Last edited by gstuart on 30th Aug 2018 7:34 pm. Edited 3 times in total
30th Aug 2018 3:42 pm
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 13635
30th Aug 2018 3:49 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4655
Its like watching the automotive equivalent of a very scary movie yµ (idµ - eAµ) ψ=mψ
30th Aug 2018 3:58 pm
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 13635
The film “ saw “ comes to mind
Or gone in 60 x seconds
30th Aug 2018 4:02 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4655
Haven't seen either, thank God! yµ (idµ - eAµ) ψ=mψ
30th Aug 2018 4:17 pm
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 13635
U haven’t seen saw ,
Well there is version 1-2-3-4-
Imagine there will be a few more film suggestions
30th Aug 2018 4:19 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4655
As many versions as TDV6 implosions perhaps? yµ (idµ - eAµ) ψ=mψ
30th Aug 2018 5:25 pm
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 13635
I’ve only managed to read the first few pages
Everyone else will be able to understand it better than me
30th Aug 2018 5:42 pm
Globetrotter448
Member Since: 21 Mar 2017
Location: Londonderry NSW
Posts: 1783
Looks like its st....ed. From pictures it looks like the inserts/bearings moved to a point where the white metal wore to a point where the oil channel was blocked. Did the report indicate by inference that the engine was wrong for the vehicle (crank short, liners narrow etc).
Will LR come to the replacement party?
31st Aug 2018 3:11 am
hugeviking
Member Since: 08 Jun 2010
Location: cotswolds
Posts: 1482
Looks like the back of the bearing shell has collapsed.
Member Since: 21 Oct 2016
Location: kent
Posts: 13635
Alas not having enough mechanical knowledge to fully understand the report
Do u guys think it’s actually answered the questions relating where the shells have spun and why they have done so
Apologises asking daft questions and indeed know it’s ultimately an uncomfortable read
Many thks
31st Aug 2018 1:53 pm
Sloss
Member Since: 18 Aug 2013
Location: Aberdeenish
Posts: 1691
A shell will always have a tendency to spin round with the crank unless restrained in some way. That's just Physics.
IMHO the best way of restraint in this type of engine is to have 'tabs' on the bearing shells which locate in machined grooves on the bearing cap and crankcase for big ends and mains respectively. Mechanically located in place these will not spin.
However, in the dubious wisdom of a Design Engineer, backed up by his Superior and probably egged on by an Accountant the 'tabs' were omitted. 'Plenty friction to hold it all in place'.
Seems they were wrong.......Stew,
2010 D4 gone but I really loved it
Went back to Merc - C350 AMG
31st Aug 2018 5:47 pm
DSL Keeper of the wheelie bin
Member Since: 11 May 2006
Location: Off again! :-)
Posts: 72787
I remember doing the engine factory tour and heard the phrase “friction fit” a lot. I did wonder what happens when things wear out and there is a little less friction to do the fitting.
31st Aug 2018 5:57 pm
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 13635
Thks and appreciate the knowledge shared
Right where’s that glue gun to stop the shells from moving
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