Increasing an engines fuel economy

G'day Tuff ?
the only "proven" way I know of ist to take the lead out of your boots :-)

"GO HARD OR GO HOME MATE!" simply isn't compatable with fuel economy.
Mike

One proven way to get better $$ per km travelled is to install gas...the new injected gas systems have finally put gas technology up there with efi. Not only that, but you will have better suspension with that extra weight to carry around on the back, and your range has also doubled with both tanks onboard.
Forget about the other things...if they made that much difference, why arnt they selling them to Toyota diect for fitment on the production line???
The last thing that will give you better economy is a unichip....it will also give you more torque, power and drivability. They can be bought duakl map for a gas conversion aswell, then you get the best of every world....
Andrew

i shouldnt be posting this as yet but i will even though i havnt done the final figures and probly coz im half cut.
last week with our daewoo i tried something that most people dont even think of when trying to cut fuel usage.
we managed with out to much effort to cut our fuel bill from 40ltrs last week to 25 this week.
we walked to the shops ect lol
cheers

Surprised it hasn't come up yet, but there are proven things to improve economy. A tuned exhaust system will help, at a price, but when you consider the $500 for a Fitch which arguably does squat (c'mon Bill) it makes sense. Has even been proven through dynotesting.

The only tried and proven way that beats "ALL" fuel saving devices !!!!
Don't drive your rig ??????
Cheers All
Cya in the bush
Barry

Go diesel or go and fill up again.

The other methiod is to place a piece of wood about 50mm thick between the pedal and the fire wall.

You already know what to do, just do it...

Wayne

Changing your vehicle for a bicycle is pretty fuel effecient :))
Most 4wds aren't (so far) really designed to be fuel effecient. Then we go and stick an extra few hundred kg of weight in them and hang roof racks and spare wheel carriers on em and wonder why it costs us so much in fuel.
Going slower is the only way that I know of to reduce consumption in either petrol or diesel vehicles.
As the man said, "liftum foot" !

Hey Bill, you are a bit slow off the mark.
Tuff IFS Lux has put the soapbox out ready for you.

Ha!

Tuffy,
I think as mentioned above, there are small improvements to be made with a tuned exhaust system and a snorkel all helping the engine breathe a bit easier but that is about it.
The improvements in doing this are still minimal and will take some time to recoup the cost of the intital expense in doing the modifications.

In saying this I had a Sahara Landcruiser in 1986 that dropped 2mpg when I put the bullbar and spotlights on it, and another 3 mpg when I put the roofrack on. All up a 5mpg loss in my fuel economy taught me a lot about the aerodynamics of the accessories that you add to your vehicle.

Brett

HiClone marginally effective with a few older engines. May increase desirable turbulence with badly designed inlet manifolds (and marginally improve performance) but unlikely to be any measurable effect on modern engine.

A few minor points:

Keep those tyres about 10% above recommended pressures - big wide tyres have high rolling resistance.

Ensure thermostat working correctly so engine heats up fast.

Drive away the moment you start the engine. Use light throttle openings until engine up to temperature.

Remove any excess weight from car.

Avoid using cruise control in hilly going (can make big difference).

If feasible drive at 80 km/hr (consumption escalates above this).

Am not convinced re Shell/BP! More likely the Shell station has a sloping driveway or something so you are filling to a lower tank level. My Nissan has 235 litre tankage so measurements more meaningful. I use both Shell and BP and detect no difference - consumption remains within about 3% (the closest you will hope to measure this way) with either.

As an ex-GM research engineer I can only add that if any of the 'add-ons' improved both performance AND consumption (instead of one at the invariable expense of the other) - the car makers would include them themselves - as they did with the turbo-charger and inter-cooler).
Collyn Rivers

I saw a fuel saving device on e-bay once. Guarenteed to work. It was a bit of 50 by 50 that slid under the accelerator limiting its travel. Soon to be availible in carbon fibre look.

put an extra 10psi in each tyre - reduces rolling friction, saves fuel, no cost ... only downside is a bumpier ride

cheers
andrew

Has anyone tried this?

http://www.pureenergysystems.com/news/2005/03/17/6900069_Acetone/

I would like to give it a go as it sounds feasible & may just work.

According to the reports it works as well in diesel as petrol.

Or is it another of those 'too good to be true' things.

Regards

Neil.

Quote "exhaust is too dificult with the 3.4 V6 in the hilux as there is bugger all space for ext
ractors and a custom set will set me back 2-3 grand.
not willing to spend that much without a guaranteed outcome." /Quote

Mate, most benefit can be gained from exhaust mods from the headers back. Stock headers are usually quite good but fitting a larger bore system (about 2.5" for the 3.4LT) and a free flowing cat converter will give quite a measurable increase in performance/power or economy... Depends on how you drive it after the mods :-) and it won't cost a fortune either....