G'day folks,

I live at Coffs Harbour, in the state of New South Wales, Australia!

I currently have a 2002 GU Nissan Patrol 4x4 wagon. It has the 4.2 turbo diesel engine and 5 speed manual gearbox. I do a lot of touring and camping towing my families 2 tonne off-road camper trailer.

I want to replace the Nissan diesel engine and gearbox and replace it with a Dodge Cummins engine and automatic gearbox.

I have joined this fantastic forum seeking advice on which Cummins engine set-up would best suit my power,torque needs.

I currently have set up my GU Nissan Patrol 4x4 wagon as a touring vehicle and also as an off-road vehicle. We have a lot of 4x4 tracks around Coffs Harbour with very step hills, so i am really chasing good low down torque.

I have been advised that the 5.9 24 valve Cummins engine with the P7100 Diesel Fuel Injection Pump is a good set-up, i am curious to what your opinions and recommendations would be and if you can also explain your reasons why?

Kind regards,

Paul (RLI)

 

I don't think a 5.9 will fit, these engines are very long. And heavy. My concern with the 24 valve engines is the number of bad block castings. The infamous "53" block that cracks behind the turbo charger. I can't say a lot about the automatic transmissions either. Out of the bunch, the 94-95 47RH are the best, but that is just my opinion. They are not electronically controlled and the overdrive and lockup can be easily controlled by simple means. A 4BT might fill your needs. A 4 cylinder, but still can give you a lot of torque with a few mods.

 

G'day mate,

Thanks for your kind opinion!

Regards,

RLI

 

indeed, a 5.9L cummins is very long, very tall, and VERY heavy. a 24v fully dressed with oil and coolant weighs in about 1200lbs by itself. they are an all iron/steel engine.

The length of the engine is about the same length as the 8.0L V10, however it is taller and heavier.

If you don't mind cutting the firewall back a bit, putting stiffer springs in the front, and possibly doing a cowl induction bonnet (hood) for extra clearance.

the bonnet may need to be changed for a 4bt as well. A 4bt is just as tall as the inline 6, and is basically just an inline 6 missing 2 cylinders... definitely shorter and easier to fit into more compact engine compartments.

they can also be turned up quite a bit with injectors, pump tuning, and possibly a larger turbo.

4bt is also nothing to sweep under the rug. they are every bit as reliable as the 6bt, every bit as strong, and they are most commonly found in large delivery trucks like this:

 

G'day jigabop,

Thanks for your advice mate!

PS, please keep your opinions coming!

Regards,

RLI

 

4bt 3.9l with inline injection pump, that is the best engine for your needs.

there are plenty other furoms with what you have in mind, the only one that comes to mind is the 4bt swaps, I have done a few in the past, they are fun to do, but will not just be a weekend project if you are looking to have it done fairly quick.

since you are going to haul and play with the wagon, I would use a water cooled manifold and turbo. you can also mount just about any transmission to these, you can just have an adapter made to fit.

 

I think a 4BT would do great ....and for gearing I think a built 47re would do just fine ....... probably find a 2wd trans and do a np205 divorced T case ..... would make for easy swaps and the np is just about as bomb proof as they come ......

What size tire are you running and what does it currently weigh loaded ..... or approximately if you can give reasonable number ?

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Looks like a nissan "pathfinder" american equivalent to what u have ......... what size diesel comes I these ?

What kind of power do they put out and or what power numbers would u think are good for your needs ?

 

G'day cougar,

Thanks mate,

In the last couple of weeks, i have found someone in Australia that is currently fitting the 5.9 Cummins into a Nissan Patrol wagon. I will keep you all informed.

Regards,

RLI


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G'day mate,

I have just found out over the last couple of weeks that someone is already doing a 5.9 Cummins engine conversion for the Nissan Patrol GU wagons.

The Nissan Patrol GU wagons came with a small 6 cylinder 2.8lt turbo diesel engine, 3lt 4 cylinder turbo intercooled engine, a 4.2 6 cylinder aspirated diesel engine and the 6 cylinder 4.2 turbo diesel engine. They also produced a 4.5 and a 4.8 petrol (gas) engines.

Due to strict emission controls in AUSTRALIA in 2006, Nissan stopped producing the very popular 4.2 turbo intercooled diesel engine and instead stayed with the problematic Renault
3lt 4 cylinder turbo intercooled engine. They have now produced a new V8 petrol (gas) engine for the market.

We are hoping Nissan USA will produce a V8 diesel in the US, if this occurs Australia, hopefully might get to have this engine as well. Cummins at present has entered into negations with Nissan USA to produce a V6 and V8 diesel engines to the Nissan Pick-up truck range.

At present the lads in Australia are pushing the 6 cylinder 4.2 turbo diesel engines to the limits of around 225 to 240kw mark around 300 to 320hp before crankshafts and con-rods start breaking.

A happy medium for the 6 cylinder 4.2 turbo diesel is around the 150 to 200kw or 200 to 250hp

I am currently running 33 inch tyres LT285/75R16 a lot of folks run the LT 315/75/16's.

My Patrol weighs 2.9 tonnes fully loaded 3.2 tonnes

Fuel economy: 14lt per 100ks or US 20 mpg

The following photo is of the Nissan 4.2 turbo diesel engine!




The next photo is when i fitted a large Cross County intercooler to the motor.

URL=http://s1067.photobucket.com/user/RLI1/media/Intercooler/IMG_1720_zpsf2b2b33b.jpg.html][/URL]

The next photo is of my truck



The next photo is of my truck with my off-road camper trailer.



Regards,

RLI

 

Would love an update if you have gone ahead with this as I am about to put one in my GQ.