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Stick with the 1HZ or get a 1FZ? Fuel figures?

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Stick with the 1HZ or get a 1FZ? Fuel figures?

Hi Guys

I have been building up my 1HZJ105 for a few years now and at first having no power wasn't an issue but lately it has finaly got to me. I do not have the money for a Turbo so the options are keep it or sell up and buy a Petrol 1FZJ105 with more power. My theory is that with desil prices at around 1.50 and Petrol at around 1.35 and also only requiring 2 services per year instead of 5 services based on 20,000 kms a year that it would average out.

So my question is does anyone have a 1FZJ105 and are you happy with it? What are your fuel consumption figures? Is there another option to get more power out of the 1HZ without spending big dollars?
Last edited by bucky1 on January 17th, 2012, 7:47 am, edited 3 times in total.
Toyota Landcruiser FZJ105 4.5Ltr Auto.Pacemaker headers & 2.5" exhaust
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Unread postby bucky1 » January 11th, 2012, 12:55 pm


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Re: Stick with the 1HZ or get a 1FZ?

Don't forget the oil changes inc. filters when factoring the price... also price up a re-build for each enginge (god forbid!)

Unread postby Trolin » January 11th, 2012, 3:59 pm


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Re: Stick with the 1HZ or get a 1FZ?

i got a 1fz 105 and love it mate, when you want revs its all there, going for a sprintex supercharger soon so that will make it peak hardcore off road, but really just getting it for towing a caravan and some more fun off road. a full engine swap would cost more than a dts turbo kit. i would save and turbo it.

Unread postby phat-truk » January 11th, 2012, 4:16 pm


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Re: Stick with the 1HZ or get a 1FZ?

have seen someone recently on another forum who has just sold his turbo'd 1HZ GXL 105 series to buy a Petrol version, so your not alone in your thinking. he was asking $40K for his kitted out cruiser with about 143000 klms on it (i think from memory), sold it in about a week and bought a petrol version for about half what he sold his diesel version for.

Unread postby rumpig » January 11th, 2012, 6:00 pm


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Re: Stick with the 1HZ or get a 1FZ?

That would be me :)
But I had my HZJ105 turbo'd as well but still it was line ball with power. Great without the trailer on but with it on it still struggled on big hills, wasnt great on fuel for the power it had and then there was the reliability stakes with engine and gearbox.
Only done 1000kms so far but love the smooth, quiet power and fuel consumption was on par or better than the diesel. Havent had the trailer on yet though.
FZJ105 GXL Cruiser Lifted,33 MTR's,ARB Bar,Rear wheel carrier, Draws, Front & Rear Locker, Lots more ARB goodies
FZJ80 GXL Cruiser OME Lifted, Safari Snorkel, Kaymar Rear Bar
FJ40 1976 Rear Locker, Spotties

Unread postby Moto Mech » January 11th, 2012, 8:34 pm


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Re: Stick with the 1HZ or get a 1FZ?

Christ, I'd hate to see the tune of your 1HZ if its using the same amount of juice or worse than a 1FZ!! I've got a mate with a gassed auto FZJ80 and his truck never gets below 18L/100 on petrol and 20L/100 on gas- thats on 33" tyres.

Also dont forget that when you sell your truck and buy another one you've gotta pay stamp duty on the sale and purchase, and that can quickly add up to the price of turbo'ing the 1HZ.

Unread postby ferremit » January 12th, 2012, 12:45 pm


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Re: Stick with the 1HZ or get a 1FZ?

And once you turbo your 1HZ, you're now in the unknown. How long will it last? When will my gear box crap itself? Will it over heat? etc
You would not have found a better tuned turbo'd 1HZ than mine but fuel consumption was around 16lt/100kms and it was still only just powerful enough. I can live with a couple more litres/100kms for the extra power, quiet and smooth engine and stronger engine/gearbox from the 1FZ FE engine. Not interested in gas conversion.
My biggest loss will be re-sale but if im not happy with the petrol engine, Im going for a FACTORY TURBO 1HD FTE conversion, which by the way I have enough left over from selling my diesel and buying a petrol.
As Ive said before- its a FACTORY Turbo diesel or its a petrol, IMHO.
FZJ105 GXL Cruiser Lifted,33 MTR's,ARB Bar,Rear wheel carrier, Draws, Front & Rear Locker, Lots more ARB goodies
FZJ80 GXL Cruiser OME Lifted, Safari Snorkel, Kaymar Rear Bar
FJ40 1976 Rear Locker, Spotties

Unread postby Moto Mech » January 12th, 2012, 1:42 pm


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Re: Stick with the 1HZ or get a 1FZ?

Moto Mech wrote:As Ive said before- its a FACTORY Turbo diesel or its a petrol, IMHO.
each to their own...my turbo intercooled 1HZ is now been going strong for 4 years since it was done (touch wood...lol), no gearbox problems either, and i tow a builders trailer loaded with tools every day for work aswell as a camper trailer when going away, so it gets a workout.
can't say i stress to much about what might happen to the engine, if it happens then it happens, i'll do a factory turbo conversion if it ever dies.

Unread postby rumpig » January 12th, 2012, 4:52 pm


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Re: Stick with the 1HZ or get a 1FZ?

I too wasnt worried if the engine or g/box died around Tassie but when away in remote destinations, it was always in the back of my mind.
My old rig may have gone for ever, then again.............. But it did give me 7yrs of faithful service with absolutly no drama's whatever. And the last two years turbo'd and Intercooled with out a problem.
FZJ105 GXL Cruiser Lifted,33 MTR's,ARB Bar,Rear wheel carrier, Draws, Front & Rear Locker, Lots more ARB goodies
FZJ80 GXL Cruiser OME Lifted, Safari Snorkel, Kaymar Rear Bar
FJ40 1976 Rear Locker, Spotties

Unread postby Moto Mech » January 12th, 2012, 7:18 pm


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Re: Stick with the 1HZ or get a 1FZ?

If i sell my 1998 1HZ for $22000 with 215,000Kms and pick up a 1FZ for under 18 or 19000 that give me a bit for after market goodies..
Last edited by bucky1 on January 13th, 2012, 10:15 am, edited 1 time in total.
Toyota Landcruiser FZJ105 4.5Ltr Auto.Pacemaker headers & 2.5" exhaust
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Unread postby bucky1 » January 13th, 2012, 9:47 am


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Re: Stick with the 1HZ or get a 1FZ?

Moto Mech wrote:That would be me :)
But I had my HZJ105 turbo'd as well but still it was line ball with power. Great without the trailer on but with it on it still struggled on big hills, wasnt great on fuel for the power it had and then there was the reliability stakes with engine and gearbox.
Only done 1000kms so far but love the smooth, quiet power and fuel consumption was on par or better than the diesel. Havent had the trailer on yet though.


Moto Mech,

Do you have 33'' on the petrol model? and how much fuel are you getting to the 100Kms? If you fit extractors and 2.5'' exhaust would it be better on fuel?
Toyota Landcruiser FZJ105 4.5Ltr Auto.Pacemaker headers & 2.5" exhaust
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Unread postby bucky1 » January 13th, 2012, 10:14 am


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Re: Stick with the 1HZ or get a 1FZ?

bucky1 wrote:
Moto Mech wrote:That would be me :)
But I had my HZJ105 turbo'd as well but still it was line ball with power. Great without the trailer on but with it on it still struggled on big hills, wasnt great on fuel for the power it had and then there was the reliability stakes with engine and gearbox.
Only done 1000kms so far but love the smooth, quiet power and fuel consumption was on par or better than the diesel. Havent had the trailer on yet though.


Moto Mech,

Do you have 33'' on the petrol model? and how much fuel are you getting to the 100Kms? If you fit extractors and 2.5'' exhaust would it be better on fuel?

Its got 285-75/16" wheels which are just under 33". Ive only driven it from Sydney back to Tassie with combined useage of 16lt/100kms which is the same as my HZJ105 used to get without the camper on the back. Thats with one tank of premium and one regular as I wanted to see the differance in fuel. Premium did 15lts/100kms and regualer did 17lts/100kms. This was travelling at 90-95kph which is the same speed as I used to travel in the HZJ. I have no need to speed.
FZJ105 GXL Cruiser Lifted,33 MTR's,ARB Bar,Rear wheel carrier, Draws, Front & Rear Locker, Lots more ARB goodies
FZJ80 GXL Cruiser OME Lifted, Safari Snorkel, Kaymar Rear Bar
FJ40 1976 Rear Locker, Spotties

Unread postby Moto Mech » January 14th, 2012, 7:04 am


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Re: Stick with the 1HZ or get a 1FZ?

Moto Mech,

Thanks mate, those figures sound good to me for premium fuel. I currently get around 15ltrs in my standard with 33'' muds on and constantly carrying a steel bar and steel roof rack.
Toyota Landcruiser FZJ105 4.5Ltr Auto.Pacemaker headers & 2.5" exhaust
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Unread postby bucky1 » January 14th, 2012, 5:26 pm


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Re: Stick with the 1HZ or get a 1FZ?

I've got a 1fz 100, Runs at about 25l/100 on petrol and more on gas, so around 320kms to 350kms out of each tank. 90l petrol 100l gas. In low range it'll struggle for 500kms out of both tanks. It does have 35x12.50 muds, bar, winch, roof racks etc.... Fuel quality doesn't make any difference, the snorkle got me an extra 20-30k per tank tho! If your going to drive it hard it will guzzle more juice than you can poke a stick at!

Unread postby mudman105 » January 15th, 2012, 12:33 pm


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Re: Stick with the 1HZ or get a 1FZ?

:eek:
Last edited by bucky1 on February 23rd, 2012, 9:45 am, edited 1 time in total.
Toyota Landcruiser FZJ105 4.5Ltr Auto.Pacemaker headers & 2.5" exhaust
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Unread postby bucky1 » January 17th, 2012, 7:43 am


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