Long Way From Home and NEED Auto Trans Help Bad

**HunterJ** · 3rd January 2022, 05:36 PM

Originally Posted by discorevy

X2, some of us on here are mechanics who know a little bit about the 4hp22 box.

Hi all, firstly Happy New Year and secondly my sincerest apologies for not responding to those that posted until now as it has been a bit of a whirlwind ride! But thank you to all for their input.

In answer to the what's it doing, I braked for a T intersection and when I went to accelerate away she no drive then it abruptly picked up drive and went into limp mode which it stayed in until I got to Cranbourne. It lost drive also when turning at traffic lights and then picked it up again after about 15 - 20 seconds.

I managed to talk to the guy that owns Ultimate Transmissions in Cranbourne on Christmas Eve morning who was trying be packed up and gone by midday. Decent guy and honest that his guys were finishing up a job that had to be out by midday and then they were all out of there till the 4th Jan like everyone else as noted above.

His diagnosis over the phone was that because the bell housing was where the oil was coming from he felt that the front seal in the trans had let go somewhere between Tamworth and Mansfield and that it has been progressively losing fluid. He was happy to look at it tomorrow (4th Jan) if was was still around - bottom line he told me im would be pucked and an exchange one required.

To me it had all the hallmarks of a lack of trans oil and when I topped it up it til it was overflowing as required (with the engine running and in park) it took 2.5 litres of Dex3 and the overflow oil had the most beautiful silvery mist through it - aluminium looks great in oil just not mine!!!!!
It did drive consistently once topped up but it was notchy in the gear change - I'm as game as the next guy but a 1000k drive back to Tamworth on a wing and a prayer didn't do it for me coz all could see was being stranded in the middle of nowhere!

The Disco is still in Melbourne and the NRMA are having it road freighted back to ARB Tamworth who does the major work on it. A lot of the workshop guys have Disco's - 1's and 2's, a Defender and even a Rangy! Should be back at ARB Tamworth by the 18th Jan.

One last question, I have an auto D2 petrol as a parts donor (panels, switches etc. etc.) with a perfectly good box in it - I'm guessing that the petrol and diesel boxes are totally different but if they are the same I will have been kissed on the you know what by a fairy because it will save me 1000's!!!!!!
Can the learned confirm for me one way or another on this one please.

My D2 is in 8-9/10 condition and I don't want to lose it as I luv driving it - 140,00k in two and a half years

Again, thank you all for the input it is very much appreciated - I will keep checking back in regularly to see any responses.
Kind regards
Hunter J

**V8Ian** · 3rd January 2022, 06:46 PM

I believe the petrol and diesel transmissions are the same, the torque converters are different.

**discorevy** · 3rd January 2022, 07:10 PM

Originally Posted by HunterJ

One last question, I have an auto D2 petrol as a parts donor (panels, switches etc. etc.) with a perfectly good box in it - I'm guessing that the petrol and diesel boxes are totally different but if they are the same I will have been kissed on the you know what by a fairy because it will save me 1000's!!!!!!
Can the learned confirm for me one way or another on this one please.

My D2 is in 8-9/10 condition and I don't want to lose it as I luv driving it - 140,00k in two and a half years

Again, thank you all for the input it is very much appreciated - I will keep checking back in regularly to see any responses.
Kind regards
Hunter J

Not impossible for the front seal to let go , but more likely an o ring on the cooler pipe which will leak just behind the bell housing.
The good news is that you will be able to use the internals , valve body and case from the V8 ( I'd also suggest getting a V8 Torque converter conversion kit and using the V8 converter along with an engine remap if not already done ).
Bad news is that the rear output shaft is a lot longer on the TD5 and the box will need to be stripped down to swap.
At least this will allow everything to be checked .
Fit teflon input shaft seals while apart as well.

**HunterJ** · 3rd January 2022, 07:40 PM

Originally Posted by V8Ian

I believe the petrol and diesel transmissions are the same, the torque converters are different.

Oh thank you so much for that gem of information, my bank balance appreciates you immensely!
Cheers
HunterJ

**HunterJ** · 3rd January 2022, 07:49 PM

Originally Posted by discorevy

Not impossible for the front seal to let go , but more likely an o ring on the cooler pipe which will leak just behind the bell housing.
The good news is that you will be able to use the internals , valve body and case from the V8 ( I'd also suggest getting a V8 Torque converter conversion kit and using the V8 converter along with an engine remap if not already done ).
Bad news is that the rear output shaft is a lot longer on the TD5 and the box will need to be stripped down to swap.
At least this will allow everything to be checked .
Fit teflon input shaft seals while apart as well.

I have had the flexible ends of both cooler pipes replaced earlier in 2021 - hope that the removal and reinstallation of the pipes hasn't caused an 'O' ring issue.

Thank you for the heads up on the other details - will the TD5 torque converter be pucked also?

Just so I understand how it all works, is there a benefit in using the V8 torque converter and remap in the TD5?

Again, thank you all for the ongoing assistance.
Cheers
HunterJ

**Tins** · 3rd January 2022, 07:55 PM

While you're at it upgrade the drive plate. The original ones tend to crack.

**discorevy** · 3rd January 2022, 08:23 PM

Originally Posted by HunterJ

I have had the flexible ends of both cooler pipes replaced earlier in 2021 - hope that the removal and reinstallation of the pipes hasn't caused an 'O' ring issue.

Thank you for the heads up on the other details - will the TD5 torque converter be pucked also?

Just so I understand how it all works, is there a benefit in using the V8 torque converter and remap in the TD5?

Again, thank you all for the ongoing assistance.
Cheers
HunterJ

The main benefit of using the V8 medium torque converter together with mild remap is a much more relaxing drive with the same or better fuel consumption.
the vehicle will accelerate swiftly without it revving so high due to the lower stall rate.
If you decide to stay with the TD5 converter you will , at the least have to get it recond, as will be toast, and contaminate the rest of the box

Originally Posted by Tins

While you're at it upgrade the drive plate. The original ones tend to crack.

Another benefit of the V8 converter conversion kit is that it contains the V8 round drive plate with 4 bolts instead of the 3 bolt triangular TD5 one

**HunterJ** · 3rd January 2022, 11:08 PM

Originally Posted by discorevy

The main benefit of using the V8 medium torque converter together with mild remap is a much more relaxing drive with the same or better fuel consumption.
the vehicle will accelerate swiftly without it revving so high due to the lower stall rate.
If you decide to stay with the TD5 converter you will , at the least have to get it recond, as will be toast, and contaminate the rest of the box

Another benefit of the V8 converter conversion kit is that it contains the V8 round drive plate with 4 bolts instead of the 3 bolt triangular TD5 one

Thanks again for the info, like the idea of the benefits of the conversion to the V8 converter. If it all has to come out then to me it's a no brainer!
The Land Rover guys at ARB should know all about the conversion kit but if not, who do I get them to order it from?

The engine has been chipped (South Australian company modified the ECU, have the details in the vehicle which is on its way back here) so not sure if that will have any bearing on the remap.

Cheers
HunterJ

**discorevy** · 4th January 2022, 08:19 AM

Originally Posted by HunterJ

Thanks again for the info, like the idea of the benefits of the conversion to the V8 converter. If it all has to come out then to me it's a no brainer!
The Land Rover guys at ARB should know all about the conversion kit but if not, who do I get them to order it from?

The engine has been chipped (South Australian company modified the ECU, have the details in the vehicle which is on its way back here) so not sure if that will have any bearing on the remap.

Cheers
HunterJ

If it's been chipped then I'm guessing you have an early D2 ( 99-01 ) in which case is the equivalent of a remap so should be fine,
If the D2 owners working at ARB don't know about the conversion kit and they have autos they'll probably want one after driving yours

TD5 Heavy Duty Torque Converter Fitting Kit - Ashcroft Transmissions

**HunterJ** · 4th January 2022, 11:17 AM

Originally Posted by discorevy

If it's been chipped then I'm guessing you have an early D2 ( 99-01 ) in which case is the equivalent of a remap so should be fine,
If the D2 owners working at ARB don't know about the conversion kit and they have autos they'll probably want one after driving yours

TD5 Heavy Duty Torque Converter Fitting Kit - Ashcroft Transmissions

Yup, Daisy is a 99 D2 - called it Daisy coz my aged mother when she was alive used to bitch constantly about the height she had to drag her frail old bones to get into it and it reminded me so much of the Driving Miss Daisy movie

))))

Spoke to ARB this morning and they all good to do the conversion and get what needs to be done, one guy has a manual and the other an auto and was very interested in the notion of the swap. They hadn't payed with the conversion from petrol to diesel before and wanted to know where to get the adapter kit from.
Is it available locally or will it have to come from the UK?

I can use the V8 torque converter as is right? Obviously checked over before installation.

Last question I guess, I do tow up to 2 tonne with it occasionally (covered trailer with two race bikes and associated gear) so this conversion should be good for that too right?

Thanks again for taking the time to give over info.
Cheers
HunterJ

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