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Flogging the ZD30 horse once more

Engines and Engine Systems

Re: Flogging the ZD30 horse once more

Postby Johann 1984 » 24 Jan 2017 13:19

In case of an engine rebuild: can one fit a brand new engine in it's entirity instead of overhauling the old one?
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Re: Flogging the ZD30 horse once more

Postby AT.Patrol4.2D » 24 Jan 2017 15:09

Hi,

I am going to add my 2 cents to this debate. If you look at why the 4.2 diesel just keeps on going, it is because of the filtration systems on it. I have seen on the hardbody, the airfilter is flimsy, oil filter is very small, and diesel filter the same, thus leaving the engine open to easy factors of abuse. Is this lack of filtration not partially to blame? So, for me, I would definitely invest in upgrading the filtration system, particulate filter inline with the current diesel filter, and maybe an added snorkel with cyclone filter on top. Then, change the oil and filters every ten thousand km. I have one of these particulate filters on my Isuzu, and one cannot believe how much rubbish passes through the standard factory filter. This would directly mess up the injectors.

Also, one has to remember that the GU is BIG, and, although the 3.L makes adequate power, it is not made to travel all day at excessive speeds, rather keep a slower speed at lower RPM and keep those egt's at bay.

I have not heard of many blow outs on the 3L diesel after 2006, and would definitely look at the CRD when its time to replace the wife's Benz.

Just one more note, I have just rebuild a 80 series landcruiser 4.2diesel, with only 139 000km on it.....oh, and I am the third person rebuilding the motor. It happens to all manufacturers.

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Re: Flogging the ZD30 horse once more

Postby Peter Connan » 24 Jan 2017 17:40

Johan, honestly I think you are probably right. A bad reputation is unbelievably difficult to fix.

But you are obviously worried about it, and how does one enjoy and trust a vehicle under those conditions?

From a practical point of view, I still say, fit a madman, try and get some idea of what EGT's you have been running, and make your decisions from there.
If you can't get it over 600 now, the chances are you have never gotten high enough to do any damage.
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Re: Flogging the ZD30 horse once more

Postby JoshJ » 25 Jan 2017 19:28

It really needs alot of hammering to get it to that temp. You have to put in effort. Keep your oil changes and services regular and on schedule. Keep an eye on EGT's. And you will be fine.
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Re: Flogging the ZD30 horse once more

Postby JoshJ » 25 Jan 2017 19:32

Another thing. As much as we love the 4.2's, they are like any other turbo diesel. If you do not take care of them, they will fail. Most of the guys here has at some point overhauled there engines on there 4.2's. Or bought them broken and fixed them up. :mytwocents:
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Re: Flogging the ZD30 horse once more

Postby Kagiso II » 25 Jan 2017 19:39

EXACITILLY Josh .. The 4.2 I have now starts overheating for nothing. Had the rad water analyzed, and it has CO2 gas. I O W, the gasket OR the head is cracked
KLOMP geld wat 'k nie het nie .. nou sit se ek vir self .. Ek moes AGAROB gehou het. Of Boezman .. Daai twee ZD 30's loop nog
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Re: Flogging the ZD30 horse once more

Postby Tinus lotz » 25 Jan 2017 20:04

Johann 1984 wrote:In case of an engine rebuild: can one fit a brand new engine in it's entirity instead of overhauling the old one?

I would rather fit a td42 staight in there one time than spend the money on a di 65k and you are sorted for many more km Frans has done a few and its a straight bolt on ....
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Re: Flogging the ZD30 horse once more

Postby Tinus lotz » 25 Jan 2017 20:05

But if it is not broken just monitor and drive it ....... :thumbup:
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Re: Flogging the ZD30 horse once more

Postby Michael » 26 Jan 2017 07:57

Oom Mac, dis waar wat oompie en Josh se.
N diesel moet na gekyk word anders gaan dit baie geld kos op die ou end......dis die een nadeel van n diesel.

Wil net by voeg, ek het Agerob se head ook weer moes doen na oom hom verkoop het :oldtimer:
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Re: Flogging the ZD30 horse once more

Postby Alex Roux » 26 Jan 2017 08:25

Kagiso II wrote:EXACITILLY Josh .. The 4.2 I have now starts overheating for nothing. Had the rad water analyzed, and it has CO2 gas. I O W, the gasket OR the head is cracked
KLOMP geld wat 'k nie het nie .. nou sit se ek vir self .. Ek moes AGAROB gehou het. Of Boezman .. Daai twee ZD 30's loop nog



Ek weet niks, maar, moet daai 4.2 van Oom nie 'n inter cooler kry nie?
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