Member Since: 13 Aug 2010
Location: Wiltshire
Posts: 13863
Nice road trip around Worthing in the Jazz. New Defender L663 110 SE (known as Noddy!)
Sold Volvo XC90 R-Design (known as Basil)
Sold - D4 HSE (Known as Gerty)
No longer the Old Buses original owner
231,000 miles and counting
05 S manual owned from March 2005
D4 Face lifted
Still original injectors and turbo
V8 Front brakes
BAS Remap, Allisport Intercooler and deCat
EGRs blanked
T-Max split charge
Hanibal Expeedition rack
Prospeed ladder
Duratrac tyres
IID BT
BAS FBH control
16th Jan 2019 8:32 am
DSL Keeper of the wheelie bin
Member Since: 11 May 2006
Location: Off again! :-)
Posts: 72768
She may well get to Nordkapp on next RT.
16th Jan 2019 8:49 am
Pelyma
Member Since: 06 Jan 2005
Location: Patching, Sussex
Posts: 15496
Moo wrote:
Nice road trip around Worthing in the Jazz.
Don’t encourage him down here, I might find him on my drive one evening.DS3 TDV6 HSE - Silver with Alpaca (old one) Gone
DS3 TDV6 HSE- Silver with Alpaca (new one) Gone
D4 HSE Lux - Montalcino Red Gone
Porsche Cayenne V8 Diesel S
which I have suggested might be the solution in the past.
I have used it, with great success, on rally & race cars, but have never got round to fitting it to a Discovery.
It would help with oil pressure on first starting, and with the bl..dy stop/start.
NJSSAm I Gammon or Woke ? - I neither know nor care.
2016 Discovery 4 Landmark
2011 Mercedes Benz SL350 (R230)
1973 MG B GT V8 - 3.9L John Eales engine, 5 speed R380 gearbox, since 1975.
1959 MGA roadster - 1.9L Peter Burgess Engine - 5 speed gearbox
Past LRs - Multiple FFRs, Discos & a Series I - some petrol, some diesel,
none Electric or H2 fuel cell - yet.
There are 10 types of people in this world: Those who understand binary, and those who don’t.
16th Jan 2019 10:42 am
DSL Keeper of the wheelie bin
Member Since: 11 May 2006
Location: Off again! :-)
Posts: 72768
Pelyma wrote:
Moo wrote:
Nice road trip around Worthing in the Jazz.
Don’t encourage him down here, I might find him on my drive one evening.
Now that sounds like an invitation.
16th Jan 2019 10:54 am
DSL Keeper of the wheelie bin
Member Since: 11 May 2006
Location: Off again! :-)
Posts: 72768
Just a little reminder re how an engine sounds when what engineers like to call “friction fit” doesn’t.
16th Jan 2019 10:58 am
Pelyma
Member Since: 06 Jan 2005
Location: Patching, Sussex
Posts: 15496
DSL wrote:
Pelyma wrote:
Moo wrote:
Nice road trip around Worthing in the Jazz.
Don’t encourage him down here, I might find him on my drive one evening.
Now that sounds like an invitation.
You're more than welcome, good pub next door, perhaps should do a forum thing for ex Disco owners Suppose could let the riff raff in tooDS3 TDV6 HSE - Silver with Alpaca (old one) Gone
DS3 TDV6 HSE- Silver with Alpaca (new one) Gone
D4 HSE Lux - Montalcino Red Gone
Porsche Cayenne V8 Diesel S
16th Jan 2019 11:05 am
DSL Keeper of the wheelie bin
Member Since: 11 May 2006
Location: Off again! :-)
Posts: 72768
Maybe some time when I’m back in the country. Could be a while though.
16th Jan 2019 11:06 am
James W
Member Since: 27 Mar 2008
Location: Wirral, UK
Posts: 3067
Re: Tagged main bearings
OvalAutos wrote:
Don't be fooled into thinking that a tagged bearing shell won't spin; they still do
Two main caps. One with a tag cutout and the other a standard no tag.
Genuinely don't know but curious - what is the tagging supposed to achieve? I would have thought a 'protruding' tag would stop any movement, not a cutout? How does it work? And do different engine years have this (or not) or is it something people have had 'done'?
Cheers D4 XS, gone, much loved, never forgotten
2018 FFRR SDV8 Autobiography - Gone to someone with less sense and more time to enjoy it
2016 Toyota Hilux Invincible - Liberating experience
16th Jan 2019 11:14 am
rrhool
Member Since: 28 Aug 2014
Location: Norfolk
Posts: 4399
Tagged bearing shells have been the norm in engine design for decades. Non-tagged bearing shells are a relatively recent 'invention'.
Not all new ideas are the best ideas!
If the LR engine has intrinsic design issues, even tagged bearings are not going to save it.Richard
D3 SE 2007. Triumph 2.5Pi 1973. Ferguson TEA20 1948.
Discovery 2 4.0 ES 2001- Gone
Discovery 1 300Tdi ES '95 - Gone
Range Rover Classic '79 - Gone
16th Jan 2019 11:22 am
lynalldiscovery
Member Since: 22 Dec 2009
Location: Maidstone
Posts: 7274
Td5 has non tagged shells and you dont hear of them spinning theirs.
16th Jan 2019 2:44 pm
lynalldiscovery
Member Since: 22 Dec 2009
Location: Maidstone
Posts: 7274
Hardware17 wrote:
well … the physics of it is that they spin when the friction between the moving bits and the bearing is greater than the forces keeping the bearing in place. usual suspect for this would be oil starvation.
But the interesting thing, from Ovalautos various posts is that even tabbed ones move. Notice it's "move" he uses and not "spin".
Is the implication they move sideways ? or is he saying they rotate a bit rather than spin freely ? (which might be how some would interpret "spin" )
I was also surprised to learn that in some racing engines, they are screwed in place !! I though that would not work as the screw would expand and score the crank … but would that matter ? the scored section would simply hold more oil, would it not ?
Thanks, but I realise that and was interested to hear ovalautos take on it, ie from someone who sees inside them daily, so should be genned up with the latest info?
I have posted before and I reckon its in the cars history, ie its had abuse some time in the past and now its come back to bite the current owner big time.
Thinking along the lines of wrong spec oil, short term overheat ie blown hose, leaking injector contaminating the engine oil etc
16th Jan 2019 2:48 pm
L319
Member Since: 14 Dec 2013
Location: Herefordshire
Posts: 2079
I always thought the tags were to position the shells correctly rather than to stop spinning. If its going to pick up it will go. I had an ex army land Rover in the 1970's that the tangs hadn't been lined up with cut outs when assembled by the REME and it ran OK. They were just flattened as though they didn't exist
16th Jan 2019 2:55 pm
DiscoJeffster
Member Since: 27 Feb 2016
Location: Perth
Posts: 204
Tangs were there to assist alignment during assembly. They were never about retaining the bearing in place under normal usage and are not there to stop a bearing rotating. If a bearing moves it’s due to physical pickup which it is not designed for and means impending failure. A tang will not help that. The engine is dead.
16th Jan 2019 3:08 pm
Andy500
Member Since: 27 Aug 2018
Location: Cheshire
Posts: 228
DSL wrote:
Just a little reminder re how an engine sounds when what engineers like to call “friction fit” doesn’t.
So does that video show an engine with the shell moved But before it all locked up and the Crank?
I thought it was an immediate failure with no way of identifying it occurring? It just goes boom!
Although that’s just what I had assumed so maybe wrong?
You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum
She may well get to Nordkapp on next RT. 
the Crank?
