Patrol Owners

If you have gone from 265/70 r 16 to 285/75 16 then thats why your lacking power.
At 110 I'm reving at about 2500 rpm.
Accelerator is between halfway and middle I think
Fuel is hard to determine , roofracks, headwind, all play a part in economy.

Do you have all terrain or Mud tyres ?

Hi Wayne,

Max speed, about 160.

Fuel, about 14.5lt/100km.

Accelerator depends on too many variables but mine is nearly always flat LOL!!! seriously.....about half or less in flat country at 110

Regards Trevor.

G'day Wayne-o, I have the same (04 model) TD4.2 and share the same concerns... Case in point; the other day I was driving up a mates driveway in the hills, it's between a 30 - 40 degree angle (maybe more??) and the damn thing nearly stalled on me! I'd only had it 3 weeks by that stage too so got a rude shock. Enough about mine - in relation to your questions, I have a full size ARB HD roof rack on the top and dual wheel carriers with 265/70 R16 Cooper AT's and mine sits on about 2500rpm at 110km/h as well, like SA_Patrol's. In terms of where the accelerator sits though I must admit I haven't noticed - about half to 3/4 the way I think. I'll make a mental note next time I'm on the freeway to check.

In terms of fuel consumption, I've just finished my first full tank since I got it tonight and I got 485 km's out of it city driving - only some 110km/h stuff though but in reasonably hot weather (I live in Perth). That included a "test run" up Greenmount Hill straight after I filled up though so that might account for a little bit - I gave it a bit of flat foot to see if it struggled like my old GQ non turbo 4.2. What a world of difference! Anyway's I hope that gives you something to compare against.

I'm having a 3" turbo exhaust and new dump pipe fitted this Thursday and having it's 60K km service next week too - I'm hoping that will go some ways to alleviating my concerns; we'll see and I'll keep you posted if you like.

Oh, and I plan on putting some 285/75 R16 muddies on it in a few months too... so will be watching this thread with interest on anyone's feedback.

Cheers
Mike

Like the others have said, there are too many variables IMHO, to be able to answer most of the questions.
The 4.2TD does have a reputation for being a bit dohey. The bigger tyres would contribute to this to a big degree.
I reckon I "may" have had mine up to about 160k/h one one occasion.
I've never been able to get my face/eyes down onto the floor of the driver's footwell to see where the bloody accelerator pedal is sitting when I'm doing 110k/h (I hope nobody else tries to do that when I'm on the road within about 5 klm of where they are when they try to do it!!!!! hahaha)........
Fuel consumption: my 4.2TD had a full ARB roof rack, dual wheel carriers and loads of other stuff, including muddy-type tyres, for most of it's life. I used to use 15.5L/100 klm average over the truck's life........used more when pushed hard or towing etc, used less when driven sedately, no head wind etc.

My advice would be to get the pump and injectors "done" as a priority. I bought my GU brand new in 2000 and thought the same thing as you. I took it to a mob (father and son) at Berrima in the southern highlands of NSW when it only had about 20,000klm on the clock. They re-set the injectors and gave the pump a tickle. After the tune-up, a hill I'd had to go up in 3rd gear with a running start, was easily taken in 4th and revving enough to just about require a change into 5th. The injectors do not have their spray pattern set in any way at the factory; this needs to be addressed as a priority.

Air filter needs to be kept clean; snorkel is a great idea for many reason, not the least of which is the 'ram' effect to help get a bit more air into the engine's breathing system.

Exhaust needs to be opened up with a new dump pipe and 2.5 to 3" system and less-restricive muffler (no cat converter).

Hope this helps.

Roachie

GQ Ford Maverick trayback with non-turbo TD42 Nissan motor, 7.50R16 split rim tyres - flat out, "fully overloaded", towing a camper trailer, chasing a drilling rig to catch it before it got to Cue - 165kmh!! Fuel consumption? - Don't look! Black smoke? Don't look in the mirror either!

Same truck - half loaded out of Leonora, on dirt road, trying to catch my non-reflective prospecting mate before he went too far north. into the desert, after he missed my bush camp - peaked at 170kmh! My mate (at the time) in the shotgun seat said he would never go in my truck again! Which suited me fine as later on he 'did' me for a cuppla grand in gold!! I hope he's reading this back in Canberra,,,,,,,,,,

I can clearly remember him screaming at me to stop and let him out or he was gonna jumpo out!! Yeah, yeah - at 90MPH!! Be my guest,,,,,,,,,,He was nearly crying when I finally caught up with my mate. What fun, what a jolly jape,,,

What luck,,,,,,,,,

Bilbo

Wayne, I run 33x15x12.5 at the moment so same size as the 285's just wider
I do 2200 rpm at 100klm I'm not really sure about 110 as i dont normally travel that fast.
Accelerator at 100klm about third
Overall fuel over full tank is usually 16klm/l with a mix of city plus motorway

Almost as soon as i bought the car I put the MTRs off the GQ on (33x15x12.5) and have just put the original tyres back on as we won't be heading bush for a good few weeks and man what a difference! She pulls up hills so much better its not funny so much so I would rather stick with the smaller tyre. I reckon thats where your powers going. It didn't affect the GQ as much for some reason maybe because it was non turbo.

Jim

HI there --

i have the 2000 4.2 turbo diesel - and my little puppy gets to 110 very easily and quickly using both Biodiesel ( 100%) and or dino diesel - as others have mentioned about1/4 to half throtal about 2200 RPM

as for fuel efficiency - totally crap around city ( i get EVERY SINGLE RED LIGHT , even the paderstrian activated ones with no padestrians)

anyway recently done a trip from sydney - bundy - with car fully loaded up with misses - 2 kids - all our gear for 10 days, plus the Waco 80 litre fullystacked. we made it to the qld Boarder on a tank( inc sub) via the new england on the way up - and pacific on the way back ( was about the same )

Now for your power loss - i was having power loss issues also - my RPMS would not go over about 2500 - 3000 when trying to go full noise - ended up being the small filter that is inside the fuel pump ( as told to me from another member of this forum) it was partially blocked preventing unrestricted flow of diesel. maybe this is the problem ? It easy to find just follow the fuel lines from your filter and it will take you to it --- then just undo the banjo nut ( 17 mm and a long extention will be needed) take banjo nut out - and keep the 2 brass washers ( or alamunium) they can be reused - then remove the spring - then using cotton tips try to "dig" out the small filter ( in about 1 inch ) hopefully this is a simple fix and that is the problem. just remember when you put it back together do not over tighten the banjo nut - its those washers that do the sealing - not how many thousands of newtons of torque you can apply - nip it up -- then tighten maybe 1/4 turn - the thread in the pump is brass - so best not over do it

hope this is of some help

Boc

GQ with after market turbo.... last September we did a 3 week trip towing our trailer around the New England Tableland. Top speed, 130kph is as fats as I took it, in an overtaking lane.... had more to go but that was plenty..... 110kph revs at about 2200-2400rpm, accelerator about 1/2 way, fuel consumption;
18l/100ks with roof rack and dirty air filter
16l/100ks with roof rack and clean filter
15l/100k's without rack and with clean filter
14l/100 with load but no trailer

Make sense?

Cheers

Brian

forgot to mention 33 X 12.5": mud terrain tyres.....

"i live in karratha,"

There lies your problem. Mine is a pig on hot days, very flat, and laggy, and on cold days is a totally different truck...

Go a water to air intercooler :)