Monday, Aug 23, 2004 at 10:48
Rossco,
When I bought my GU TD4.2 in 1999, the choice was easy, there was a choice of 4.2 or 2.8....
A friend of
mine however bought his Patrol in 2003 and asked my opinion, so we drove both the 4.2 and the 3.0, although some people say the 3.0 drives better I disagree, I would say it is different car, drives totally different.. I like the laziness of the 4.2 for bush work and the peace of mind (reliability), but the 3.0L rocks in the city as it is fast and agile compared to the lazy 4.2...
With regards to power on paper, what you have to look at which is more important than the power itself is at what rpm does the engine develop that power?
Ie: the 3.0L has a very narrow power band between 3000 to 4000 rpm it sings, but the 4.2 power band starts at 1500-1800 rpm and don't rev it above 3200 rpm because you ain't gone get anymore...
Going back to my friends purchase, we decided that for value for money (back then it was $5 grand) he should go for the 3.0L...
He did, but in a year he has had more troubles than
mine in five years and
mine has triple the kms....
All the problems mentioned in this
forum are true, from the pulley bearings, air sensors, ECUs and engines blowing up, I have seen them all at close range... I have several close friends who bought them...
So in my opinion if the 3.0L was reliable, no problems...I like it, it goes
well and it is excellent value for money... But is it value for money if it brakes down just as you are about to head off on your trip or even worse, during the trip?? And then you have to wait three weeks for the engine to be replaced?
Also, when Nissan replaces the engine (they perforate pistons) they only give you one year or 20000kms warranty, does that tell you anything??
The 4.2 on the other side, it is old technology, lazy etc but goes forever, Nissan still uses it in the civilian buses even in naturaly aspirated form....
Check the workshop manuals for both, you will find the engine tolerances on both, the 4.2 can be machined (ie head machining) exchange injectors, etc...
The 3.0L shows, no tolerances for machining, throw away and replace with a new one, no exchange injectors... etc etc....
I can't understand Nissan's pricing strategy either, but it is what suits you what matters not how much money they make...
Do you know how much money does Telstra/Optus make on each SMS??
Good luck with you choice....
AnswerID:
73663
Follow Up By: Member - Captain (WA) - Monday, Aug 23, 2004 at 11:18
Monday, Aug 23, 2004 at 11:18
Hi GUPatrol,
I can't say I agree with your statement "the 3.0L has a very narrow power band between 3000 to 4000 rpm it sings". Did you know that the max torque of 354Nm (20Nm more than the '99 4.2TD) is developed at 2,000 rpm? And that 80% of max torque is available from 1,500rpm to 3,500rpm?. That, IMHO, is far from a narrow torque band. But the 3.0TD does suffer from low torque just off idle (but "fixed" with a Dtronic).
In the interests of balanced reporting, you fail to mention about the issues of 4.2TD have with overheating (fixed when Nissan put the bigger radiator in with the intercooler) or the harmonic balancer issues. But fully agree that overall, the 4.2TD has had far less issues than 3.0TD.
While the series II 3.0TD had more than its fair share of problems, the series III is
well sorted. There isn't a vehicle made that is problem free and if you look at the sheer number of 3.0TD sold compared to 4.2TD, then you will see % wise there will be more issues even though the reliability is on par. The reputation of the 3.0TD suffered badly because of the series II and many lump all GU 3.0TD motors as the same, which they are not.
Cheers
Captain
FollowupID:
333767
Follow Up By: GUPatrol - Monday, Aug 23, 2004 at 12:41
Monday, Aug 23, 2004 at 12:41
Captain,
I am not interested in a debate.
I am aware of the figures but did you actually put them in a dyno and see how the torque figures on the 3.0L drop quickly once below those rpm?
I am not bagging the 3.0L in fact I like it and on the recent London to
Sydney rally, a friend of
mine towed a support trailer with one of them and when a rally car broke down they were towing trailer and rally car for a while and did a superb job.
I just posted some facts.
About the overheating problems on 4.2s in 190000kms and several tough trips (inc towing)
mine has never overheated...
Harmonic balancer.. Don't know I never had any problems and I never heard more than one example of that.
With regards to sale numbers, count the GQs since 1988 and the Civilian buses and the 4.2 outnumbers the 3.0L.
But as I said, I am not into a debate to find out which one is better....
Will
FollowupID:
333771
Follow Up By: Member - Captain (WA) - Monday, Aug 23, 2004 at 17:12
Monday, Aug 23, 2004 at 17:12
Hi Will,
Nah, not trying to start a debate. I suppose I get a bit defensive of the GU series III 3.0TD, cause it seems to get bagged so much when IMHO I don't think it deserves it.
All of us have different reasons on why they choose a vehicle and it would be a sad day if we all wanted the same one! I hear what you say about the torque curve and agree that it drops quickly at low rpms. But I have a Dtronic and that makes a big difference.
But I should stick to comparing standard engines, not Dtronic modifed ones (the 4.2TD responds very nicely to a bigger turbo and freeflow exhaust and improves it out of sight - more than evens up any difference).
Cheers
Captain
FollowupID:
333792