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Engine gone bang
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NJSS
 


Member Since: 06 May 2009
Location: Catherington, Hampshire.
Posts: 10492

United Kingdom 2016 Discovery 4 3.0 SDV6 Landmark LE Auto Waitomo GreyDiscovery 4

In this thread:-

http://www.disco3.co.uk/forum/topic79787-45.html

George Bosch suggests:-


Quote:
The TDV6 bottom end problems are basically two-fold

1. Bearings start to rotate due to excessive friction during cold starts mainly after prolonged periods of non-activity. The TDV6 needs some time to build up oil pressure...... There is a fix here in South Africa for this. It is called Poly-TFE and all who are using it on their TDV6 engines have been spared from engine failures caused by bearings turning.

2. Snapped cranks - this is mainly caused by a failed or faulty front crank balancer. They are of a two-part rubber bonded design. With age etc, the rubber bonding separates and eventually fails and the balancer starts to wobble. Snapping of cranks has been observed to happen in engines with perfect bearings.

So the only solution here is to change the front balancer every 100'000km or so. Early warning sign are excessive wear on the Poly-V belt on the edge facing the radiator (fraying).


I wonder how much a new crank balancer/damper costs, and how long it would take to fit?

If not too expensive I am inclined to give this consideration. My engine has benefited from oil & filter changes ever 5k to 6k miles & the addition of Redex from 12k miles to 36k miles & Castrol Actevo 2 ever since, so hopefully at 70k miles it still has lots of life left in it. I've just changed the belts & oil pum, and with the benefit of hindsight should probably have changed the crank damper at the same time Big Cry

NJSS
 Am I Gammon or Woke ? - I neither know nor care.

2016 Discovery 4 Landmark
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Past LRs - Multiple FFRs, Discos & a Series I - some petrol, some diesel,
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Post #144502619th Mar 2015 12:37 pm
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Nodge68
 


Member Since: 05 Sep 2014
Location: Newquay
Posts: 1014

England 2005 Discovery 3 TDV6 S Manual Zambezi SilverDiscovery 3

Interestingly he gives slightly different reasons for crank failure on another forum. Confused
He is spot on with the crank balancer.
The crank balancer plays a vital role in keeping crank harmonic resonances to a minimum. Harmonic resonances are a known cause of crank failure, regardless of engine make.
So replacement of the balancer in good time, could well help prevent early crank failure.
It's going to be much cheaper than a replacement engine and shouldn't take long to fit.
 Freelander SE 2005 Auto.
D3 TDV6. Gone. 


Last edited by Nodge68 on 19th Mar 2015 4:18 pm. Edited 1 time in total 
Post #144504319th Mar 2015 1:19 pm
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urhunden
 


Member Since: 15 Jan 2010
Location: Stockholm
Posts: 773

Sweden 2011 Discovery 4 3.0 TDV6 HSE Auto Marmaris TealDiscovery 4

What about the 7year warranty. Have a TDV6 Auto MY-08 with different faults happening all the time.
Is this a warranty also valid in Sweden?
Tried last year to get the diff lock motor on warranty. This is a wellknown fault, but negative from the dealer and importer as well.

So tell me more about the warranty.
  
Post #144513319th Mar 2015 4:16 pm
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hugeviking
 


Member Since: 08 Jun 2010
Location: cotswolds
Posts: 1482

United Kingdom 2006 Discovery 3 TDV6 S Manual Cairns BlueDiscovery 3

So, what's involved in changing the balancer then, is it DIY, any special tools required, presumably a puller is required.

Andi.
  
Post #144524619th Mar 2015 8:23 pm
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DSL
Keeper of the wheelie bin 


Member Since: 11 May 2006
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Ukraine 

And how much would it cost for us non DIYers to have done at a trusted dealer? I've stopped reading these threads (apart from this one obviously Whistle ) as it is just too scary, just hoping the Big Bang doesn't happen to mine.
  
Post #144524919th Mar 2015 8:27 pm
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hugeviking
 


Member Since: 08 Jun 2010
Location: cotswolds
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United Kingdom 2006 Discovery 3 TDV6 S Manual Cairns BlueDiscovery 3

Thats the trouble with forums. Imagine a Martian beeming down to earth and ending up at a doctors waiting room, he would report back that 100% of humans were faulty.

Then again....

Andi.
  
Post #144525719th Mar 2015 8:40 pm
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Robbie
 


Member Since: 05 Feb 2006
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Not credible as the Martian would have to book weeks in advance….
 Land Rover - Turning Drivers into Mechanics Since 1948

Battery & Quiescent Current Drain Testing

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Post #144526919th Mar 2015 9:07 pm
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hugeviking
 


Member Since: 08 Jun 2010
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United Kingdom 2006 Discovery 3 TDV6 S Manual Cairns BlueDiscovery 3

Martian is in bupa Thumbs Up

Andi
  
Post #144533119th Mar 2015 10:12 pm
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Robbie
 


Member Since: 05 Feb 2006
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United Kingdom 2013 Discovery 4 3.0 SDV6 HSE Auto Baltic BlueDiscovery 4

Ah the 'worried well' club - probably describes many a D3 owner!

Laughing
 Land Rover - Turning Drivers into Mechanics Since 1948

Battery & Quiescent Current Drain Testing

Diagnostics for:
Defender, FL2, D3, D4, Evoque, RRS & FFRR
A not-for-profit enterprise


 
 
Post #144533819th Mar 2015 10:15 pm
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DSL
Keeper of the wheelie bin 


Member Since: 11 May 2006
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Ukraine 

Nah, if it's a D3 it's either "worried unwell" or "seriously financially concerned". Whistle Whistle
  
Post #144534119th Mar 2015 10:17 pm
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Disco_Mikey
 


Member Since: 29 May 2007
Location: Dundee, Scotland
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Scotland 2005 Discovery 3 TDV6 HSE Auto Cairns BlueDiscovery 3

DSL wrote:
And how much would it cost for us non DIYers to have done at a trusted dealer? I've stopped reading these threads (apart from this one obviously Whistle ) as it is just too scary, just hoping the Big Bang doesn't happen to mine.


Pulley is £49 + VAT. Half an hour or so to replace

Not convinced that is the issue though. If it was, then all these replacement engines would have blown up too, as a new engine doesn't come with a new crank damper...
 My D3 Build Thread

TDV8 Retrofit Build Thread 
 
Post #144535719th Mar 2015 10:36 pm
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DSL
Keeper of the wheelie bin 


Member Since: 11 May 2006
Location: Off again! :-)
Posts: 72786

Ukraine 

Thumbs Up

As a non techie it's very easy to become paranoid with these engines. Just coz you're paranoid doesn't mean they aren't after u. Whistle
  
Post #144536019th Mar 2015 10:38 pm
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DG
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Member Since: 12 Dec 2005
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Wales 

TDV6 Crank failure = 1 per week on average

SDV6 Crank Failure = 1 per month on average

Time to go back sleep Yawn
 21 year LR veteran > D2 GS 2003 > D3 S 2006 > D3 HSE 2009 > D4 HSE 2013 > D4 HSE 2015 > D5 HSE 2018 > DS HSE R-Dynamic P300e 2021  
Post #144537019th Mar 2015 10:47 pm
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DSL
Keeper of the wheelie bin 


Member Since: 11 May 2006
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Ukraine 

I read that as meaning the 3.0 is as bad as the 2.7. Don't you just love statistics? Laughing
  
Post #144537619th Mar 2015 10:52 pm
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DG
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Member Since: 12 Dec 2005
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Wales 

All drop in within normal failure rates tbh ...hard for those who experience for sure ...but as Robbie would say lots of worried well out there Smile
 21 year LR veteran > D2 GS 2003 > D3 S 2006 > D3 HSE 2009 > D4 HSE 2013 > D4 HSE 2015 > D5 HSE 2018 > DS HSE R-Dynamic P300e 2021  
Post #144537819th Mar 2015 10:54 pm
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