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geobloke



Member Since: 06 Nov 2012
Location: Nottinghamshire
Posts: 4406
United Kingdom 
Discovery versus Defender Turbo Difference....
Why is it that a Discovery TD5 turbo has an electronic wastegate actuator and a Defender does not? what is the purpose?

Just curious...
Post #546895 7th Jul 2016 5:45pm
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gazman



Member Since: 17 Aug 2015
Location: Liverpool
Posts: 652
United Kingdom 2003 Defender 90 Td5 HT Alpine White
dunno, but when the disco one cocks up, most owners set it to run like a defender 2014 - current ..... 2003 defender td5 90 (my car)
2009 - current .... 2005 zx10r
Post #546920 7th Jul 2016 7:48pm
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geobloke



Member Since: 06 Nov 2012
Location: Nottinghamshire
Posts: 4406
United Kingdom 
Just curious, yuh know... must be a reason.
Post #546924 7th Jul 2016 8:03pm
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shaggydog



Member Since: 12 Aug 2012
Location: Kent
Posts: 3346
United Kingdom 1991 Defender 110 200 Tdi USW Arles Blue
I think its due to the defender being just generally a bit more rugged built than the disco and a bit of tube and a push rod is far less likely to go wrong than an electrical component.

Would love to find the official reason too though Thumbs Up Running Restoration Thread http://www.defender2.net/forum/post323197.html#323197

Self confessed mileage hunter Very Happy
Post #547075 8th Jul 2016 12:39pm
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blackwolf



Member Since: 03 Nov 2009
Location: South West England
Posts: 16884
United Kingdom 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
IIRC the Disco and the Def have totally different ECUs from different manufacturers and on the Disco the wastegate is under ECU control, whilst on the Def it is not.

I think!
Post #547111 8th Jul 2016 2:34pm
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geobloke



Member Since: 06 Nov 2012
Location: Nottinghamshire
Posts: 4406
United Kingdom 
Yes that is my understanding too. The question is why?
Post #547116 8th Jul 2016 2:37pm
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blackwolf



Member Since: 03 Nov 2009
Location: South West England
Posts: 16884
United Kingdom 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
Presumably because a more sophisticated Ecu had to be fitted to the Disco so that it could interface correctly to the HVAC, SLABS, and BCU systems, none of which the Defender has.

The Defender has a very basic electrical system so that a relatively unsophisticated ECU was quite sufficient.
Post #547126 8th Jul 2016 3:47pm
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roel



Member Since: 08 Aug 2009
Location: Lelystad
Posts: 2039
Netherlands 2003 Defender 90 Td5 PU Caledonian Blue
I don't mind to be corrected, but I thought the ecu for a td5 disco and td5 Defender are the same. The ecu knows when it is put in a Defender or Disco. Roel

1984 90 2.5 na Diesel - RR V8 (1994-2001)
1997 Camel Trophy Discovery 300TDI (2001-2009)
2005 G4 Discovery III 4.4 V8 (2008-2018) It's gone but it still hurts.
2003 90 Td5 (2009-now)
Post #547233 8th Jul 2016 11:04pm
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