Fuel consumption, a question most likely already asked.

[Disco Stew]

G'day all

I was wanting to know the fuel consumption of a Series 3 109 four cyclinder petrol. I did a search and fuel consumption was mentioned in a number of threads but I couldn't actually find one that gave figures.

My 2.25 is dual fuel and I calculated other day that it uses approx 24 l per 100 km and by my experience with LPG cars that should equate to about 19 l per 100 km if running on petrol which is about that of a V8 Disco.

Can anyone sheeld some light on this for me.

Regards :confused:

[Blknight.aus]

thats about right, the effeciency of the series engines is down on lpg due to the basic nature of the engine namely that its low compression.

on petrol they can do 15l/100 but realistically expect 17/100 as a good figure 19-21/100 as about average.

[101RRS]

In all of my driving a series 3 which was my everyday drive I averaged 17mpg overall - a little better on the highway - a little less around town. The Series 3 was replaced by a brand new 3.9V8 disco which overall gave the same fuel consumption.

Garry

[Disco Stew]

Thanks guys I thought so but didn't want to believe it. It is a good thing it is so much fun to drive.

Does a Holden six fitted to one of these things do any better?

Regards

[THE BOOGER]

not really:(

[JDNSW]

Thanks guys I thought so but didn't want to believe it. It is a good thing it is so much fun to drive.

Does a Holden six fitted to one of these things do any better?

Regards

Not significantly, although with changed gearing you might do a little better. Problem is that although higher compression, most Holden engines are significantly more powerful, so you drive faster!

The 2.25 petrol engine is designed for reliability, durability, driveability and use of low grade fuel. Note that economy did not get a mention! Add to this a totally unstreamlined shape, and a quite substantial mass, and fuel economy is not going to be good.

The economy device that was optional on 2a 88s is a heavy spring that comes into play at about half throttle. Either this or take note of the comments in the 2a owner's handbook "In common with all vehicles the petrol consumption mounts rapidly if high speeds are maintained. For example, at 50mph (80kph) the consumption in miles per gallon will be one and a half times as much as at 30mph (48kph) and at 70mph (112kph) the rate will be twice as much."

John

[101RRS]

Thanks guys I thought so but didn't want to believe it. It is a good thing it is so much fun to drive.

Does a Holden six fitted to one of these things do any better?

Regards

No - if anything worse because at cruising you are near its upper rev limit with landie gearing.

[Sideroad]

My 109 with a 186 on gas uses 26L/100km average with city, suburban and freeway driving on 7.5/16 tyres.
I keep telling my self that at the half price (13l/100km :) it is just as good as an average modern 4x4. :)

[101RRS]

My 109 with a 186 on gas uses 26L/100km average with city, suburban and freeway driving on 7.5/16 tyres.
I keep telling my self that at the half price (13l/100km :) it is just as good as an average modern 4x4. :)

Wow - even my 101 does better than that on both gas and petrol.

[Sideroad]

Wow - even my 101 does better than that on both gas and petrol.

I am not sure how to fix it, but it has always seemed very bad.

[Blknight.aus]

a quick swing past your local tamed and friendly landrover mechanic is a good way of sorting it out.

tomorrow afternoons fine.

[Rob king]

I have a SIII 2.6

On new years day I drove 803km on the hume Hwy.
Most between 90 - 100km/hour.
I used exactly 160l [20l / 100kms] which i'm told is about average.

Around town, I'm getting 25l / 100km.
My town is fairly hilly though, and there's a bit of idling, towing and hill climbing in that!

I do hear tell that changing the old stromberg carby is the only real way to make a difference to fuel and / or power.
However that wouldn't be authentic, and besides I even have a spare one.:cool:

What about a higher speed geers in the transfer box too?

Rob King.

[THE BOOGER]

Hi speed transfers are around but at $1000 to $1500 the gain may not be worth it, some people who have had them say you loose a lot of top end power and need to change back going up hills so it may be ducks and drakes. I have thought about it as well but i already have to change back to 3rd on a lot of hills:D. I just got mine back from a tune up by a reputable LR mech and it still gets 20l/100km:)

[JohnF]

:D:D My series 3 is a 4 cylinder gets about 10 litres per 100 km :D:D:D















Did I mention it is an Izuzu deisel 4bd1 with under a milliuon kilometers on the clock :) .

[Sideroad]

a quick swing past your local tamed and friendly landrover mechanic is a good way of sorting it out.

tomorrow afternoons fine.
Hey Blknight, are you the friendly LR mechanic? If not, do you know any?
I currently am in need of one to do a road worthy. ('currently' as in, as soon as I have done the obvious long neglected repairs) Would a friendly LR mechanic be so friendly when he pops the bonnet and finds a 186? :)

[Sideroad]

[QUOTE=JohnF;1338879]:D:D My series 3 is a 4 cylinder gets about 10 litres per 100 km :D:D:D
I like the massive gap to the disclaimer :) I almost got excited.

[Blknight.aus]

Hey Blknight, are you the friendly LR mechanic? If not, do you know any?
I currently am in need of one to do a road worthy. ('currently' as in, as soon as I have done the obvious long neglected repairs) Would a friendly LR mechanic be so friendly when he pops the bonnet and finds a 186? :)

I am one of, this one wouldnt and I have access to a friendly rego bloke.

Id have to have a good look over it but economy out of a 186 in a stock series aint gunna happen.

[Sideroad]

I am one of, this one wouldnt and I have access to a friendly rego bloke.

Id have to have a good look over it but economy out of a 186 in a stock series aint gunna happen.

Where abouts is the rego bloke? I am at coorparoo, but am willing to travel to get quality service.

As for the 186, I am going to give 3.54 diffs a go. ( seeing as I accidentally have 3.54 in the front already re: post about running different diffs) I am also considering a torque or gas cam. Is ther much to be gained?
It is on LPG, am wondering if I ran a 320 holley for better flow of the gas. Is it possible to have it tuned to only gas and a simple dizzy adjustment to use petrol if I need to? I have heard of setting up a stop or having marks set for both dizzy settings.

[Battlebus]

I have a S111 2.6 with high ratio gears fitted, power is ok, I sit on 90 to 100kpm at about 2200rpm. I have never had to change down for hills while driving on the road. I have a fairey Overdrive for sale if that helps.
Never worried about fuel economy, if I did I would never have bought a Land Rover

Cheers
Pete

[tangiers]

I was getting around 28 litres/100km on my 1977 SIII SWB with a Holden 202. I have since replaced the fuel tank (the old had rusted and was leaking - though I never noticed it), replaced the distributor with an electronic one ($100 on eBay) and am now getting 16 litres/100km which is not bad, I think, given that this is based on the worst conditions for fuel economy: short trips of 4km twice a day to the station and some city driving in traffic on the weekends.