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tb42 fuel usage

Posted: Sat Feb 26, 2005 8:04 pm
by dwaynes
Hey guys just curiuos on what milige people are getting out of there GQ's
i have a 89 GQ LWB dual fuel 4.2 and am getting about 350 out of a 90litres of gas and about 400 out of a 70 litre tank of petrol is this about right.

I have been told these are real thirsty and just want to see if this is comparable to everyone else

Posted: Sat Feb 26, 2005 8:10 pm
by Stoknisan
I have a 93 dx on duel fuel, I get about 350 - 360 kms out of 80 litres of gas. As far as fuel goes I get about 380 kms out of a 58 litre tank. This is a combo of highway and city kms

Posted: Sat Feb 26, 2005 8:13 pm
by dwaynes
cool i dont feel so bad then

are you running stock?

I am only running with 2" lift and 32" BFG mt's

Re: tb42 fuel usage

Posted: Sat Feb 26, 2005 8:48 pm
by Screwy
dwaynes wrote:Hey guys just curiuos on what milige people are getting out of there GQ's
i have a 89 GQ LWB dual fuel 4.2 and am getting about 350 out of a 90litres of gas and about 400 out of a 70 litre tank of petrol is this about right.

I have been told these are real thirsty and just want to see if this is comparable to everyone else


yep this is about exactly wat im getting from my SWB.

But im getting about 350kms out of 40 litres of petrol
LPG is spot on though...

about $35 for 350kms

screwy

Posted: Sun Feb 27, 2005 8:05 pm
by Stoknisan
Yep, I am pretty much stock, 2" susp lift, unfortunately running only 31" coopers (hoping to upgrade shortly). I do have a 3/4 roof rack on full time which may stuff things up a bit.

The one thing that I have found really helped the running performance was the day after I had a piranha electronic time system fitted to essentially do away with the points.

Posted: Mon Feb 28, 2005 8:32 am
by Draven
Ive got 3" lift, run 31's during the week, have LPG leads, MSD Coil, Iridium plugs, Elec Points, K&N Filter. And I get about 400 - 450Km to nearly 80Litres of Gas. (Mixed driving)

Not sure on Petrol, very rarly run through a full tank of that stuff.

Posted: Mon Feb 28, 2005 7:06 pm
by Screwy
Draven wrote:Ive got 3" lift, run 31's during the week, have LPG leads, MSD Coil, Iridium plugs, Elec Points, K&N Filter. And I get about 400 - 450Km to nearly 80Litres of Gas. (Mixed driving)

Not sure on Petrol, very rarly run through a full tank of that stuff.


all that gear on ur motor would be giving u that exta 50- 100kms.

i am on 33's with 2 inch coils and get 360 MAX from full tank of gas which is about 80 litres.

screwy

Posted: Sat Mar 12, 2005 6:15 pm
by dwaynes
well i tested it today driving to adelaide got 450 kms out 70 litres of petrol the first 150 were city driving

then the suprising 90 litres of gas i currently at 440 km's and still running so i am now not sure what the hell is going on.

Posted: Sat Mar 12, 2005 7:58 pm
by Screwy
THATS UN REAL DUDE :shock:

I made a mistake with my prior statement.

I got 360kms MAX outa a tank of LPG with the 31s on and no air.

with the 33's on im struggling to get 310kms outa a tank.....
If i turn the A/C on thats now installed, im lucky to get about 260kms
:cry: :cry: :cry:

this is in an SWB :?

Im driving down the melbourn on wednesday so will be able to test it properly on highway cruising and see how i go ;)

fuel usage

Posted: Sat Mar 19, 2005 11:24 pm
by matsmad
U guys are lucky... I only get 350km MAX from 80 odd litres of PETROL! Ouch!

Posted: Sun Mar 20, 2005 1:47 pm
by MAVRK-4
Ok I have a 92 Mav with a 147L Tank, and get about 700-750km's off of ~110L of Petrol at best

I run 33" mud tyres with a 3" lift and use a finer filter with snorkel, full length off road roof rack as well.

Posted: Sun Mar 20, 2005 10:09 pm
by Screwy
Screwy_ScrewBall wrote:THATS UN REAL DUDE :shock:

I made a mistake with my prior statement.

I got 360kms MAX outa a tank of LPG with the 31s on and no air.

with the 33's on im struggling to get 310kms outa a tank.....
If i turn the A/C on thats now installed, im lucky to get about 260kms
:cry: :cry: :cry:

this is in an SWB :?

Im driving down the melbourn on wednesday so will be able to test it properly on highway cruising and see how i go ;)


Ok been to melbourne and come back......

I was only getting 250kms outa 85litres of LPG MAX....
the lowest i got was on the wat home and it was 190kms outa 85litres of LPG.....
i was towing close to around 800kgs at a guess on the way back and about 500 on the way down.......
but still ya get the idea.... I NEED A TUNE ;)

Posted: Mon Mar 21, 2005 6:44 am
by grazza
MAVRK-4 wrote:Ok I have a 92 Mav with a 147L Tank, and get about 700-750km's off of ~110L of Petrol at best

I run 33" mud tyres with a 3" lift and use a finer filter with snorkel, full length off road roof rack as well.


Thats pretty damn good. Almost unbeleivable.

750/110 = 6.81 km/L or 14.6 L/100 or 19.23mpg

Other similar spec GQ's are getting 22L/100 here....

Posted: Mon Mar 21, 2005 7:59 am
by planb
im running 35s with 4.1 gears

i averaged 21.5L per hundred on the highway on lpg

thats precise to the decimal point. (auto trans also)

what that is per tank i havent figured out (suppose to be a 92L tank)

around town its closer to 30.

i want to get rid of that restrictive air intake and fit up some extractors and zorst.

i had iridiums but i replaced them when i fitted the gas

its the efi motor also so it runs the diffent ignition,

Posted: Mon Mar 21, 2005 8:04 pm
by skippy's GQ
i only get about 300 kms to 400 kms on 75ltrs of gas and worked out that i get 20lts per 100 kms on petrol :)

Posted: Mon Mar 21, 2005 8:26 pm
by dwaynes
dwaynes wrote:well i tested it today driving to adelaide got 450 kms out 70 litres of petrol the first 150 were city driving

then the suprising 90 litres of gas i currently at 440 km's and still running so i am now not sure what the hell is going on.



Well the return trip was identical other than i got 465km out of the petrol all highway driving.


can some one please post the maths behind the calculations if possible

Posted: Mon Mar 21, 2005 9:00 pm
by fastest
I have a GQ efi running duel fuel with 265/75/16's I get 400 ks on 84 lt of gas city driving. When I put the play tyres on 285/75/16's I get about 350 ks due to the extra drag.
On petrol I have a 45 lt tank and get 200 ks if I drive it easy.

Posted: Tue Mar 22, 2005 6:42 am
by grazza
can some one please post the maths behind the calculations if possible


Here's the maths:
http://www.onlineconversion.com/fuel_consumption.htm

Posted: Tue Mar 22, 2005 11:01 am
by BOB_1
I just did 400km on 63 litres of petrol with 285/75 16 muddies on my 91 Mav wagon on the highway. Not too bad.

Posted: Tue Mar 22, 2005 11:17 am
by rOd
Screwy_ScrewBall wrote:[I was only getting 250kms outa 85litres of LPG MAX....
;)


Thats about the same for mine, SWB, carby tb42.

Poor Kms range. :cry:

Posted: Tue Mar 22, 2005 1:51 pm
by jessie928
SOME of you guys need to get your speedo's calibrated....

you are getting near impossible mialage from a 4.2 petrol patrol :-)

JEs

Posted: Tue Mar 22, 2005 1:51 pm
by hottiemonster
rOd wrote:
Screwy_ScrewBall wrote:[I was only getting 250kms outa 85litres of LPG MAX....
;)


Thats about the same for mine, SWB, carby tb42.

Poor Kms range. :cry:


i agree

when i had 31s and 3.9s = 450-500km outta 100litres gas.

now 33s and 4.6s = 300-350 outta 100 litres :cry:

Posted: Tue Mar 22, 2005 7:33 pm
by MAVRK-4
jessie928 wrote:SOME of you guys need to get your speedo's calibrated....

you are getting near impossible mialage from a 4.2 petrol patrol :-)

JEs


.....I was taking into account my trip meter is out by 10%, otherwise my reading would have been 10% less, my speedo reads 10% slower with the 33's

....but I did also say 'at best' my driving habits can severely alter this depends on my mood

Posted: Thu Mar 24, 2005 7:39 pm
by hottiemonster
with my spedo now

35s are accurate
33s spedo is about 10% faster than speed actually traveling

currently on 33" roadies :cry:

Posted: Thu Mar 24, 2005 8:27 pm
by Screwy
on way down the melbourne i went under those speed indicator digital signs down from wodonga......

mine read 103kms and i was sitting at 100kms on the speedo

thats with 33x12.5 BF muds......

i think if i go to like 110kms on speedo the display further on was reading somthing like 115kms

screwy