TD5 Gearbox replacement

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m_asmith@hotmail.com - 02 Dec 2006 18:08 GMT

Hi All.

Can anybody recommend a replacement gearbox for a disco TD5 that will
last. I do a lot of towing (2200kg+) and the first box went after 150
000km. I am now on 250 000km and wondering when the next one is going
to give up. Would also like to know if anybody has found a worth
conversion for the TD5 as I am looking for more power, my have to go
the V8 route.

Regards
Mark S
South Africa

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m_asmith@hotmail.com - 03 Dec 2006 19:07 GMT

Hi all,

Just been reading through the postings and an article about someone who
found that the box in his disco should have been a manual but was in
fact an auto box from a V8. Are these boxes different (stronger) or is
it jus the ratios that are different?

Mark
South Africa.

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Austin Shackles - 03 Dec 2006 19:58 GMT

>Hi all,
>
>Just been reading through the postings and an article about someone who
>found that the box in his disco should have been a manual but was in
>fact an auto box from a V8. Are these boxes different (stronger) or is
>it jus the ratios that are different?

The ZF 4-speed is reckoned to be quite a tough box. later ones are better,
the "A" clutch was uprated, a weak point in the earlier ones. I think the
relevant numbers are 4HP22 and 4HP24, but no doubt Badger can confirm or
deny.

Signature

Austin Shackles. www.ddol-las.net my opinions are just that
"Festina Lente" (Hasten slowly) Suetonius (c.70-c.140) Augustus, 25

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Badger - 04 Dec 2006 01:12 GMT

> >Hi all,
> >
[quoted text clipped - 7 lines]
> relevant numbers are 4HP22 and 4HP24, but no doubt Badger can confirm or
> deny.

Yep, 4HP24 has the uprated "A" clutch, amongst other internal mods. BUT - it
is about 15mm longer overall than the 4HP22 because of this, and also it is
electronically controlled. You can build the 24 internals into a 22 case and
fit the 22's manual valve body, and the 24's larger "A" clutch and pump
housing though, but it's quite a faff about.
Badger.

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