4.2 88 petrol fuel usage

[builtlux88]

hey guys i just brought a 88 4.2 petrol with 300000k on the clock and just wanting to know how many k's ppl are getting out of a tank

also is there any way to make them better on fuel

and are they a good car to tow with as i purchased this to tow my other car cheers brendon

car is not efi.

[fj45304]

hi mate youl be lucky to get 450km out of 90 litre tank thats wat im averaging and have changed points to electronic with a pertronix kit added extractors and changed muffler,added snorkel and done full service there a great tow vehicle just heavy on juice

[mikmav]

if its not on gas, put it on gas, you'll get your $$ back in about a week with petrol they drink.

[rumpig89]

if its not on gas, put it on gas, you'll get your $$ back in about a week with petrol they drink.

correct

[builtlux88]

how much does it cost roughly to put on gas any rough ideas

[stressed]

about 3 thou

[big red]

just a report on fuel economy from the Petrol 4.2 Litre 6 over a few tanks:
usually sit on the speed limit 100 or 110 where applicable.

When i first got it, stock standard everything:
1990 4.2 petrol maverick carby manual
3.9 diffs, 31 x 10 x 15 tyres
-mostly highway 13.8 L/100Km
-bit of city driving and some freeway work 14.13 L/100km
- an hour and a halfs idleing, some offroad low range and a high tide beach run 20.13 L/100km
-some highway and some offroad tracks 15.98 L/100Km

Fitted 2" lift, console, dual batteries,LR tank.

-mostly highway and some city 14.50 L/100Km
-mostly highway 14.48 L/100Km
-mostly highway some dirt road and city 14.51 L/100Km
-highway, dirt road and 4wdriving 16.32 L/100km
-Mountain roads towing a tandem trailer 19.48 L/100km
-Mountain roads towing a tandem trailer 20.78 L/100km

fitted 33x12.5x15 muddies

-half highway and half city 16.03 L/100Km
-mostly highway and some city 15.65 L/100km
-mostly highway,dirt road and some 4wd 16.32 L/100km

[micks troll]

just a report on fuel economy from the Petrol 4.2 Litre 6 over a few tanks:
usually sit on the speed limit 100 or 110 where applicable.

When i first got it, stock standard everything:
1990 4.2 petrol maverick carby manual
3.9 diffs, 31 x 10 x 15 tyres
-mostly highway 13.8 L/100Km
-bit of city driving and some freeway work 14.13 L/100km
- an hour and a halfs idleing, some offroad low range and a high tide beach run 20.13 L/100km
-some highway and some offroad tracks 15.98 L/100Km

Fitted 2" lift, console, dual batteries,LR tank.

-mostly highway and some city 14.50 L/100Km
-mostly highway 14.48 L/100Km
-mostly highway some dirt road and city 14.51 L/100Km
-highway, dirt road and 4wdriving 16.32 L/100km
-Mountain roads towing a tandem trailer 19.48 L/100km
-Mountain roads towing a tandem trailer 20.78 L/100km

fitted 33x12.5x15 muddies

-half highway and half city 16.03 L/100Km
-mostly highway and some city 15.65 L/100km
-mostly highway,dirt road and some 4wd 16.32 L/100km

Far out you must baby it I'm lucky to get under 20ltrs to 100ks highway! 400ks to 73litres was my best (stocko everything), will never get it again as run 33's standard now and is lifted 6ish inches.
Not a fan of gas so will just put up with it drinking!

[nabstud]

just a report on fuel economy from the Petrol 4.2 Litre 6 over a few tanks:
usually sit on the speed limit 100 or 110 where applicable.

When i first got it, stock standard everything:
1990 4.2 petrol maverick carby manual
3.9 diffs, 31 x 10 x 15 tyres
-mostly highway 13.8 L/100Km
-bit of city driving and some freeway work 14.13 L/100km
- an hour and a halfs idleing, some offroad low range and a high tide beach run 20.13 L/100km
-some highway and some offroad tracks 15.98 L/100Km

Fitted 2" lift, console, dual batteries,LR tank.

-mostly highway and some city 14.50 L/100Km
-mostly highway 14.48 L/100Km
-mostly highway some dirt road and city 14.51 L/100Km
-highway, dirt road and 4wdriving 16.32 L/100km
-Mountain roads towing a tandem trailer 19.48 L/100km
-Mountain roads towing a tandem trailer 20.78 L/100km

fitted 33x12.5x15 muddies

-half highway and half city 16.03 L/100Km
-mostly highway and some city 15.65 L/100km
-mostly highway,dirt road and some 4wd 16.32 L/100km

If they are GPS corrected figures, that is awesome consumption! They are way below the average TB42 fuel use.

Usually average 20L/100km, more when towing. Not much you can do to make it better other than driving like a granny, all the above mentioned mods will make it nicer to drive and more reliable but only slightly better economy.

[anzac]

I run 33's, snorkel, extractors, electronic ignition, rebuilt the carby etc.

still crap. Usually get around the 300-350km mark to 75-80 litres depending on how much off road I've been into, usually around half off road, quarter hwy, quarter round town.

Before I rebuilt carby I was lucky to weigh in over the 200km mark.

IMO shut up and take it. We're the ones dumb enough to buy them, we pay to fuel them.

Personally, I'll save for LS1/2 and put that in before I spend coin putting it on gas. Until then I'll just have to drive my other cars round town and keep it for playing on weekends.

[big red]

the oddometer doesn't work so i use a navigator to check mileage.

when i first bought it i fully expected over 20L/100Kms and was pleasantly surprised ... on the first tank and thought i may have under filled it but it keeps on being more economical than my GU factory TD ute... and still goes quicker

dunno how it has been tuned by the previous owner but its done over 350,000 Kms with few problems.

[anzac]

the oddometer doesn't work so i use a navigator to check mileage.

when i first bought it i fully expected over 20L/100Kms and was pleasantly surprised ... on the first tank and thought i may have under filled it but it keeps on being more economical than my GU factory TD ute... and still goes quicker

dunno how it has been tuned by the previous owner but its done over 350,000 Kms with few problems.

GQ is much lighter for starters.

I get heaps of guys at work whinging about how their old shit box GQ was faster than their GU. Less weight = less effort to move, therefore same engine can push lighter car faster.

[big red]

the oddometer doesn't work so i use a navigator to check mileage.

when i first bought it i fully expected over 20L/100Kms and was pleasantly surprised ... on the first tank and thought i may have under filled it but it keeps on being more economical than my GU factory TD ute... and still goes quicker

dunno how it has been tuned by the previous owner but its done over 350,000 Kms with few problems.

GQ is much lighter for starters.

I get heaps of guys at work whinging about how their old shit box GQ was faster than their GU. Less weight = less effort to move, therefore same engine can push lighter car faster.

my GU is a factory 4.2 turbo diesel, my GQ is a 4.2 petrol wagon

[Mattoz]

I get about 13l per 100km on the highway but around town with my heavy foot i would guess about 25!

planning on puttin a ls1 in shortly