Outer Limits 4x4 Board

GQ or GU?

How do you find them, are they really gutless???

If so is there much that can be done with them to improve performance?

Thanks,

Martin

i dont want sound to biast.

but the 2.8 just have a lot of problems i.e. gutless and if worked hard they fall apart.

they are worse version of the 3L they can be chipped but little gain, if you were going to use this for touring it will be worked hard even with stock size tyres but the weight that you carry will kill it.

the gear box in the 2.8 is different as its a lighter box.

if you found a highkm 2.8 which they're are few around in a GU buy it and for around 8k you can have 4.2 turbo intercooled diesel fitted.

i have seen these go for under 20k with 200k+ on the clock.

to answer the other question GQ/GU, the main difference is that GQ doesnt have computer where the GU does.

They suck !
They have a VERY fragile head, limited power and no torgue.
The only reason i have one is that i cant get the TD42 here in europe.
A friend of mines has blown 3 RD28T engines in the last year, but to be fair they have all been beaten up
My advice is that you go with the TD42 instead, i would if i could.

Hey Morkz, does 8k buy you a new 4.2L TD or a re-conditioned one?

Thanks,

i have a 2.8TD.
gutless it is indeed. has a dead spot right at the start of the rev range, so it takes a bit to get going.
im having engine problems now and its only got 84K on it.
thinking i may put in a 4.2 in it, but the ball and chain (the wife) wont allow it.
i would probably buy a 4.2td if they werent so expensive.
around here they go for 40K

mabsydney wrote:Hey Morkz, does 8k buy you a new 4.2L TD or a re-conditioned one?

Thanks,

will buy you one out of a wreck low kms

u could have a reco one done for around 10k fitted

I have a 1997 GQ 2.8 TD with 200,000 on the clock and its never missed a beat. The only things that have been replaced are the oils! Its been a very reliable truck and I been very happy with it as a touring vehicle. Its been across the Simpson, up the Cape, countless trips to the Vic High Country. As with all GQs, they are very capable off road. I have only ever experienced problems in really soft sand over in Robe with a lack of power.

One thing I can say about them is they are a bit sluggish on the highway, and there is that dead spot at low revs mentioned perviously. As long as you drive and use the turbo and know where you power ranges are in each gear, you wont have any problems. I would be weighing up what you want it for and making a descision based on that.

As for the GUs, I have heard some conflicting stories.

A mate has one and seems to be OK on noral terrain, but is crap as soon as you hit the sand.........we call him twin peaks now coz he needs to start from to dunes back to make it up one

i suggest u buy a GU one high kms for heaps cheap and do a 4.2 diesel swap ..

say 18k for a GU 2.8 with 200thou + kms
and 6k for this turbo'd intercooled 4.2 diesel AND gearbox
3km to fit it
bargin!

perfect motor
http://www.outerlimits4x4.com/PHP_Modul ... hp?t=39981

thx for the replies....

I have another q for you guys........

I am also considering an imported (from Japan) swb gq 4.2L diesel.......which I would turbo and intercool......

Is the Jap gq the same spec as the Aussie model? and would the 4.2L D be the same motor, minus the turbo as the one we get over here?

Thanks,

Martin

Mines got 220000kms on the clock never missed a beat
Changed oils and timing belt `And still OE clutch

Thats right 220000kms on standard clutch

3" EXHAUST FUEL PUMP JUICED UP AND FROUNT MOUNT
INTERCOOLER GOES VERY WILL AND PUTS MY OLD MANS GQ4.2 DIESEL
TO SHAME

More than welcome to test drive it and find out your self .

a mate of mines dad has a gu 2.8td and its got 140,000 kms on it and its running better than ever a while ago he got a bit of water in it and its still ok, he was gonna get a chip for it but he said he is more than happy with it, this is coming from a guy that has driven xr falcons and ss commodores for ten years. my mate isnt a nissan man but said he will buy a gu anyday and make it a 2.8td, for the price they go for (bout 24k) they are a good car.

my old man has a 2.bLTD GU, and all we have done to it in 140 000k's is timing belt, oil and filters, clutch and Duelmass flywheel, it is slugish off the mark, but that is more due to the Duel mass flywheel....(expensive) it runs 35's and has 4.88 diff ratios, and will tow the camper trailer happily, you just need to keep it in boost, and there will be no dramas.

morks, you don't know what you are talking about. "A worse version of the 3L". The 2.8 is an RD28T which is derived from the L28 petrol slant motor. The ZD30 is a 4. In GQs it came with a smaller tranny from 300ZX cars. Don't make comments if you don't know what you are talking about.

Tatra8x8 wrote:morks, you don't know what you are talking about. "A worse version of the 3L".

In my opinion yes.

The 2.8 has to rely on gearing to make it drivable.

The older 2.8 in the GQ was a better motor because it had no electrics as in the GU model.

Tatra8x8 wrote: The 2.8 is an RD28T which is derived from the L28 petrol slant motor.

Well I didn’t know it originated from the L28 petrol i was told it just different version to that of the GQ model but with electrics.

Tatra8x8 wrote:The ZD30 is a 4.

Yes i know this a 4 cylinder motor what’s your point ?

Tatra8x8 wrote: In GQs it came with a smaller tranny from 300ZX cars.

I thought i specified that it did come with a lighter box (tranny) and if you read at most places these gearboxes have problems

Tatra8x8 wrote: Don't make comments if you don't know what you are talking about.

Hey this guy asked for our opinions so i have no idea why you are saying i should not comment on this. Before i choose a 4.2 i looked into the 2.8 and i was told to stay clear of them of there inherit problems.

I suggest you call linquip diesel and ask them how many GU patrols they have re-powered that used to have a 2.8 motor in them. Basically that’s all they do.

And yes i stil think the 3l is better than a 2.8 however i don’t like either and that’s my opinion.

I also stated I don’t want come across bias a the top of the page

I have a 1998 2.8 GU which has just clocked 287,000km. The only things I have changed is the oil and filters and timing belt every 100,000km. Still running the original clutch. I run 35's on it and have towed a 27' caravan around Oz twice. It has been to the Cape 4 times and across the Simpson 3 times and to Double Island Point and Fraser Island more times than I can remember. Loves the sand and has never even looked like getting stuck. It does suffer from turbo lag off the mark but once up in the revs it will pull all day. The GU replaced a 1996 GU 4.2 and I can guarantee the naturally aspirated 4.2 wouldn't see which way the 2.8 went!!

morks, you don't know what you are talking about. "A worse version of the 3L". The 2.8 is an RD28T which is derived from the L28 petrol slant motor.

I though it was derived from the LD28 diesel

to extend form my previous post, about my old mans DR28t GU, i just took the main muffler out and had some straight pipe replace it, it goes a little bit better, boost is comming on a tiny bit earlier, it also sounds better and has a better note,

we are looking at replacing the system now with a 2.5" straight throu, without mufflers, a