help many others with there idea of what they should be getting out of there 1HZ's

[Kramer]

HZJ105 NA running 35's and a 3" lift. 18 to 20L/100k Both tanks full I get a tad over 750km while towing the camper I am trying to get a turbo organised cause it is damn slow

The funny part is I get the same sort of fuel economy not even towing.

[ozdave]

Mine is a 1991 HZJ75. Totally stock with only 180,000 ks on the ODO. It gets about 12l / 100ks with a mixture of around town and freeway driving. Speedo is dead on by GPS. Diffs are 411s. Looking to put a turbo on to fill in the 2nd to 3rd gap.
Just as a side issue, I had a play around the forestry on Sunday and didn't feel the need for extra power. Driving around town is another story though. I haven't tried long distance soft sand yet.

[4runner2.8]

94 80 series dts turbo 3" exhaust
3" lift and 33's usual stuff like winch and draws
got 570km out of 85L on the weekend so thats 14.91L/100km thats about the best its ever got.

[whiteknight]

92 80 series, 1hz with denco turbo, running 265/70/16, empty roof rack with spotties up top, steel bullbar, 2" lift.
I get around around 1000 - 1100km from the standard tanks. works out to be around 12l/100km I think.
But in saying that depends how I drive it, last month I was really giving it some on many occasions and only got 800km's..

[Remydog05]

thanks!

Seems 12-13L to 100klm is the magic numbers!

[Canyonero 4x4]

Wow, my troopy with a 1HZ and extractors, runnin 33's is only drinkin 11L/100kms if I drive it sensibly. If I dont, or I put a box trailer full of tools on the back, I can expect to put in 12L/100kms