-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
-with the standard jets - 26l/100km
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How good is your fuel economy?
Moderator: Micka
'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)
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)
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
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
'92 GQ
Hopefully more reliable than my rangie...
Hopefully more reliable than my rangie...
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.
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.
Bushies: http://www.angelfire.com/on4/bushy5560/ http://www.angelfire.com/on4/bushy5561/
Lightforce HID conversion stuff: http://www.angelfire.com/on4/bushy5551/
Lightforce HID conversion stuff: http://www.angelfire.com/on4/bushy5551/
Is that in a bush-rangie? Any idea what the weight is?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.
_____________________________________________________________
RUFF wrote:Beally STFU Your becoming a real PITA.
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.
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.
[quote="Wooders"]If ya want a 4x4 camry go ahead & buy a Patrol or Cruiser.[/quote]Rangie with 80s LC diffs, Isuzu 4bd1, Twin ARB lockers, 8000lb Hi mount warn, 315x75x16 Procomp XTerrains
fuel usage
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.
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.
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!
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!
Cheers,
Zuffen
There's no such a thing as too much horsepower
Zuffen
There's no such a thing as too much horsepower
fuel usage
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.
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.
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