Outer Limits 4x4 Board

Hi guys, how much do your gu 4.2 turbo diesels get fuel consumption wise?How big is the tank in the gu st?

Thanks

Haven't been real happy with mine since I bought it. 135k on the clock, 2" lift, 265/75's and its a wagon. Nearly always unladen and my average since purchase is 14.4L/100km but that is mainly urban. Doesn't really get much better on the highway, low 14's usually. Best ever is high 13's and worse is 16.3L/100km. Just had it dyno tuned so will see how the figures pan out as i clock up a few k's.

14.4l to 100 aint bad considering its like 2.5 tonnes of car put a 3" zorst on it and it will get better

also if the car has high kms may pay to get the injectors done as will may save alot of fuel too

I get 14.3 driving back and forward to work with my 185 rwkW GU TD42, dosen't seem to change that much regardless of how I drive.

Cheers

Joel

On a trip to QLD loaded up including roof rack and 4 days on Fraser Island I averaged 14.3/100. Best I got was 12.8 sitting on 105kph on highway and worst I got was 17 while on Fraser Island driving in dry sand. But I have only got half the power Joel has

Oh forgot to mention mine does have 3" dump and exhaust. Does kinda annoy me that Joel can get the same figures with 185rwkw and mine only makes 98rwkw That thing must be a beast, can you give me an indication of the setup you're running to make that power?

Custom intake manifold, extractor style exhaust manifold, custom roller bearing turbo, custom cam, minor head porting, HPC comp chambers, exhaust ports and pistons, balanced and a big pump. I actually have the aneroid switched so I can drive around mostly on about 150 rwkW and little smoke. Even at that its good to drive.

Cheers

Joel

I consider my 17/18 to the 100 not to bad, running 37's on 6" plus of lift with 4.6 gears and heaps of stuff hanging off it

13/14 would be great, but i dont think my car even ran that sweet from new

03 DX on splitties winch bullbar ect ect 2" ome lift

12.5-13l per hundred
round town 70/30 freeway to street driving

00 Dx 4.2 td wagon.
13L /100km - pretty consistent for everyday driving.
pump tweaked, 3 inch exhaust system, std height, barwork.

but will use 20l/100 towing 2 ton at 110....

On a trip from sydney to bundy(for the rum) I got 11.5 on the open road sitting on around 105km/h. It has 3inch exhaust, 35's and 4.6 diff gears and 5inch lift. it was around 3 tonne when we drove up. Towed a GU ute with it around 600kms on the weekend and used 120litres sitting around 100km/h

No one has mentioned the speedo accuracy. Mine with 4.6's and 35's (was previously a 2.8) is spot on, but with stock tyre size was nearly 10% down, 100 on my speedo was only 90 so I wasn't travelling as far as the odometer said.

Joel

This is a very good point Joel. However, the speedo and odometer don't seem to be correlated in their accuracy on my car, is this normal? I have only done one odo test and from what I can remember it was reading approx 10% less than reality. My speedo on the other hand reads 4% low in that at 100km/h (by gps) it reads 96. So presumably I should account for the odometer inaccuracy which would make my figures in the 13L/100km territory for the most part.

PGS 4WD wrote:No one has mentioned the speedo accuracy. Mine with 4.6's and 35's (was previously a 2.8) is spot on, but with stock tyre size was nearly 10% down, 100 on my speedo was only 90 so I wasn't travelling as far as the odometer said.

Joel

x 2
my gu45 with 33's is spot on with the spedo and about 3km out per 100km with the odometre, so every 100km travelled iv done 103, which is close enough for me!

Most cars in stock form will under read by 6-7%,so all the guys and gals out there with there stock size tyres are getting fewer km's out of there tanks then what they think!

I Have a 99 4.2 Non turbo Gu with an after market Hi Flowed Roller bearing turbo With big $$$ Fuel pump running 14pound boost & 33" tyres for day to day & 35" for weekends & still have standard Gearing. Around town with 33's i get about 12ltr per 100 if I drive nicely & 14 if I flog it, With the 35's it jumps to 14 nicely & 16 Floging it.The guy that tuned it has the fuel pouring in over 8 pound boost so driving nicely around town still gets great fuel consumption but put your foot into it & has great power getting around 160 @ rear wheels once i finish it with a intercooler should be arond the 200 @ rears but drive it nice & get the good fuel condsumption best of both worlds speacialy with deisel around the $1.60 mark