How come<<<<<<<

[threedogs]

We all know and read about the ZD30 and its "problems" ,
how come we never heard about the Navara D22 having the same problems.
As far as I know if you buy a 2nd hand D22 the zd30 would be the pick of the bunch over the 2.5ltr
Is it the same motor???
Is it the extra weight of the patrol that causes the "problem" or state of tune.??
If doing a motor swap would it be better to get one from a D22 than a GU ???

[Hodge]

Before the patrol I had a 2.5L 2010 D22. They are a completely different engine/block, the whole lot... Believe me, the pick of the bunch is the 2.5L. I was worried when I got it, regarding the power, but this thing had balls...
Navara's with the Zd30 suffered same issues as the zd30 patrols.

[Hodge]

http://www.nissanpatrol.com.au/forums/attachment.php?attachmentid=56587&stc=1

[threedogs]

Ive never heard of the 3lt suffering the same problems , but even though I did like the Navara I didnt follow its journey so to speak.
Yeah Ive driven the Brown Davis D22 that Kevin drives, its chipped etc and goes very well indeed

[Bigcol]

the ZD30 in the Navara's is the same
however, the air intake & MAF sensors are different
also the turbo is slightly different

I want to know why the took a great engine out of the Navara, and stuffed it up when they put it in the Patrol

maybe get all the air intake & turbo off the Navara and fit it to the Patrol..............?????

found this from someone else

The Nav Zd and the Patrol ZD are different, Different turbo, no intercooler, different injection system. Very different beast and generally more reliable, but puts out less power as well so not as stressed...

[Hodge]

I was very busy on the navara forum before here too, and it was like deja vu mate... Every second thread was zd30 motor issues, blown up, pump, injectors problems, more or less the same as the patrols as they are more or less the same.
My 2.5L navara responded immensely to egr block and exhaust. It gave it much much more juice in contrast to doing the same on a zd30. I actually miss the car.

[Rock Trol]

The Navara ZD30 did not have a vgt turbo. Their turbo had a wastegate to control the boost. Most problems are probably related to this on the patrols. They are also lighter and would probably have different gearing.

[threedogs]

I wonder if Mudski can say what difference is in the MAF.
so same motor so we think well 90% the same then the intake is difference
there are two navara's in my street but both are 2.5lts jobs , GGRrrrrrr.
I might see if they have a workshop manual I can have a look through.?

[Hodge]

I think I actually have a 2.5 manual. Let me see if i can dig it up.

[threedogs]

might unlock the key to the mystery,,,,lol small tuning values etc.

[the evil twin]

If Rocktrol is correct IE the Turbo's are different and the main NADS component is Dawes and Needle which pretty much makes the factory VNT system now perform like a waste gated Turbo... would that not be a significant point (assuming NADS actually does anything)

That doesn't explain Hodge, who has obvious extensive knowledge of the Navara, calling them as having similar issues or why the same engine with the same turbo and the same MAF mysteriously drastically reduced the prevelance the #3 or #4 melt down after a couple of years.

What I am getting at is every point has a counterpoint so good luck with the sleuthing.
Don't know what will come of it but as prev mentioned an interesting path to pursue

[threedogs]

from what I know from ppl in the trade was that the ZD30 couldnt handle the extra weight of the patrol.
Evident by the towing problems some encounter. Id like to see the state of tune that a Navara zd30 has compared to a GU state of tune.
Hopefully Hodge can see some differences in the manual, Ill shoot out a few emails and see what I can come up with as well
but really did not know Navara had the same problems

[Rock Trol]

I do not think the navaras grenade ate the same rate as the patrols. Things like pumps would suffer the same issues. Also the ecu would be monitoring similar things on both engines. All engines types do have failures though so there are bound to be some 3 litre navs that have melted pistons, just like other makes. Also a lot more navs sold compared to trols.

[the evil twin]

I do not think the navaras grenade ate the same rate as the patrols. Things like pumps would suffer the same issues. Also the ecu would be monitoring similar things on both engines. All engines types do have failures though so there are bound to be some 3 litre navs that have melted pistons, just like other makes. Also a lot more navs sold compared to trols.

Excellent point... the 'number sold' or sample population for the 'grenaded' stats base, I hadn't thought of that

[threedogs]

May be just maybe the D22 maf might be better for the Patrol
Not saying to try it but it may have better values in it

[paulyg]

About 2 years ago I went to the Flinders Ranges, While I was there I saw quite a few Patrols with the ZD30 towing quite large vans.
I didn't get to speak to the owners, I was able to have a quick look when they were parked, none of them had gauges so probably no nads.
Maybe the number with problems is small in relation to how many were sold.

[ova50]

When I had problems with my Maf, the specialist initially told me that the Maf in my Patrol was from a D22 Navara.
After he investigated further he told me that they were the same part number.

[threedogs]

All D22 Navara's were manuals too I think.
if so take autos out of the equation

[Hodge]

That doesn't explain Hodge, who has obvious extensive knowledge of the Navara

Extensive? Far from. Just forwarding my experience from a navara forum I used to roam. I clearly remember when I bought my d22 2.5L, and began forum-ing, and realized how glad I was to have got a 2.5L instead of a 3.0L due to all the issues.
Maybe the problems on the nav zd30 and patrol zd30 are not mirror images of one another, but they do have similar properties.

@threedogs

I had a quick look TD, could not find my manual. Must have been on my old laptop. But I did have it as I gave a copy of it to the bloke who bought my D22, on a usb stick. I will have to look through a ton of usb sticks i have when I get a chance.

[Clunk]

So TD, why dont you join the navara forum and find out? But yes ive also heard quite about a fair few ZD30 Navaras grenading



I am not a number, I am a free man

[threedogs]

So TD, why dont you join the navara forum and find out? But yes ive also heard quite about a fair few ZD30 Navaras grenading



I am not a number, I am a free man

because it was hard enough joining this forum

[Maxhead]

So TD, why dont you join the navara forum and find out? But yes ive also heard quite about a fair few ZD30 Navaras grenading



I am not a number, I am a free man

TD joined 3 hours ago and is now upto 12984 posts :) ...most about the maf

[the evil twin]

TD joined 3 hours ago and is now upto 12984 posts :) ...most about the maf

... and adding extra earth straps

[Hodge]

Was over at my cousins and over a few beers, and suddenly I remembered he had a zd30 d22 back in 2004-2005 and he lost it to nissan for a month.
Hes not the type to nose around technicalities so just handed over the car, and said fix it. So didnt remember what went wrong. He still had the receipts in the garage from F. gully nissan, and we pulled them up. Yep, engine was re-done under warranty due to failure of piston 3&4.
There was other gibberish on the paperwork i didnt understand.
Pistons 3&4 melting sound very very familiar ladies and gentle men.

[Hodge]

... and adding extra earth straps

...And miscellaneous, but interesting eBay finds...
some of which I have personally proceeded with a purchase...

[mudski]

The 2.5's have their fair share of issues too. Mostly fuel related from what I have been reading. My neighbor across the road has a D40, he had issues with starting, idle and acceleration. Took it too Nissan, they had NFI, took it to Turbo Engineering and was told it would cost 7k and there was no guarantee they could fix it. Lol. They were going to just replace a part one by one, until the issue stopped. Anyhow, we did some digging around and researching and found others with the same issue. Fuel pressure relief valve on the rail was a bit dodgy. The spring loses its tension apparently and then messes everything up. A washer is inserted into the rail where the spring sits to add that little more pressure and bam! All his issues gone. All done in the driveway too! Now why can't the "experts" who do this shite everyday, find this?

[Rock Trol]

Modern diesels. Gotta love em!

[MudRunnerTD]

Same Topic but different........

The D4D in the Hilux and Prado has the same reputation in the Toyota World as the ZD30 has in the Nissan World. Nearly as many have gone bang. Haters gunna Hate.

[Rock Trol]

I have heard some bad things about the D4D injectors. The early ones tended to fail (leaking seals) or could over fuel the car and it would go bang! Not sure if they have been fixed or not.
Manufacturers are upping rail pressure for more power and cleaner emissions as well as injecting fuel late in the combustion cycle to increase exhaust temp to help the cat burn particles. Euro 5/6 is just around the corner for us so I don't think they will get any better. The ZD30 is about as complex as I am willing to go (in truth too complex already) unless new technology emerges that cleans up the diesels without increasing temps and pressures in the engines.

[Winnie]

Same Topic but different........

The D4D in the Hilux and Prado has the same reputation in the Toyota World as the ZD30 has in the Nissan World. Nearly as many have gone bang. Haters gunna Hate.

Yes it does. I have driven a mates D4D Hilux offroad and it is pox!!

[threedogs]

A lot of probs with the new shape lux and the D4D motor

[gaddy]

................
56779

[threedogs]

Geeesh even the tubs crack , my mate is in denial about his Lux
saying Im always picking on him, WT ,,told him to pick up any 4x4 mag and read it for himself,
He did and changed his injector washers still claiming nothing is wrong.
Even the tie rod end on a Lux is as small as a little finger, hit a decent pot hole
it will break and send you off road in a big way. I dont like LUX's anyway

[katwoman]

Stick to 'old skool' and you can't go wrong. Give me a dumb diesel any day.