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Discussion Starter · #1 ·
okay, so heres the story, i went out 6 months ago looking for a 4x4/AWD, that would get me up the beach on my weekends off and is cheap to run,

after purchasing a xtrail, because it is a NISSAN. i have decided that i want to sell it and get something with a bit more power, grunt, and offroading capabilities,

I am currently doing a lot of research on websites, to try and find which engine is better and more capable in a patrol?

Whether the GQ4.2Turbo Diesel, manual, or a GQ4.2 petrol/gas, manual, would be better?

both on fuel economy and repairs,

As i am wanting to do a trip to northern QLD this time next year, i need to start getting the car kitted out,


Any help would be greatly appreciated,

thanks guys:)
 

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nissan
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Petrol will be cheaper to buy and service also.
Dont discount the Auto as well, especially on the beach.
 

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Part of the furniture
nissan
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4,563 Posts
TD42T..

more reliable..
better fuel economy..

you said you wanna travel,
diesel will get you further then petrol.

my 2c anyways..
 

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The nutty professor
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turbo diesel is cheaper on fuel by a long shot , but a petty on gas is comparable although range is limited on gas
 

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What is your budget? Less then $8k buy a petrol/gas more then $10k buy a TD42T. Between 8 and 10 you're looking at either really good petrols or really bad diesels.
 

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nissan
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For power and performance the choice is between petrol carby, petrol/gas turbo and diesel turbo. Turbos cost more to buy,wear the engine out faster and cost money to fix. Petrol carby costs more to run but it is simple. The extra dollars you pay in fuel are less than what you could spend buying and maintaining a turbo. Increase your range with long range tanks (217L without the jerries) Petrol autos use HEAPS more fuel under load with a trailer - I don't know about the diesel autos. Non-turbo diesels are slower but they never die - they just smell that way:) Patient people love them.
 

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id disagree diesels are much more expensive to maintain.
both use close to 10l oil. td42 use 2 filters so an extra $15 there. both have air filters. both have fuel filters which should be changed regularly.
both need valve clearances donen regurlarly.
the only time diesels are dearer than petrols are when injectors or pump need doing.
and a properly setup turbo diesel really places no extra stress on the engine. its only the big power rigs that reduce engine life. and even then its debatable.
 

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KICKEN BACK IN THE BUSH
nissan gq
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I think the FIRST major hurdle for you is
How much do u have to spend ???
No point looking at a ferrarri with a holden budget

Once thats sorted ,youll know what u can get

Do a little search,theres just heaps on here about anything
A quick check
TB42s are getting mid 20Ls/100Ks
Diesels are getting low 10Ls/100Ks

LPG uses upto 30% more volume that petrol,just cheaper to buy

Nothin at all wrong with a good auto,just ensure u run a remote tranny cooler if towing often

Comparing a carb TB42 to an EFI, the EFI all day everyday

Main issue is,the blokes that have the diesels hate the petrols ,and those with petrols hate the diesels
 

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Of cause a petrol will be cheaper to buy.
The obvious reason is fuel consumption, we're talking about twice the rate, or more.
It doesn't take very long, with today's fuel prices, to pay for the extra purchase price.
IE on a recent trip of over 10,000k's in 2 months, the fuel savings are in the thousands, and the cost of oil and filters quickly fade into insignificant!

The other reason is the longevity of the TD42T, with conservative power settings.
 

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Of cause a petrol will be cheaper to buy.
The obvious reason is fuel consumption, we're talking about twice the rate, or more.
It doesn't take very long, with today's fuel prices, to pay for the extra purchase price.
IE on a recent trip of over 10,000k's in 2 months, the fuel savings are in the thousands, and the cost of oil and filters quickly fade into insignificant!

The other reason is the longevity of the TD42T, with conservative power settings.
There are times when the fuel consumption of the petrol is towards twice, mainly slow work on tracks, but most times the difference is not that amount. Travelling in convoy across the Simpson with a turboed diesel series 80 LC and a GQ with a NA TD42 and myself in a Maverick TB42 carby model, I used 143 litres of fuel, and both diesels used 95 litres, which is a 50% difference. On the highway the difference is quite a bit smaller (about 30%) as the petrol engines efficiency increases a bit at higher power settings.

Overall, I think you should count on roughly a 30-40% improvement with diesel over petrol.
 

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I know this argument has been done to death by a thousand cuts lol!!
But with mine on gas I can get say 380km using 80L fill up at 65c litre cost $52
TD42 doing the same k's 380 if it achieved 11.05L/ph that would be $52.50 if Diesel was $1.25L
I know that the figures could vary depending on cost of fuel, and I would agree that the diesel would be better on fuel slogging it out in the sand.
But for everyday driving the running cost with fuel is about line ball.
Servicing costs would be dearer with the diesel as 5k oil changes and filters.
And in the unfortunate circumstance that the diesel had an injector pump failure big dollars.
The biggest problem with TB42's on LPG is the heads have to be replaced at around 250k and it could cost a couple of k's.
I was lucky when mine went and sourced one on here at a good price.
As for long liverty of each engine both tb42 and td42 have had people get over 500k on them.
Mines done 280k and doesn't use any oil between changes at 10k.
Personally either engine is a good choice they are bullet proof.
Edit spelling
 

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I SUNK 1
Nissan Patrol ST GQ30
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Has to be said. get a rb30 engine. cheaper to buy, a couple of mods and its a very capable truck.
 

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nissan patrol GQ
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Main issue is,the blokes that have the diesels hate the petrols ,and those with petrols hate the diesels
I also have a range rover with a 351 cleveland and C10, its runs dual fuel. My prev rangie had a windsor and C4 with a shift kit. the dual fuel rangie was much better on range (20-25% better range) but was not as pokey. the windsor/c4 combo had heaps of grunt but was thirstier than a 360 valiant regal - basically turn on the ignition and watch the gauge head left. :)

I've currently got a LWB with 4.2 petrol and its definitely pokey - in fact prior to getting this one I test drove a late series 1 disco 3.9L dual fuel - it may have been off the boil on tuning, but the troll craps all over that disco.

I'm picking up a shorty next week as a second driver and thats dual fuel. its going to be lighter, but I'll be interested to see what the range is like.

I've got a pertronix going on the LWB as soon as matt processes my deposit..:) so I'll guess I'll have a better idea how much improvement the leccy ignition provides.

Problem is that most of this stuff needs to be looked at long term...

although not comparable as parts are a lot dearer, my mercedes vito cost me $4500 to fix the injectors when 3 of them suffered seating blowback and seized in the block. it was a nice motor, but $4500 at 250,000k's just shouldn't happen with a diesel - its being run in at that number. I know trolls aren't supposed to be as bad, but when diesels let go they can hurt the wallet a bit. If that merc engine had been petrol instead of CDI then I could have swapped out the motor and still had change.

my 2c anyway
 

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nissan gq
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Trav,
I mean man are u serious ?????


Yes the RB30 are the cheaper end of the patrols ,but seriously many have turboed the RB30s and resorted back to the TB42 s

At the end of the day ,standard to standard the TB42 E is the best in the GQ range
(standard ala factory here)
The TB42E are reaching up in the $$$$ like the TD42s (a good one of course)

It really depends on which u want
 

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I SUNK 1
Nissan Patrol ST GQ30
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i was just joking. i hav a rb30 non turbo but modifyed carby and it suits my needs perfectly. hadn't been said so i thought i'd throw the option out there.
 

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I am hearing people saying that TB42 EFI is the best. That's not what I found. I had a TB42 EFI Auto and made the mistake of fixing the auto when it died at 120K. That cost $5K. Then I found that whenever I towed the camper with it, it would die on hills - something to do with the fuel injection settings on kickdown I was told. I couldn't overtake with it no matter what I did. AND it used heaps more fuel than my TB42 carby when towing - like a 747 on take off. It was great without the camper but that's what I wanted it for. Maybe if I'd put a five speed manual in it when the auto died it would have been better. So I sold it and went back to the Mav.
 

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nissan gq
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^^^

Must have been a dud,or maybe it had some issues
Ive got the TB42 E auto,Goes like a cut snake (so does the fuel)
Pulls anyload up any hill (dont even have a remote trans cooler,yet)
Plenty of power,for standard

As for petrol/LPG combos
When i was looking everyone i looked at had dramas
Was better to buy a straight petrol then get a new LPG conversion done
 

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The biggest problem with TB42's on LPG is the heads have to be replaced at around 250k and it could cost a couple of k's.
I recently replaced injectors @ 250000 for $600. We are not talking Mercedes here!
You don't have to be Einstein to understand which fuel is better for motors.

As for long liverty of each engine both tb42 and td42 have had people get over 500k on them.
That statement is a bit misleading, you would have to be stupidly abusive to a TD42 not to get over 500k, in fact many are now clocking over a million!

TB42s are getting mid 20Ls/100Ks
Diesels are getting low 10Ls/100Ks

LPG uses upto 30% more volume that petrol
The above are the realistic figures, not to mention the storage space/weight that LPG tanks consume, something you need every sq cm/kg of when traveling.

I know you were not considering a auto Jamie, so not sure why people are trying to push this. Dalaicamel's example is one of many why they are not the best choice for an off road vehicle:

I had a TB42 EFI Auto and made the mistake of fixing the auto when it died at 120K. That cost $5K.
 

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Discussion Starter · #20 ·
thanks to everyone for the excellent replies, so great reading, so basically i have decided to go with a td42 it seems that it is a bit more expensive to buy in the first place, but fuel, costs are much cheaper,

seeming as though i am trying to sell my xtrail in the high $18000 i want to spend about $10000 on a patrol and some on a few mods,

thanks very much again for all the time and research and knowledge that you guys have helped piece together,
 
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