TD5 - safe increase in power and torque

[bradz]

Hi guys

This is my first post so please be gentle with me. I am looking at picking up a 2000 - 2003 TD5 Disco Auto in the coming months and will most likely be getting it chipped.

Without modifying the intercooler, what is the highest kilowatts and torque you would chip a TD5 without stressing the engine too much. The reason I ask is that I tow a 2 tonne boat regularly and want to get as much power and torque as I can without stuffing the engine.

Your knowledge and assistance will be greatly appreciated.

Regards
Brad

[discowhite]

140kw 480nm safley.
190kw 500nm with I/C and more boost.
dont think you can go much more than the first option due to the auto factor.

search for tombie2 chip upgrades.

cheers phil

[Redback]

Only thing I can add to what Phil has said, is get an 03 model on if you can and something to monitor your EGTs.

Baz.

[bradz]

Apart from the CDL, what else makes the 03 model better than the 01 or 02 models?

I will definitely be getting an EGT guage. Is there anything you can do about the warping manifold issue or do you just have to deal with it once it happens?

I guess after having owned a GQ 4.2 turbo diesel Patrol for so long and not having to do much other than change oil every 5,000km it seems that there is alot to watch out for with the Disco's. Mind you, I am looking forward to the increased comfort level and the auto - which the wife will love.

Brad

[discowhite]

the newer models 03 on, have more of the bugs ironed out. most of the simple irritating issues seam to be on the eairly ones.

the warping manifold issue can be dealt with b4 it happens, upgrade the studs b4 they break. some people have issues with the manifolds and run stock cars, im fairly modified and touch wood still have no issues:eek:

another given these days is buy a nanocom, it will save you lots of dollars in the long run clearing the little faults that dealers charge for.

cheers phil

[DiscoDan]

I was told by a rover mechanic that the D2a eg 03-04 models have more response down low, This I was told was due to different injectors and ECU to earlier models.

03-04 nicer finish as well, not just grey or brown.

[bradz]

Thanks for all the input guys. Greatly appreciated.

Brad

[Furka]

I was told by a rover mechanic that the D2a eg 03-04 models have more response down low, This I was told was due to different injectors and ECU to earlier models.

03-04 nicer finish as well, not just grey or brown.

Are the new injectors compatible with the older TD5 :angel: ?

[discowhite]

not that i know for sure but ide say the injectors are physically the same, it will be the coding in the ecu that will be different. if the ecu has bee remapped this wont be an issue.

there are to different pt#'s for the injectors, up to 2001 and after 2002.

cheers phil

[waz]

Even with the 480Nm I would recommend fitting a transmission cooler.

W

[Urban Panzer]

Even with the 480Nm I would recommend fitting a transmission cooler.

W


They already have one

[Redback]

They already have one

Out here they need an extra or larger transmission cooler because of the temps we have, especially if towing, the standard cooler just doesn't cope with the extra load.

Baz.

[scarry]

I was told by a rover mechanic that the D2a eg 03-04 models have more response down low, This I was told was due to different injectors and ECU to earlier models.

03-04 nicer finish as well, not just grey or brown.

I was told the injectors are different.ECU is also different
Also if you look at the LR engine spec,you will see MY 03 in auto has higher torque figures than previous D2's

I think the figures went from 315 to 340nm if my memory is correct.Power is the same.I have had both models & the difference isnt noticeable.

[alien]

Are the new injectors compatible with the older TD5 :angel: ?

From what I've read and been told on here the later injectors work on a higher preshure.
Different timing chain and cam rockers to start with.

{The things I've learnt on here :eek:}

Cheers.

[SO69WA]

can any one tell me what their td5 does when you disconnect your coolant temp sensor wiring, while running at normal op temp, need to know to diagnose faulty sensor, coolant or fuel temp

[2 rocks]

Out here they need an extra or larger transmission cooler because of the temps we have, especially if towing, the standard cooler just doesn't cope with the extra load.

Baz.

Hey Baz
Had to replace my **** A/T oil cooler recently and asked if I could get a bigger one. I am already chipped to 140kw and want to go up from there and was told "no, there isn't room for a bigger A/T cooler".

Have you done this?
Cheers
Mike

[justinc]

Hey Baz
Had to replace my **** A/T oil cooler recently and asked if I could get a bigger one. I am already chipped to 140kw and want to go up from there and was told "no, there isn't room for a bigger A/T cooler".

Have you done this?
Cheers
Mike

Mike, I recently went to fit a P38a tranny cooler to a D2, only to discover the same problem. There is very little room, and the plumbing would want to be pretty carefully routed. I would give it a go with my own vehicle though nothing is impossible:), the customer didn't want to pay for the extra R&D time, which is fair enough:o

JC

[2 rocks]

Mike, I recently went to fit a P38a tranny cooler to a D2, only to discover the same problem. There is very little room, and the plumbing would want to be pretty carefully routed. I would give it a go with my own vehicle though nothing is impossible:), the customer didn't want to pay for the extra R&D time, which is fair enough:o

JC

Thanks Justin,
That's a bit of a bugger... I've already got a bigger intercooler stuffed in there ;)
Cheers
Mike

[justinc]

Thanks Justin,
That's a bit of a bugger... I've already got a bigger intercooler stuffed in there ;)
Cheers
Mike

I did say nothing is impossible Mike:cool:

I came to the conclusion in the end that fitting it behind the grille would be the best place, modding the grille plastics accordingly. This vehicle however had a winch etc in the way which made THAT impossible. Definately feasible without one if you don't mind chopping a bit:D

JC

[Graeme]

can any one tell me what their td5 does when you disconnect your coolant temp sensor wiring, while running at normal op temp, need to know to diagnose faulty sensor, coolant or fuel temp
Disconnecting the coolant temp sensor with the ignition on will cause a permanent fault to be recorded. The a/c fan will then always run whenever the engine is running until the fault code is cleared.

The fuel temp sensor appears to be disabled in Aussie (at least) ecus (certainly mine and lots of others) and the fuel temp defaults to 60 deg C.

The coolant and fuel temp sensors are identical and thus can be swapped. They can also be purchased at auto outlets as its a common Bosch sensor that's used in lots of vehicles eg Commodores.

[Redback]

Hey Baz
Had to replace my **** A/T oil cooler recently and asked if I could get a bigger one. I am already chipped to 140kw and want to go up from there and was told "no, there isn't room for a bigger A/T cooler".

Have you done this?
Cheers
Mike

Sorry no mine is a manual.

I'm pretty sure someone on here has fitted an extra cooler after he was having overheating transmission problems when towing.


Mike, I recently went to fit a P38a tranny cooler to a D2, only to discover the same problem. There is very little room, and the plumbing would want to be pretty carefully routed. I would give it a go with my own vehicle though nothing is impossible:), the customer didn't want to pay for the extra R&D time, which is fair enough:o

JC

JC what about another cooler added in the system, as I mentioned above I'm sure someone has done it.

Baz.

[Basil135]

Didn't I read on here the other day, that the D2a 2003 model has a larger intercooler than the original D2? :confused:

Or is that just wishful thinking?


As far as power mods go, before you get the chip done, do the EGR mod, and the centre muffler. Oh, what a feeling - Land Rover :D

[Graeme]

The D2a's bellows-type exhaust flex joint is very restictive as it has only just over 50% of the cross-sectional area of the pipe either side due to its internal length limiter. It makes a mockery of the rest of the 2.5" exhaust.

[Slunnie]

Didn't I read on here the other day, that the D2a 2003 model has a larger intercooler than the original D2? :confused:

Or is that just wishful thinking?


As far as power mods go, before you get the chip done, do the EGR mod, and the centre muffler. Oh, what a feeling - Land Rover :D
It's a thicker intercooler than the early type.

[justinc]

Sorry no mine is a manual.

I'm pretty sure someone on here has fitted an extra cooler after he was having overheating transmission problems when towing.



JC what about another cooler added in the system, as I mentioned above I'm sure someone has done it.
Baz.

Baz,

Technically a good idea, provided the plumbing is spot on. The LR 4HP22EH has some high pressures and therefore high volumes of fluid flow, and in order not to create a critical pressure/ flow drop in the cooling system, pipework and bends/ joiners etc etc need to be kept to a minimum, and as few sharp bends etc as possible. I have no doubt it is possible, like the P38a cooler, but needs to be carefully fitted/ plumbed.

JC

[Slunnie]

Mike, I recently went to fit a P38a tranny cooler to a D2, only to discover the same problem. There is very little room, and the plumbing would want to be pretty carefully routed. I would give it a go with my own vehicle though nothing is impossible:), the customer didn't want to pay for the extra R&D time, which is fair enough:o

JC
Theres not really room where the OE one is, I guess unless you thicken one up. The prob in that spot is tha they clog with mud and you cant clean them.

I've got an additional cooler, so the ATF passes through 2 coolers in sequence. All fittings absolutely must be hgh pressure fittings and likewise with the cooler core. Low pressure stuff doesn't cut it on the 4HP22EH at least and I would expect the 4HP24EH to be same. Cant comment on the non EH autos. The additional cooler sits in front of the radiator pack and behind the grill. My one is from Davis Performance Landys and has made a world of difference to the autos longevity.

This is how the OE ones come out despite radiator cleaning
https://www.aulro.com/afvb/images/imported/2009/09/1144.jpg


I tried a tube ATF cooler. This one doesn't handle the pressure and failed quite a few times in the fittings. Great for most autos, but not the ZF which runs up to 125psi in the lines instead of 25psi.
https://www.aulro.com/afvb/images/imported/2009/09/1145.jpg


The DPL one has been in for ages now and never ever indicated that it even might give probs. full high pressure setup with pressure fittings
https://www.aulro.com/afvb/images/imported/2011/01/750.jpg

[justinc]

Simon, Had a Defender 130 Tdi and 4HP22 recently where they had fitted the cooler behind the 12,000lb winch drum...needless to say the box didn't last very long:(

Yours looks like it'd get some cool air though:)

JC

[Slunnie]

Simon, Had a Defender 130 Tdi and 4HP22 recently where they had fitted the cooler behind the 12,000lb winch drum...needless to say the box didn't last very long:(

Yours looks like it'd get some cool air though:)

JC
Thats a really interesting point JC. Expecially considering that the OE ATF cooler sits behind a bull bar, winch and AC condensor and then that air is still restricted by the engine radiator. It must make a huge difference when the ATF cooler isn't operating at notably high temps, but is temp sensitive.

This one made the world of difference. I can plug through soft sand all day long or tow laden trailers up through winding mountain roads etc and the auto has indicated that its warmed through the shift pattern, but never brought on the "too late" light.

[Redback]

Thats a really interesting point JC. Expecially considering that the OE ATF cooler sits behind a bull bar, winch and AC condensor and then that air is still restricted by the engine radiator. It must make a huge difference when the ATF cooler isn't operating at notably high temps, but is temp sensitive.

This one made the world of difference. I can plug through soft sand all day long or tow laden trailers up through winding mountain roads etc and the auto has indicated that its warmed through the shift pattern, but never brought on the "too late" light.

I knew I'd seen something on this;) those pics are from your web gallery tech section aren't they Simon:confused:

Baz

[Slunnie]

I knew I'd seen something on this;) those pics are from your web gallery tech section aren't they Simon:confused:

Baz
Gday Baz, thats the one. Here is the ATF cooler gallery

www.slunnie.com - D2 Transmission radiator (http://www.slunnie.com/coppermine/thumbnails.php?album=105)