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DC101

Member Since: 01 Jul 2012
Location: Pudsey, West Yorkshire
Posts: 260

Transfer box - changing to a Disco box?

Hi,

I know this topic has covered before but I would really appreciate
some further opinion. I've been offered a 'swap' for my transfer box (TD5 110)
with one from a 2002 Disco 2. I 'm keen, but would like to know from
those who have made the change is it definitely worthwhile, do you lose much
'Tractability' and does it help get rid of the box 'whine' on the motorway (Do Discos
have a quieter gearing? ). I don't pull heavy trailers, plus have had a standard BAS tune.

Many Thanks.

11th Oct 2013 4:56pm

equipe59

Member Since: 02 Jun 2013
Location: Cotswoldshire
Posts: 38

Hi,

Yes
No
No

Hope that helps!!

Seriously though, I changed mine but in the end went for an Ashcroft box as the tranny box I considered was a second-hand Disco TDi200 box, but my spanner-man (MiD Engineering) advised against it as a tweaked TD5 would have a fair chance of wrecking it - something to do with the cross-drilled input shaft, or rather lack of

As I like my 90, and want to keep it for a while, I decided a 'known quantity' tranny box was a better bet

Glad I did as when I opened up the Disco box for a look-see, the innards were full of emulsified oil-and-silt mix, which would have been expensive...

11th Oct 2013 6:29pm

diesel_jim

Member Since: 13 Oct 2008
Location: hiding
Posts: 6112

Re: Transfer box - changing to a Disco box?

DC101 wrote:
with one from a 2002 Disco 2. .

Bear in mind that this era of disco transfer may not have the difflock linkage on it... you may need to swap some bits over or buy the relavent parts (Ashcrofts springs to mind) to make the disco box difflock-able.

11th Oct 2013 6:31pm

DC101

Member Since: 01 Jul 2012
Location: Pudsey, West Yorkshire
Posts: 260

Thanks for the advice.

With reference to transfer box noise, I had in my mind somewhere that I was told about a 'Q' denoted gear set, which meant the gears ran quieter than the standard Defender. Have I imagined this?

I would really like to lose the whine at motorway speeds.

11th Oct 2013 8:44pm

Retroanaconda

Member Since: 04 Jan 2012
Location: Scotland
Posts: 2675

You shouldn't be able to hear the transfer box at motorway speeds. Certainly not over the engine, road and wind noise anyway. If there's a noticeable whine then something's amiss.

There is a Q variant yes with quieter gears, can't remember what it was fitted to though I am afraid!

11th Oct 2013 8:51pm

pj2106

Member Since: 20 Dec 2012
Location: Huntingdon AKA The Shire
Posts: 1500

2008 Defender 110 Puma 2.4 USW Stornoway Grey

yes dfinateley worth while and with a tune makes it much more driveable bas done a really nice smooth tune on mine and can now cruise at 80 but will touch 100 if pushed

best mod I have done to mine so far 2008 110 2.4 XS Utility (Hagrid)
2002 90 TD5 Hardtop (Sully) Sold
1998 300TDi D1 (Billy) Sold

11th Oct 2013 9:01pm

Martin
Site Admin

Member Since: 02 Apr 2007
Location: Hook Norton
Posts: 6630

2015 Defender 90 Puma 2.2 XS CSW Montalcino Red

All Td5s have LT230Q transfer boxes

1988 90 Td5 NAS soft top

2015 D90 XS SW

11th Oct 2013 9:08pm

DC101

Member Since: 01 Jul 2012
Location: Pudsey, West Yorkshire
Posts: 260

The whine is noticeable on slow (55+) motorway speeds, and noisier the faster you go (not that I go that fast..!).
Not having driven anyone else's TD5 I assumed it was normal.

11th Oct 2013 9:11pm

diesel_jim

Member Since: 13 Oct 2008
Location: hiding
Posts: 6112

Mine doesn't have the Q gears (not that I know of anyway) and it's not unduly noisy.

Although having said that, i've not driven any great distance in a puma so can't really compare.

11th Oct 2013 9:17pm

Gareth

Member Since: 12 Dec 2011
Location: Woodford
Posts: 1115

Mine has a road speed related whine at anything over 45. It gets drowned out by other noise at about 65. I had the oil changed and it did quieten it down a bit. Its always done for as long as I have had the vehicle, and has got no louder. Previous owner also said it had always made the noise, So I too presumed they all did it.

I have not swapped the gears yet, but am planning to rebuild my own box. 2021 Defender 110 X-Dynamic HSE D300 MHEV
1966 S2a 109 aka Betsy

12th Oct 2013 7:20am

jst

Member Since: 14 Jan 2008
Location: Taunton
Posts: 8145

2011 Defender 110 Puma 2.4 USW Stornoway Grey

NOT ALL TD5s has Q gears Cheers

James
110 2012 XS Utility
130 2011 M57 bespoke Camper
90 2010 Hardtop
90 M57 1988 Hardtop

12th Oct 2013 8:29pm

DC101

Member Since: 01 Jul 2012
Location: Pudsey, West Yorkshire
Posts: 260

Thanks for the replies . The noise from mine also 'goes' at 'higher' speeds due to being lost in the general racket. My main reason for the transfer box change is quieter motorway driving, and hopefully the lower engine revs will significantly help. Out of interest, if not all TD5's had a Q box, is there anyway of telling on the box casing etc ?

Cheers

13th Oct 2013 10:11am

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