Thread: ACE as option? And few D2 questions

yes, ACE was an option

V8's perculiar??

if you overheat them the liners WILL slip,,

its the same ZF as in the D1's just with electronic control.
I cant feel the shifts---

Originally Posted by Pedro_The_Swift

yes, ACE was an option

V8's perculiar??

if you overheat them the liners WILL slip,,

its the same ZF as in the D1's just with electronic control.
I cant feel the shifts---

I'll show my ignorance and ask what symptoms will one see with liner slip?

What are prescribed service intervals for V8?

What is reliability of the ACE?

How does the ACE go if vehicle lifted?

We have just switched from a TD5 Auto with ACE to a TD5 manual without ACE.. both with SLS.
Frankly the difference in body roll is not that great, at least as a passenger. The steering response is perhaps a little sharper with ACE but our experience on indifferent country roads is that the very stiff ACE rollbar caused some harsh responses on bumpy corners at speed...

And then there's all that hydraulics and computing to wear out, need maintenance and go wrong.

As for the Auto that is the main reason we changed. From our point of view the TD5 does not work well with that auto. After having a TDi manual for many years before the auto and with the TD5 manual we really appreciate being able to have the engine working in its prime torque rev range in all gears and the extra gear.. Having only 4 gears is a limitation for the Auto and the loss of direct drive with a torque converter meant that the engine always seemed to rev too hard unless you were doing over 80 Km/Hr when the torque converter locks up. It is not possible to get the engine pulling on the Turbo at 1800-2500 revs in the lower gears.. as soon as you use any throttle the gearbox changes down and the TC slips so the engine is doing 2800-3200 revs... and the lack of engine braking at normal road speeds also frustrated.

This might better suit the V8 and they also use a different TC which might change the way it works.

On the bright side the auto is verrry smooth.. and clever.. if you read the manual and use the mode switch it does work as a manual to lock in gears in low range for example..

Cheers

Trevor

I have a '99 V8 Auto with ACE and SLS.

The ACE and SLS come as standard in the ES model (as do 7 seats) but all these are were options on the other models.

The D2's LT230Q gearbox had a the "Q" suffix inserted meaning "Quieter"

This link summarises some Discovery II "upgrades" from the D1.
Discovery II Technology - AutoWorld.Com

and this link gives much more detail and some nice pics.
Land Rover Discovery II 1998 / 1999

Trevhoare sentiments about the Auto in the Diesel and the torque converter lock I have heard before but not experienced (I have the V8, no such trouble since the power band is wider).

My two cents, the V8 with the Auto is fantastic, but does need regular servicing (every 10,000klm by the book). Keep an eye on coolant level and spend 10 mins a couple of days a week checking all fluid levels, hoses and electruical connections in the engine bay.

The ACE system rarely gives any trouble but the SLS (rear suspension airbags and compressor) are prone to injury. I just bought new airbags US$129 ea as a preventative since they really only last 10 yrs approx. I also bought a new compressor for US$300, my current one is slow to pump up the rear so again its more out of preventing a failure of the old part while camping in a remote area. Easier to swap for a new on on my driveway, in my own time.

Cheers

Originally Posted by Trevhoare

We have just switched from a TD5 Auto with ACE to a TD5 manual without ACE.. both with SLS.
Frankly the difference in body roll is not that great, at least as a passenger. The steering response is perhaps a little sharper with ACE but our experience on indifferent country roads is that the very stiff ACE rollbar caused some harsh responses on bumpy corners at speed...

And then there's all that hydraulics and computing to wear out, need maintenance and go wrong.

As for the Auto that is the main reason we changed. From our point of view the TD5 does not work well with that auto. After having a TDi manual for many years before the auto and with the TD5 manual we really appreciate being able to have the engine working in its prime torque rev range in all gears and the extra gear.. Having only 4 gears is a limitation for the Auto and the loss of direct drive with a torque converter meant that the engine always seemed to rev too hard unless you were doing over 80 Km/Hr when the torque converter locks up. It is not possible to get the engine pulling on the Turbo at 1800-2500 revs in the lower gears.. as soon as you use any throttle the gearbox changes down and the TC slips so the engine is doing 2800-3200 revs... and the lack of engine braking at normal road speeds also frustrated.

This might better suit the V8 and they also use a different TC which might change the way it works.

On the bright side the auto is verrry smooth.. and clever.. if you read the manual and use the mode switch it does work as a manual to lock in gears in low range for example..

Cheers

Trevor

Compeletly disagree with all of this.

ACE is brillant would not want to go back to a non ACE car and have driven both on all road surfaces including alot of dirt touring at high speeds. My truck is 7 years old and ACE has been one of the most reliable things on it. Only replaced the pump this year because it was getting a bit noisy.

As far as the Auto goes mated to the TD5 it's one of the best set ups in the business for all applications.

I have a 2001 V8 D2 With ACE. I goes great- In a straight line, around corners and on the dirt, up hills.....in sand, in mud. The ACE is unbeleivable.... Pumps can be abit a noisy, but you would be without it! ... I get it serviced by smart people, run it on LPG and I will be buried in it!

On the auto v manual, I've owned a auto and now manual 99 D2 V8 and the auto was the better box. I like the manual, happy I got it, but is no racing gearbox, put it that way. The auto vs manual for repairs, well.. both can cost big $$$ from what I've heard to be rebuilt. The fuel economy difference - well, so far my manual is using more fuel than the auto, though there could be other factors involved.

I have driven with ACE and I reckon it's pretty damn good, but mine doesn't have it and I can't say I miss it. SLS was std on 7-seaters, by the way, though the first owner of mine claimed she had to put in the order for the seven-seat model when new in 1999, and waited till July (so not available initally or possibly in high demand if they were).

Slipped liner symptoms... well, others may want to correct me if I'm wrong, but an over-pressurised cooling system (ballooning hoses, dumping coolant out of the reservoir and for some a tappet noise that gets louder as the engine gets to operating temperature are liner symptoms. Also look for coolant weeping from the head gaskets, apparently common and my first D2 had it, a $2400 job to fix - replacing head gaskets.

Originally Posted by ak

Compeletly disagree with all of this.

ACE is brillant would not want to go back to a non ACE car and have driven both on all road surfaces including alot of dirt touring at high speeds. My truck is 7 years old and ACE has been one of the most reliable things on it. Only replaced the pump this year because it was getting a bit noisy.

As far as the Auto goes mated to the TD5 it's one of the best set ups in the business for all applications.

I agree ACE is worth every penny. My pump had a noise from brand new, it was not a big deal a slight noise at low speed when cornering. The dealer said they could replace it but the new pump might be worse so I lived with it.