Thread: Fact or Fiction

Originally Posted by PAT303

,there is NO faults with the ZD30 engine,the fault is in the engine management system that controls the engine,end of story.

Surely they are two sides of the same coin? The engine won't work without the engine management...

The one I looked at was running with no boost control and no fuel metering control so you can't blame the engine for that,you can't blame the ecu either as it has no redundancy to deal with the problem.For all LR's faults they do have the ECU's done right,Toyota's just stop and can't be restarted and Nissan don't have anything at all. Pat

Originally Posted by BigJon

Surely they are two sides of the same coin? The engine won't work without the engine management...

Certainly. But if they'd done a better job of engine management there'd be no stink.
The lower power ZD30's (wastegated turbos etc) used in the navaras appear boringly reliable but they have a different engine management system.

The even smaller and more highly stressed YD25 motors seem to get along just fine too.

How many bottom end failures on TD5's has anyone seen on this site.Remember many of these engines are 10yrs old.....
And i bet many of them don't get serviced as often as they should be.

Buggar all



END OF STORY

AGAIN

IVe seen 7 stuffed td5s total

3 were bottom end failures bought about by the oil pump bolt deal,
1 was a no oil deal after a ruptured rear main
3 were pushed on after a cooling system faiure resulting in 2 done heads and 1 done head and siezed block.

I dont understand the implication that the TD5 is a small overstressed engine...

It was designed and built to produce the power and torque it does. We are not talking a 2.5ltr NA engine that has had a hackney turbo installation done and now produces upwards of 50% more power and torque than the original design allowed for.

If a TD5 is chipped and intercooled and exhausted to within an inch of its life and produces upwards of 200kws and ellevety billion NM's then i think its fair to say that its a highly stress "small" diesel. But thats not apples for apples is it??

oh its got a computer....that must be bad right...?

I'm with Dave there, only Td5's I've seen fail had direct causes, like oil pump bolt falling out, severe overheating, etc etc. Not 1 I have seen has just 'stopped' for no reason.

I haven't yet seen a dog of one either.

NONE with an oil consumption issue, NONE with any internal or valve train noises, only 1 with premature cam hardfacing wear. A few rear main leaks and head gasket/ dowel problems, the odd turbo failure from neglect, BUT these are a tough engine. Try extracting 450Nm and 160KW from a 2.8 (3L) or even a 3.0 (5L) Toy-mota and see how long it lasts. Actually, it'd never happen in a fit.

These engines are well designed on the whole, some have a few silly issues but nothing that isn't now quite well documented.

Sure it may have a computer driving it, but even the computer controlled Jap stuff (Maybe with the exception of the Mitsu Di-D) can't come close in terms of reliably punching out these numbers.

I may have a Tdi and a 4BD1t, but that is my personal choice. I would have a D2a Td5 auto in a blink if my RRC ever became untenable. (perish the thought)

I say 'Bah' to all those Td5 detractors

JC

Originally Posted by justinc

I say 'Bah' to all those Td5 detractors

JC

I'll stick with my zuzu