how do u make a 3f petrol cheaper to run

[troopyluke]

hey i got a troopy with a healthy rebuilt 3f in it the best i can get from a full tank (85 litres) is 250 kms it hurts the hip pocket a little and been an apprentice only makes life harder

[hulsty]

Sell it buy a diesel thats what I did. 250km to those 85L is heavy though, mine in a healthy state of tune with snorkel, extractors, HEI ignition on 33''s returned 23-25L/100km. I sold it and bought pretty much the same car in turbo diesel, goes better, 11.5L/100km and total fuel cost is within cooee of the 3F. Its a big heavy 4x4, it will never be cheap to run.

[troopyluke]

ive heard that bout 15 times over ive actually got a 60 series sahara in me back yard with a 12ht turbo six diesal and an auto rammed up its arse im nearly at the point of throwin motor box diffs (only cause its all 4 discs with front and rear landcruiser air lockers from arb straight into the troopy pretty out there conversion but i figured if dad and i could convert all the running gear out of a defender into a dirty ole series three and get it registered wats stopping me besides its to only car i got to drive and im an apprentice on 300 a week

[troopyluke]

the old 3fs haull ass to u py for the power right the old troopy sits on 110 pullin a 25 foot tinny no worries

[Suspension Stuff]

I say work harder or longer or smarter so the price of fuel doesn't hurt so much.

[RAY185]

LPG

[mlowe76]

LPG

I'll second that

I have a 3F on LPG, and out of 75 litres I get 350Km give or take a bit.

on Petrol I get about the 250 range as well.

[flyology]

What is the 3F in? a 75 series troopy with a 5 speed? what year? carby model?

If you at sitting on 110kph towing a 25ft boat no wonder your fuel economy is average....

I would suggest a good tune and service, pull the dissy out and get it graphed, make sure brakes are not dragging, tyre pressures are correct, all the little things.

I had a 2F 82 troopy with 4 speed and used to get around 450 - 500klms out of a tank on highway driving, city used more. The killer is high revs and speed, anything over 80kph and fuel economy really suffers.

[pcman]

i 3rd the lpg comments

especially when lpg conversions are practically free these days with the goverment chucking money at you too convert

[Thommo 73]

replace it

[troopyluke]

its a 1991 model troopy 75 series with a 5 speed manual motors completely stock no mods besides running a 350 holley motor was rebuilt 15000 ks ago with new holley new distributer

[flyology]

Have a search on some of the US sites for carb replacement, they use a twin throat weber similar to a 32/36 to get better fuel economy. I know a few people that have put holleys on 2F's and taken them off as they ended up using too much fuel.

250 klms for a 85 litre tank is crazy. thats around 3 klms a litre!!

[troopyluke]

my father used to get up me sayin i drive it to hard he drove from hervey bay to inskip point and back and shit himself with the amount of fuel it uses

[scuba steve 22]

get rid of the holley
i have the 3fe and i get about 450 from a tank(21/100)
try a xe falcon carby (webber) or convert to efi

[oldmate]

chuck in the 12ht you say you have. fairly straight forward swap.

[RED60]

Sell me the 12ht cheap and spend the $$$ on fuel or go lpg.... either way sell me the 12ht cheap

[troopa]

And if RED60 dont buy the 12HT i will!!

[lucifer48]

As Scuba has suggested, get rid of the 350 holley and stick a 34ADM weber off a XE/XF ford on it.

If you are going to LP gas it, make sure you fit a solid type float into the carby (be it the weber or holley) as a backfire, which can happen on LPG will crush the float and it will flood when running petrol.

[stockhorse]

I have a 1986 62 running standard everything and get 470 -490 k's per tank around town. Perhaps the holley was not a good idea.


If you do go the 12HT I would be interested in the 3F.

[sierrajim]

the old 3fs haull ass

you should get a job in a comedy club. A 3F haul ass

My old 3F middy used to cost around $12-14 per 100km to run on gas rolling on 35's.

[troopyluke]

itd have more go then a standard 1hz or 2h diesal

[flyology]

Would you be able to legally put a pre 91 model engine in??

[troopyluke]

i dunno id have to venture further into info on it wen i get around to it

[Grylls]

Take the roof rack off. Can't be good for it

[troopyluke]

i put it on n the full bill never changed and ryan i think dads gunna wreck that 60 series but i got dibbs on the ddiff centres

[geoff70]

dont go near a webber carb go the holley much better or we use to use a old holden red motor stromberg fitted with a high speed jet on our bullcatchers it made them haul arse mate

[troopyluke]

the head machenic at work recomended i try to set it up with a 3fe injection unit whos got one hahaha

[Grylls]

Haha no prob lukey not sure they would fit mine anyway. I don't know if putting the motor out the 60 is such a good idea. It's done a lot of k's and probably will need a rebuild. Can't believe it is so bad on fuel! Bet my rover doesn't look so bad now after all hope you are able to get it running better mate. Would be a shame to have to sell it.

[BJ73]

the old 3fs haull ass

you should get a job in a comedy club. A 3F haul ass

My old 3F middy used to cost around $12-14 per 100km to run on gas rolling on 35's.

Hey, thats my car you're talking about dude

I reckon it hauls arse, compared to a 3B