1HZ comment

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I'll offer this public service-

All of you good folks switching to the vastly superior Isuzu or Cummins motors in North America, feel free to send me your crapass HZs. I will put them to good use and you'll feel better that the POS will be a monkey off your back. ;)
 
In my mind, this begs the question of,

How hard is it to get parts for the 1HZ?

I would think that would be the ultimate desicion maker, for me at least.

Here in the US, you can get parts for the 4BDT1/2, at the local chevy dealer, probably even Autozone.
That makes the 4BDT very appealing. To me at least.

I thought that the 1HZ was giving MPGs in the mid to high 20's??
Everything I have read about swaps with the 4BDT, says the same thing.

Am I totally wrong here?

I think if parts were easy to get for the 1HZ, it would make it far more desireable.
...aside form the $5k price tag....
 
I'd disagree Rob, especially seeing this vehicle is for Canada. The 1HZ in my experience traveling around the world is still a very common engine but often get an aftermarket turbo put on them.

Another totally unbiased opinion... if relatively easy continued parts support is a concern, I'd suggest a TD4.2TI or just the TD4.2T. Then do what i hear some Land Rover owners do in Australia, swap in a GU drive train. You have full engine and drive train parts support from most Canadian Nissan dealerships, engine parts support from Nissan forklift dealers, and engine parts support from UD Truck across the border. Like the 1HZ, I suspect one will be able to find parts for a long time.
 
Good point for both engines, the parts are available in Canada and to the US, just a phone call away and maybe a three day turn around for the cross border folks.


I have zero expeirence with the 4bdt and would like to drive and spend some in cab time.


I will measure the defenders engine bay and see if the 1hz will fit.


The owner is leaning towards a engine called the Puma from South Africa?

Ding ding, what about the pz.....


Rob
 
All other reasons aside, here's the biggest one:

The 1HZ does not fit in a landrover. It's too long and requires extensive modifications to chassis crossmembers and body work. Same for the TD42.

Landrover engine bays only fit 4 cylinders or small (3 litre) 6 cylinders and some V8s. The Isuzu 4BD1/4BD1T is an excellent fit, they were sold new in landrovers in Australia/New Zealand in the early/mid 80's.

Then you're talking fuel consumption. The 1HZ and TD42 will drink 20% more than the Isuzu 4BD1T and around 15% more than the 4BD2T. If you want to go Toyota then a direct injection B series is the ticket, if you want to go Nissan then a F series is the ticket.
I wouldn't even consider a 1PZ. The landrover 2.5tdi will outperform them in all ways and be a straight bolt in. With the added bonus of being a stronger motor with parts availability worldwide without having to explain to someone who doesn't speak your language what the engine is.
 
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Dougal said:
All other reasons aside, here's the biggest one:

The 1HZ does not fit in a landrover. It's too long and requires extensive modifications to chassis crossmembers and body work. Same for the TD42.

Landrover engine bays only fit 4 cylinders or small (3 litre) 6 cylinders and some V8s. The Isuzu 4BD1/4BD1T is an excellent fit, they were sold new in landrovers in Australia/New Zealand in the early/mid 80's.

Then you're talking fuel consumption. The 1HZ and TD42 will drink 20% more than the Isuzu 4BD1T and around 15% more than the 4BD2T. If you want to go Toyota then a direct injection B series is the ticket, if you want to go Nissan then a F series is the ticket.
I wouldn't even consider a 1PZ. The landrover 2.5tdi will outperform them in all ways and be a straight bolt in. With the added bonus of being a stronger motor with parts availability worldwide without having to explain to someone who doesn't speak your language what the engine is.
Click to expand...


I like simple and with your information it looks like the 2.5tdi is the best option for this rig. The owner was talking about bringing in a new Puma diesel from South Africa, is there any information on this engine as all I could find that it is 2.5tdi?

Rob
 
Radd Cruisers said:
I like simple and with your information it looks like the 2.5tdi is the best option for this rig. The owner was talking about bringing in a new Puma diesel from South Africa, is there any information on this engine as all I could find that it is 2.5tdi?

Rob
Click to expand...

The Puma is a ford engine also used in Transit vans. It is 2.4 and commonrail. Will be a complete pain to get running.

The landrover 2.5tdi came in two versions. 200tdi was the older, 300tdi is the newer. There is also a HS2.8 (powerstroke 2.8) version of this engine made by MWM in Brazil. They are a completely mechanical engine, VE rotary pump and T2 turbo. I believe there were some different exhaust manifolds for discovery vs defender fitment for certain years but I don't know the finer details.
You can also fit the 2.5tdi's to a ZF auto.

There is also a 5 cylinder TD5 engine, but these are electronic control and probably not the ones you want.

If you go past the landrover 2.5tdi in size then you'll have to find a stronger gearbox too. The defender transferbox is plenty strong enough but if you fit an Isuzu/Toyota/Nissan 4 cylinder turbo you need to fit a stronger box too. Isuzu gearbox conversions (bolt in) are available ex australia now.
 
Dougal said:
The Puma is a ford engine also used in Transit vans. It is 2.4 and commonrail. Will be a complete pain to get running.

The landrover 2.5tdi came in two versions. 200tdi was the older, 300tdi is the newer. There is also a HS2.8 (powerstroke 2.8) version of this engine made by MWM in Brazil. They are a completely mechanical engine, VE rotary pump and T2 turbo. I believe there were some different exhaust manifolds for discovery vs defender fitment for certain years but I don't know the finer details.
You can also fit the 2.5tdi's to a ZF auto.

There is also a 5 cylinder TD5 engine, but these are electronic control and probably not the ones you want.

If you go past the landrover 2.5tdi in size then you'll have to find a stronger gearbox too. The defender transferbox is plenty strong enough but if you fit an Isuzu/Toyota/Nissan 4 cylinder turbo you need to fit a stronger box too. Isuzu gearbox conversions (bolt in) are available ex australia now.
Click to expand...

Thanks very much for all that information........

Rob
 
My original idea was to swap a Toyota engine into my 60 series LandCruiser...I had dreams of a 12HT...Mostly dry!

But as I searched for an engine, learned about costs, researched parts availability and discovered what had to be modified to install a Toyota diesel I began to look at other diesel options.

The Cummins was my next idea. But it was, too loud, too rough and too tall. It did have good price, power and availability.

Looked at a GM 6.2, but moved on quickly. Not terrible, but thought there were better options out there.

Next I heard about Isuzu 4BD1/2's. Started by finding the Isuzuswappers site, saw about a million NPR trucks on the road, talked to a truck mechanic who works on the Isuzu's, found parts were relatively cheap and readily available all over North America.

It's a mechanical engine that was designed to push a truck that has a GVW of over twice that of a 60. It's a 4 cylinder, so it fits well. Has a factory turbo and with a 4BD2 a factory intercooler. Gear driven power steering pump, good AC compressor, and vacuum on the alternator. All good and simple things.

Isuzu was the best for me. The work involved to install the Isuzu was about the same as any diesel swap.I did the swap in about 3 weeks of weekends and evenings for around $3,000.00 total including the 1/2 cut NPR I found on mud for a $1,000,00.

I've found the 4BD2 to be very smooth and quiet, no louder than the the 2f on the road. Very good power and fuel mileage of around 20.1 over almost 9500 miles I have driven my swap. This includes all types of driving - on and off-road,

For me, the Isuzu was the right decision.

I am happy to answer any questions about the swap and read my post below signature to see the build of my Isuzu 60.

Doug
002-resized.webp
 
Hey Rob, nice to see you are thinking of doing a Rover swap. I have messed around with these trucks for a long time.

Although I agree that the 2.5L Rover or the HS2.8 is the easiest swap, I have found that a 6 cylinder engine fits just fine with some minor mods. This is a 109, leaf sprung, but it's very similar to a D90/110... I am sure the 1HZ would fit just fine if you moved the trans back a bit. I have been saving a 1PZ for a Rover build, I think it would fit in a stock series (with the short nose).

6BT109...
DSC_8184.JPG


DSC_8187.JPG
 
doug720 said:
My original idea was to swap a Toyota engine into my 60 series LandCruiser...I had dreams of a 12HT...Mostly dry!

But as I searched for an engine, learned about costs, researched parts availability and discovered what had to be modified to install a Toyota diesel I began to look at other diesel options.

The Cummins was my next idea. But it was, too loud, too rough and too tall. It did have good price, power and availability.

Looked at a GM 6.2, but moved on quickly. Not terrible, but thought there were better options out there.

Next I heard about Isuzu 4BD1/2's. Started by finding the Isuzuswappers site, saw about a million NPR trucks on the road, talked to a truck mechanic who works on the Isuzu's, found parts were relatively cheap and readily available all over North America.

It's a mechanical engine that was designed to push a truck that has a GVW of over twice that of a 60. It's a 4 cylinder, so it fits well. Has a factory turbo and with a 4BD2 a factory intercooler. Gear driven power steering pump, good AC compressor, and vacuum on the alternator. All good and simple things.

Isuzu was the best for me. The work involved to install the Isuzu was about the same as any diesel swap.I did the swap in about 3 weeks of weekends and evenings for around $3,000.00 total including the 1/2 cut NPR I found on mud for a $1,000,00.

I've found the 4BD2 to be very smooth and quiet, no louder than the the 2f on the road. Very good power and fuel mileage of around 20.1 over almost 9500 miles I have driven my swap. This includes all types of driving - on and off-road,

For me, the Isuzu was the right decision.

I am happy to answer any questions about the swap and read my post below signature to see the build of my Isuzu 60.

Doug
Click to expand...


I read through your thread several times and was very impressed with your install;), like I said before it is nice to get feed back on the 4BD2. Not sure how available those trucks or engines are here in Canada.

Rob
 
Fromage said:
Hey Rob, nice to see you are thinking of doing a Rover swap. I have messed around with these trucks for a long time.

Although I agree that the 2.5L Rover or the HS2.8 is the easiest swap, I have found that a 6 cylinder engine fits just fine with some minor mods. This is a 109, leaf sprung, but it's very similar to a D90/110... I am sure the 1HZ would fit just fine if you moved the trans back a bit. I have been saving a 1PZ for a Rover build, I think it would fit in a stock series (with the short nose).

6BT109...
DSC_8184.JPG


DSC_8187.JPG
Click to expand...


NOW THATS THINKING OUTSIDE THE BOX:hhmm:.

Rob
 
Fromage said:
Hey Rob, nice to see you are thinking of doing a Rover swap. I have messed around with these trucks for a long time.

Although I agree that the 2.5L Rover or the HS2.8 is the easiest swap, I have found that a 6 cylinder engine fits just fine with some minor mods. This is a 109, leaf sprung, but it's very similar to a D90/110... I am sure the 1HZ would fit just fine if you moved the trans back a bit. I have been saving a 1PZ for a Rover build, I think it would fit in a stock series (with the short nose).

6BT109...
Click to expand...

How much lift have you got in there? Looks like 6-8 inches.
 
Mine is about 2 inches over a factory 1 tonner, although on a 90 you would need about 4 inches of lift. This is with the deep BT engine, with a 1HZ you would have scads of room... But the cyl head would have to be up against the firewall, like a factory 2.6 6 cyl 109.

Note the location of the rim and the bottom of the door, it's not as tall as people think. The 6BT fits really well in a Series/defender, it's all the rest that can't stand the torque...

1%20ton%202.jpg
 
Radd Cruisers said:
I read through your thread several times and was very impressed with your install;), like I said before it is nice to get feed back on the 4BD2. Not sure how available those trucks or engines are here in Canada.

Rob
Click to expand...

Rob,

I just assumed the Isuzu NPR was sold in Canada. If no NPR's were readily available, I guess it's back to anything that works. A big draw for me to the Isuzu was easy availability of engines and parts.

Doug
 
doug720 said:
Rob,

I just assumed the Isuzu NPR was sold in Canada. If no NPR's were readily available, I guess it's back to anything that works. A big draw for me to the Isuzu was easy availability of engines and parts.

Doug
Click to expand...

The NPRs are sold as GMC Forwards in Canada. Pretty common truck, scads of them around here as they all rusted out pretty quick... Incidentally there are more Hino trucks in Canada than in the US, and less Mitsubishi Fusos...
 
Fromage said:
Mine is about 2 inches over a factory 1 tonner, although on a 90 you would need about 4 inches of lift. This is with the deep BT engine, with a 1HZ you would have scads of room... But the cyl head would have to be up against the firewall, like a factory 2.6 6 cyl 109.

Note the location of the rim and the bottom of the door, it's not as tall as people think. The 6BT fits really well in a Series/defender, it's all the rest that can't stand the torque...
Click to expand...

The 6 cylinder firewall was a series part only, none of the defenders have them, the defenders were only V8 or 4 cyl diesel. Did you have the 6 cyl firewall already?

I'm looking at the distance from your hub centre to the top of the front wings. It looks like you're 6-8 inches up on stock.
There are a couple of 4BT series swaps on 4btswaps.com, I can't remember how much lift they were running. The Isuzu needs no lift in a defender, in a RRC or disco it's 1 inch either body lift or pack the front bottomout bumpers.
 
My truck runs a 4 cyl bulkhead...

A 6 fits fine - I have proof, you have, um, an opinion?

:D
 
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