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Posted: Fri Nov 04, 2005 11:59 pm
by walker
This is sad but true.

-3.5 Carby
-1977 - 35" tyres, standard diff ratio
-Aspiration-air I hope
-Decided to try some P76 jets in the WW carby
-On a recent offroad trip with plenty of steep hils & winching -39l/100km :cry:
-with the standard jets - 26l/100km

Posted: Sat Nov 05, 2005 2:06 am
by Hardy
'99 RR 4.0 V8 - 'Thor' manifold, BOSCH elec.
UNICHIP (dyno'd)
2.25" Straight through, Std cats.
32" tyres, 4.1 diffs
Bullbar, no std air dam. 2x Basic bars across roof (bit noisy)

Nearly always run PULP.

Average - 22-23 litres per 100k (around town)
Freeway - 14-15 litres per 100k
Best - 11.8 litres per 100k (downhill from LCMP to Briz)
Worst - 49 litres per 100k (Ormeau)

I tried a direct air feed from bullbar to airbox once. Couldn't convincingly state it made a huge difference, maybe 1 or 2 litre per 100k on freeway only.

I reckon tyre/diff combo is definatley throwing things out.
Apparently this model runs 2x speedo pick-ups - front wheel and gearbox?
Once did comaparo over UHF on freeway with bog stock DiscoII - an indicated 90kph was actually 100kph. I'm hoping 33"s will help (good excuse to go bigger anyway)

Posted: Sun Nov 06, 2005 9:11 am
by A*D*A*M
93 Rangie
3.9 with chip from Graham Cooper (don't know what brand, was on it when I got it)
Snorkel
free flow exhaust
Standard ratio 265/75 tyres

Approx 18 litres/100 km to work and back
approx 16 litres/100 km on highway
Terrible in sand 25+ litres/100km

distances at best guess, tyres approx 8% more rolling diameter than stock tyres but My maths is not always spot-on.

With 245/70 tyres economy was
14-15 litres / 100 km highway
16-17 litres / 100km around town

Posted: Wed Nov 09, 2005 6:47 pm
by bushy555
1993 200tdi, JDM modified turbo, R380, 3.54 diffs:
With 1:1.001 transfer: (100kph @ 1250 odd rpm)
35" BFG tyres --> 10.2 l/100k
35" Thornbirds --> ~12 l/100k

With 1:1.2 transfer: (100kph @ 1500 odd rpm)
35" BFG tyres --> ~18? l/100k

RPM just taken from tacho. Have never been bothered to work it out correctly. Used to be terrific on fuel. Used to get 700 odd klicks outta 70 litres pushing 35's. Now I'm lucky to get 380-400 out of a tank. Needs a complete overhaul. New rings, injectors and tune up of the fuel pump.

Posted: Wed Nov 09, 2005 10:54 pm
by ISUZUROVER
bushy555 wrote:1993 200tdi, JDM modified turbo, R380, 3.54 diffs:
With 1:1.001 transfer: (100kph @ 1250 odd rpm)
35" BFG tyres --> 10.2 l/100k
35" Thornbirds --> ~12 l/100k

With 1:1.2 transfer: (100kph @ 1500 odd rpm)
35" BFG tyres --> ~18? l/100k

RPM just taken from tacho. Have never been bothered to work it out correctly. Used to be terrific on fuel. Used to get 700 odd klicks outta 70 litres pushing 35's. Now I'm lucky to get 380-400 out of a tank. Needs a complete overhaul. New rings, injectors and tune up of the fuel pump.
Is that in a bush-rangie? Any idea what the weight is?

Posted: Thu Nov 10, 2005 7:53 am
by zuffen
My Dakar with Toyota 1UZ engine tips the scales at 1850kg with about 50 litres of fuel, spare wheel and 12.5x33 tyres. Heavier than you expect.

Posted: Thu Nov 10, 2005 8:41 am
by D110V8D
1984 Rangie: 3.5 carby

35 Et's

Standard ratio diffs.

22-25 litres per 100 k's.
---------------------------------------------------
1995 Defender 6.5 diesel.

R380 gearbox / 1.002 Rangie transfer case

32" MT's

12-13.5 litres per 100 k's.

Posted: Sat Dec 03, 2005 7:57 am
by bushy555
ISUZUROVER wrote: Is that in a bush-rangie? Any idea what the weight is?
Yep, around 2050kg empty. A heavy 'lightweight'

Posted: Sat Dec 03, 2005 9:46 am
by defender kev
94 300tdi Defender 2.5" zorst from turbo back,fuel pump tweaked
7.50r16 10l per 100k highway 11l per 100k city
34" Swampers 12l per 100k highway 13.5l per 100k city
Offroad 14-20l

Posted: Sun Dec 04, 2005 7:43 am
by stage1slave
82 3.9 isuzu stage1 station wagon
extractors, 3" exhaust
ford auto gearbox
235/85R16 on 7" alloys

around 13l/100km no matter if it's highway,4wding or towing a 1.2 tonne van.

Posted: Fri Dec 09, 2005 10:06 am
by james feeney
event preped Td5 90,

36x12.5x15 (true 35's)

disco 4 spd auto

transfer 1:1.66??? not sure

1900kgs

22miles per gallon on road or thrashed off road

13ltrs/100kms I think?

Posted: Fri Dec 09, 2005 11:11 am
by Maggot4x4
1985 RR with 3.9L 4BD1, LT85, 35" BFG, 4.1 GQ's,

Approx 1400km to the tank to where I'm game let it drop to(110-115L)

1984 RR with 350 chev, TF727, 35's, 3.56.

Approx 500km on the Highway, 250km off road, 100km for heavy beach work. Standard tank.

fuel usage

Posted: Sun Dec 11, 2005 9:17 am
by amtravic1
89 Rangie 3.5.
No efi, edelbrock manifold and quadrajet carby. Ford el thermo fans. 450,000 + kms.
ARB bar and winch, arb rear bar and wheel carrier, 126 litre Brown Davis tank, dual optima batteries, hf radio etc.

Around the city with roof racks, ladders and a back full of tools, 500 kms per 100 litres + or - a few. Standard tyres.
Around the city with no tools roof racks or ladders, much better, up to 600 kms per 100 litres.
Touring with the family, no racks, ladders, front spoiler back on, a few bags in the back, driving at the speed limit ,780 kms per 110 litres.

tough 4wd trip, all low range, camping and recovery gear 31 x 10.5 MTRs.
90 litres for 200 kms.

As a matter of interest my GPS reports that the speedo is dead accurate at 100 kms an hour with the 31x10.5 tyres. Reads 3 kms an hour fast with the standard tyre size.
Premium or standard fuel maks no difference to the fuel usage but the motor runs better and cooler with premium.

Posted: Sun Dec 11, 2005 7:44 pm
by Marty1
amtravic1... thats decent figures, because of the carby???
Better/worse for power with carby, and is it pollution legal?
Not that I'm worried, mine all about to be flung! :roll:

Posted: Mon Dec 12, 2005 9:27 am
by zuffen
I did a run to Cangberra and back yesterday from the northern side of Sydney.

Rangi DAKAR with Lexus 1UZ-FE LT77 and 12.5x33x15 Muddies. All up weight 1850kg.

Averaged 15.8litres per 100k (16.55mpg) for the round trip and also averaged 105kmh on the return run. The speed average included crossing Sydney so my average on the freeway was well over 120kmh.

I was pretty damned happy with that. Nothing passed my on the freeway!

Posted: Mon Dec 12, 2005 12:13 pm
by sclarke7171
Defender about 13l/100 on the hwy.

bush about 20l/100


Disco V8 Auto, best ever has been 22l/100 and norm is 28-30l/100

fuel usage

Posted: Mon Dec 12, 2005 7:44 pm
by amtravic1
amtravic1... thats decent figures, because of the carby???
Better/worse for power with carby, and is it pollution legal?
Not that I'm worried, mine all about to be flung!

I changed to a carby becuase the efi pissed me off. Some days it would run ok some it would not. Some times it was running ok then you would stop at traffic lights and it would run like someone had taken away 25% of its power when you drove off. It also stopped a few times and I could not get it to go resulting in a few trips on tow trucks to the dealers. No-one seemed to be able to fix it.
Now it has a simple carby set up. If it stops (which it has not) then it is easy to work out what is wrong, especially when I travel to some remote areas by myself at times.
The car has better power and better economy with the carby than even when the efi was running ok. Some will think it is a backward step. Thats up to them. I am happy and every time I turn the key the thing goes, and the same as it did the time before. The engine bay is simple with much more room as well. There is also far less electrical noise from the injectors which made the HF radio hard to hear when the motor was running.

Posted: Sun Dec 18, 2005 11:07 pm
by Steinzy
99 Range Rover 4.0
265/75R16 Cooper St's
K&N High Flow Air Filter
Only run Premium Unleaded

Around Town - 19.8L/100km
Highway - 16L/100lm
Offroad - 23 to 26L/100km

Cheers,

Anthony