Disco spec

Whats the difference between a 200 td1 and 300tdi my parkers choice gives
the same bhp for both with the same engine size.Is it compression or valve
nos? Some say advoid the td5 engine because it needs electronics to set up
and service....?

Thanks

Capt T wrote:

> Whats the difference between a 200 td1 and 300tdi my parkers choice gives
> the same bhp for both with the same engine size.Is it compression or valve
> nos? Some say advoid the td5 engine because it needs electronics to set up
> and service....?
>

300s got some design refinements over the 200 and some tweaks to bring the
emissions down. They're almost the same engine with a few trivial
differences.

The TD5 is a bloody wonderful engine - drives like a petrol rather than a
diesel and TD5 Discos are rather a lot quicker than 200 or 300s. One of the
magazines had an item on servicing them yourself - as long as the
electronics don't die they're easy, although injector replacements will
cost more than for one of the TDIs due to the TD5 being direct-injection
rather than common-rail which basically means every injector is its own
injector pump.

If you can afford it, get a mid-to-late TD5 - the early ones (up to 2000)
had some interesting problems with the electronics that were worked out in
later models.

P

P.

Capt T" <[email protected]> wrote in message
news:[email protected]...
> Whats the difference between a 200 td1 and 300tdi my parkers choice gives
> the same bhp for both with the same engine size.Is it compression or valve
> nos?

Engines are different. 300tdi must have the timing belt changed and a mod
done. Most are already done though.
Some people rate the 200tdi over the 300tdi saying it is stronger but more
agricultural.
If you can go to it, get a TD5, much better performance over the tdi's.

<Some say advoid the td5 engine because it needs electronics to set up
> and service....?

Most cars these days need some sort of electronics to set up, so what!
So completely dismiss the Disco II TD5 range?
Great off road ability with all the gizmos. Far superior performance and
comfort.
I have had both 300tdi and TD5 autos and the TD5 wins for me.

You could trying posting this on alt.fan.landrover as well.

Martin

On 2005-06-16, Paul Brown <[email protected]> wrote:

> due to the TD5 being direct-injection rather than common-rail which
> basically means every injector is its own injector pump.

Hmm are you sure about that? I think you're confusing two different
buzzwords, direct injection and common rail deal with different parts
of the fuelling system as I understand it.

My understanding of it all is that on a common rail system you have a
pressurised common rail that connects all injectors, the injectors
then open and close electronically using the pressure from the rail to
squirt the fuel in. The alternative as on the 300TDi is that you have
a fuel pump with individual pressure lines to each injector and the
injector is basically a simple pressure valve as the timing of the
squirts is down to the fuel pump. Common rail is more flexible as the
timing of the squirts and the amount of fuel delivered can be tailored
to the engine revs and atmospheric conditions by the ECU while the
older system is much simpler and is mechanically controlled with no
flexibility.

Direct injection and indirect injection refer to what the injector
squirts into, on an indirect injection engine the injector squirts
into a small chamber connected to the cylinder, whereas the direct
injection squirts directly into the cylinder. I don't know the
advantages and disadvantages of either system.

I'm not 100% sure on the above, but about 90%.

--
For every expert, there is an equal but opposite expert

Ian Rawlings ([email protected]) gurgled happily, sounding much like
they were saying :

>> due to the TD5 being direct-injection rather than common-rail which
>> basically means every injector is its own injector pump.

> Hmm are you sure about that? I think you're confusing two different
> buzzwords, direct injection and common rail deal with different parts
> of the fuelling system as I understand it.

He's also confusing common-rail with VW's pumpe-duse.

Direct Injection injects directly into the combustion chamber not into a
pre-chamber or manifold.

Common Rail uses fuel at very (25,000psi+) very very high pressure in the
fuel rail fed by a second pump, the main one being used to get the fuel
from tank to rail pump.

PD uses fuel pressurised to that very high pressure at the injector by one
combined pump/injector per cylinder, in addition to the "normal" pump.

"Adrian" <[email protected]> wrote in message
news:[email protected]...
> Ian Rawlings ([email protected]) gurgled happily, sounding much like
> they were saying :
>
>>> due to the TD5 being direct-injection rather than common-rail which
>>> basically means every injector is its own injector pump.
>
>> Hmm are you sure about that? I think you're confusing two different
>> buzzwords, direct injection and common rail deal with different parts
>> of the fuelling system as I understand it.
>
> He's also confusing common-rail with VW's pumpe-duse.
>
> Direct Injection injects directly into the combustion chamber not into a
> pre-chamber or manifold.
>
> Common Rail uses fuel at very (25,000psi+) very very high pressure in the
> fuel rail fed by a second pump, the main one being used to get the fuel
> from tank to rail pump.
>
> PD uses fuel pressurised to that very high pressure at the injector by one
> combined pump/injector per cylinder, in addition to the "normal" pump.

I'm a bit late reading this but I have news for both of you. The TD5 is NOT
a common-rail as you know it. It is an unit injector system similar to the
Isuzu Trooper 3.0 unit in some ways. Paul Brown has confused the use of the
term 'direct injection' which means injecting the fuel directly into the
main combustion chamber formed in the piston crown, but otherwise he is
correct in that the TD5 uses unit pump/injectors with a low pressure feed.
This type of fuel system was pioneered by Caterpillar and is used commonly
in heavy trucks and plant.
From http://www.discoverytd5.co.uk/td5.htm
Central to the Td5 concept was the adoption of EUI technology. This has
already proved very successful over many millions of miles in large diesels,
such as those used in premium trucks, delivering enhanced driveability and
economy as well as providing a high-confidence route to meeting increasingly
tough emissions regulations. EUI uses an individual camshaft-driven plunger
pump for each cylinder's injector, with ultra-precise electronic control of
the injection period and timing.





Huw

How much money have you got to spend? That will help.

If you are wavering between 200 and 300 then probably condition is more
important. The 300 tdi also came with a new gearbox which, early versions
of, didn't have as efficient lubrication as would have been ideal leading to
premature wear and failure. 200 tdi gearbox is much more agricultural but
tough as old boots.

I have had 2 x 200Tdi 110s and 1 x 300 Tdi 110 and would probably favour a
late 200 over a very early 300 for the above reasons.

If you are looking at late 300 or early TD5 then TD5 is a better car but
some have questioned its low down torque when off-road but, as most don't
get muddy, this is probably not important and, if so, then a TD5 is probably
a better bet.

Have fun
C