To be fair the African cars seem to have a much higher failure rate than elsewhere.
Could it be poor quality oil and the fact that LR in Africa recommend 25k km service intervals, whereas elsewhere it is half that? Even then, I've read posts on 4x4community.co.za made by people whose cars have not suffered engine failure, who are still clearly not using the correct oil. Recipe for disaster with these engines.
Indeed, that seems to be the case.
Could be a combination of factors: long distances we drive, the quality of diesel (50ppm), 24,000km service interval, high ambient temperatures?
But one thing we all agree upon is that there is NO way to predict which vehicle will fail, so you cannot even do any preventative maintenance --
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A.J.M wrote:
Would there not come a point when you can say "if it was going to do it, it would have done it by now"
My D3 is now about to celebrate its 12th birthday, just over 156k on the clock.
Gets an AF full service kit every year. Correct Castrol oil in it and such.
Seen snapped cranks at sub-80k. Have 2 engines here now, one with 160k and one with 198k My D3 Build Thread
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Naks wrote:
Could be a combination of factors: long distances we drive, the quality of diesel (50ppm), 24,000km service interval, high ambient temperatures?
None of the above would be relative IMO and also I don't believe that there is a higher incidence in SA ...I suspect that more Disco owners are part of the LR community than is the case in many other countries including the UK and therefore the reported rate appears higher. 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
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15th Dec 2016 9:30 am
rrhool
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It's more likely that the problem is with the TVdamper. The TV (torsional vibration) damper may not have been specified correctly, it may not have been manufactured correctly. There may be rogue failures in manufacture of the TVdamper, that you can't see, which will lead to a crank failure.
I know a chap who was involved in the durability testing of the Lion engine, next time I see him I'll ask his opinion.
I'm not sure that changing the TVdamper will protect you from a failure. You might be unlucky enough to fit a failed TVD, where the one you had was ok.
This is just my assumptions based on some engine knowledge, not facts. Richard
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15th Dec 2016 10:45 am
Geoff at Drym
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Anybody know if there have been similar problems with Citroen/Peugoet/Jaguar?2007 Disco3 2.7 tdv6 SE
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15th Dec 2016 10:57 am
Gareth Site Moderator
Member Since: 07 Dec 2004
Location: Bramhall
Posts: 26702
Could a failing injector cause enough stress to snap the crank?
If a cylinder is not producing enough power, or firing at the wrong time, maybe the extra stress is enough to snap the crank?
15th Dec 2016 5:18 pm
M3DPO
Member Since: 22 Sep 2010
Location: Notts.
Posts: 8109
More like an overfueling injector or two?It can when others can't,
It will when others won't,
It goes where others don't.
15th Dec 2016 5:35 pm
lynalldiscovery
Member Since: 22 Dec 2009
Location: Maidstone
Posts: 7274
Injector theory may be sound, but theres many makes of diesels running around with one or more dodgy injectors and you dont hear of them snapping cranks, audi 2.0tdi springs to mine, so bad audi had to do recalls for the injectors they also suffered big time oil pump drive failures where they lost enough pressure to wreck the turbo, in fact many audis suffered from injector problems incl the 2.7tdi and the 3.0tdi again no snapped cranks that I have heard of.
15th Dec 2016 5:50 pm
john watson
Member Since: 10 Nov 2011
Location: lanark
Posts: 957
I would initially suspect incorrect heat treatment of the crankshaft but how is this for another explanation. It is impossible to secondary balance a vee four engine configuration. Ask ford aka their corsair range. The result is vibration. If we have a vee six with two cylinders duff then we not only have excess vibration the destroyer of all things mechanical but also the extra stress of lugging around two redundant lumps of metal. It would dependant more or less on what cylinders are the culprits. Only a thought!
15th Dec 2016 6:26 pm
DSL Keeper of the wheelie bin
Member Since: 11 May 2006
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All this talk of injectors makes me thankful for all new(ish) injectors all round.
Of course, the new injectors could be subject to manufacturing defects, affecting fuel metering and timing, therefore exacerbating the torsional loads applied to the crankshaft leading to premature failure Del.
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