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Rich broom



Member Since: 26 Jul 2015
Location: Tiverton
Posts: 78
Td5 speedo in tdi
Just a quickie.
When retrofitting a td5 speedo into a 300tdi, can I use a disco 300tdi speedo drive or do I need a td5 unit?
Many thanks
Rich
Post #445019 10th Aug 2015 9:17pm
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g-mack



Member Since: 07 Jan 2014
Location: northumberland
Posts: 1967
United Kingdom 
you need a td5 transducer and some 3 core cable to replace the tdi speedo cable. Thumbs Up I've just done it myself My 109 thread

my youtube channel
Post #445024 10th Aug 2015 9:28pm
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Martin
Site Admin


Member Since: 02 Apr 2007
Location: Hook Norton
Posts: 6683
United Kingdom 2015 Defender 90 Puma 2.2 XS CSW Montalcino Red
Don't buy a Britpart transducer, lots of reports of them failing quickly.  1988 90 Td5 NAS soft top
2015 D90 XS SW
Post #445025 10th Aug 2015 9:29pm
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g-mack



Member Since: 07 Jan 2014
Location: northumberland
Posts: 1967
United Kingdom 
everything you need to know here
http://www.retroanaconda.com/landrover/200...tdi300tdi/ My 109 thread

my youtube channel
Post #445027 10th Aug 2015 9:31pm
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Martin
Site Admin


Member Since: 02 Apr 2007
Location: Hook Norton
Posts: 6683
United Kingdom 2015 Defender 90 Puma 2.2 XS CSW Montalcino Red
It's a ubiquitous Econoseal 3 pin connector too Thumbs Up  1988 90 Td5 NAS soft top
2015 D90 XS SW
Post #445028 10th Aug 2015 9:34pm
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Rich broom



Member Since: 26 Jul 2015
Location: Tiverton
Posts: 78
Cheers chaps.
Shame I can't use the 300 TDI transducer as I have a few sat here
Post #445029 10th Aug 2015 9:34pm
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Retroanaconda



Member Since: 04 Jan 2012
Location: Scotland
Posts: 2748
Scotland 
Technically you can, but you would have to re-program the speedo head's EEPROM to accept a different number of pulses per mile. I have also seen someone take apart the Disco unit and modify he rotating magnet to have more 'lobes' which effectively increased/decreased (I forget which) the number of pulses generated per mile to match what is required by the speedo head.

There's a good thread on LR4x4 where a couple of clever chaps reverse-engineered the speedo head and decoded a lot of the internal programming.
Post #445352 12th Aug 2015 7:40am
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Rich broom



Member Since: 26 Jul 2015
Location: Tiverton
Posts: 78
That sound like a lot of Censored about for the same of a £30 transducer
Post #445567 12th Aug 2015 9:20pm
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Retroanaconda



Member Since: 04 Jan 2012
Location: Scotland
Posts: 2748
Scotland 
You're right, though they're closer to £70 now.
Post #445867 13th Aug 2015 7:39pm
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