Engine options for a 75 series?

[Wayne J]

Gday All,

I have recently bought a 1985 75 series tray back, with 3F petrol engine.

Whilst I find the performance of the 3F just bearable (its not too bad except for overtaking/highway cruising), the real problem is the fuel consumption - my first long trip used a full tank in approx. 360KM, which is at least $100 worth of fuel...

Now, from what I have read, there are reliability issues running gas on these engines, is that correct or are there solutions to this?

What about converting to the EFI 3F - worth bothering with?

Aside from the 3F, I'm also open to this idea of an engine swap - however I currently lack the space and experience to perform the work myself. With that in mind, is there anything out there possible within a budget of say, $5-6K?

A bit more power would be nice, but much more so better economy...

How about a 1FZ-FE, or am I dreaming given my budget?
Diesel perhaps?

Thanks in advance for any helpful replies, cheers

[briney]

Queensland Motor Recyclers are selling 4BT cummins engines with an adaptor to suit landcruisers. i have one of these engines in my F100. it gives me 10L/100 k's and pulls like a 14 year old. the only drama i can see is it would need to be seriously geared up as these engines like around 1800 rpm at highway speeds.

[off-road]

Sell it. Buy a diesel 75 series and either turbo it or fit a complete turbo diesel engine from a station wagon.
There a plenty of motors you can put in the petrol 75 you have ranging from small block chev ,gen 3 chev , Toyota v8 , or even a 2JZ -GTE.
All will increase performance and cost plenty and may or may not use less fuel.
The cheapest option is diesel which will guarantee savings at the pump but to get performance you will need the turbo.

[TooF]

1fzfe i can tell you isnt cheap to run, one of our work cruisers here is a 1fz and its horrible on fuel. diesel will make the best truck in terms of trucking. the petrol will be a bit more pleasent to drive around in.

my pick would be one of the 1hd/1hz engines. facotry fitment so they will bolt up without too much hassles. being a toyota enigne parts are avaliable in every nothing town in the nation. and well... they border on indestructable.

[takai]

What about the 3RZ?

[M.J.H]

EDIT Double post

[M.J.H]

What about the 3RZ?

In a Landcruiser????

Could probably fit two of them in there and still have room for turbos etc.

[TooF]

yeahprobaly a shade on the small side/ works a treat in the hilux (ive got one) but for the cruiser id be going the 6. or heavy duty diesel 4. there are suitable factory fitment options that id be going for ie the 1HD or 1HZ

[takai]

But surely it woudl be better than the 3F

[Wayne J]

Queensland Motor Recyclers are selling 4BT cummins engines with an adaptor to suit landcruisers. i have one of these engines in my F100. it gives me 10L/100 k's and pulls like a 14 year old. the only drama i can see is it would need to be seriously geared up as these engines like around 1800 rpm at highway speeds.

Sounds like a real stump puller
Do you happen to know the power figures for the 4BT, also rough price?
I had no luck finding that info anywhere.
Plenty of discussion on the engine itself to found though!

Cheers

[Wayne J]

1fzfe i can tell you isnt cheap to run, one of our work cruisers here is a 1fz and its horrible on fuel. diesel will make the best truck in terms of trucking. the petrol will be a bit more pleasent to drive around in.

my pick would be one of the 1hd/1hz engines. facotry fitment so they will bolt up without too much hassles. being a toyota enigne parts are avaliable in every nothing town in the nation. and well... they border on indestructable.

1HD-T is good for 120KW/360nm which sounds pretty alright. Would I get away with my existing gearbox though?

Cheers

[mrshin]

http://www.marks4wd.com/products/eng...fj70-index.htm

Here's a starting point to give you an idea of what people commonly fit. I have heard many opinions on these, especially the V8 Chev Diesel, some wildly positive, some a bit less passionate, but at least it gives you somewhere to start for ideas.

[boxh34d]

4BT's start at around the 120HP mark, but its at very low RPM. They are very common in Gensets where they run at 1500RPM.
There are plenty of shops around that can squeeze more out of these with injector / pump tuning, as they aren't real stressed from the factory.
the only thing is they aren't as smooth as a jap 6, so engine mounts may need to be thought about to cope with the vibration.
At the end of the day, its about 10K for a brand new engine and conversion kit as mentioned by briney, which will need diff ratio change to drop RPM, or 8 - 10K for a good second hand 1HD series engine to bolt straight in no real changes needed.
I wouldn't suggest putting a Chev petrol in for fuel economy reasons, and although I have never owned one, I wouldn't put a chev V8 diesel in their either.

[Hurricane]

im building a 308 for my fj60 could do something like that

[briney]

i have heard good and bad about the V8 chev diesels. they are bad for breaking blocks and cranks apparently. 4BT's start at 105hp/260 ft/lb. this is what i have. the aftercooled ones ( either air/air or jacket water/air. ) are the 120hp/290ft/lb ones. the gearing i saw was the major drama. qmr want $5k from memory for a complete good runner with the 'cruiser adaptor plate. i bought a good runner from them, and i had to replace the crank thrust washer ( no big deal. ) and some gaskets. i am a member on 4BTswaps.com, it is a goldmine of swap information. a few people on there are doing 80 ser. swaps as well. i reckon the cheapest way out if you have an FJ75 is to find a complete rusty or rolled diesel 75 and swap the gear over. sell off what you don't use and probably profit. that or just buy a diesel one.

[Wayne J]

i have heard good and bad about the V8 chev diesels. they are bad for breaking blocks and cranks apparently. 4BT's start at 105hp/260 ft/lb. this is what i have. the aftercooled ones ( either air/air or jacket water/air. ) are the 120hp/290ft/lb ones. the gearing i saw was the major drama. qmr want $5k from memory for a complete good runner with the 'cruiser adaptor plate. i bought a good runner from them, and i had to replace the crank thrust washer ( no big deal. ) and some gaskets. i am a member on 4BTswaps.com, it is a goldmine of swap information. a few people on there are doing 80 ser. swaps as well. i reckon the cheapest way out if you have an FJ75 is to find a complete rusty or rolled diesel 75 and swap the gear over. sell off what you don't use and probably profit. that or just buy a diesel one.

Thanks Briney.
You know, I have been coming around to a similar conclusion that maybe I ought to be buying another whole wreck and/or complete new project vehicle, and gradually rebuild it from the ground up if need be. That way my ute won't be off the road (in a bad way!) for ages and I can do it properly how I really want it.

Trying to get everything I need in one fell swoop ain't gonna happen and you can be sure there will be unexpected problems in even a so-called straight forward engine swap...

In the meantime I might just put the 3F on gas, and maybe EFI if I can find it, and improve the intake and exhaust. It seems a much simpler option right now

But I have to say, I do like the sounds of the 4BT, and the price isn't too bad at all.

Cheers

[Wayne J]

Thanks also for all the other replies everyone.

If I did opt for a petrol V8 it'd have to be a later EFI model on gas. Based on my experiences owning a 2F previously and various carby V8s, I think most modern V8s should have better economy over the 2 and 3Fs, some being better than others of course.

The 4BT does sound worth exploring - regardless of engine, I reckon I really need to see some of these conversions in the flesh to get an idea of what they are really like in Landcruisers performance-wise etc.

Thanks

[roadkill]

Hi,

My dad's old 60 series 3f was gas/petrol and i would highly recommend just simply going gas. His used to get 20l per 100k's for over 15 years!! That works out to be about $50 for your 360k's. Even your turbo diesel 10l/100k's works out to be over $60 for 360k's.

Food for thought.

bEn

[Wayne J]

Hi,

My dad's old 60 series 3f was gas/petrol and i would highly recommend just simply going gas. His used to get 20l per 100k's for over 15 years!! That works out to be about $50 for your 360k's. Even your turbo diesel 10l/100k's works out to be over $60 for 360k's.

Food for thought.

bEn

Hi Ben,

Thanks for the reply mate, and yes I think you're right about simply gassing the 3F. It'll almost halve my fuel costs in one stroke. The 3F isnt all that bad off-road or around town where I live to be honest. It really only lacks accelerations/overtaking power really - but I'm also used to my R34 Skyline with 280RWKW, so anything else seems lacking anyway really . I will make a point this week of finding a suitable gas installer and try to arrange for the conversion to be done. Cheers

[2jzhilux]

what about making it dedicated gas and making up a turbo manifold and turbo the 3f