Member Since: 22 Dec 2009
Location: Maidstone
Posts: 7274
galwaygreen wrote:
not designed to.....designed to stop rotation likle in the good old days...why did they ever change it
I still think theres an underlying issue with the engine as tags or not the shells should not rotate.
Whenever I hear of one overheating and being saved in the nick of time, I think yes but was it in the nick of time? or is that going to come back and haunt the next owner?
Same with people running them low on oil, pushing the oil changes to far and so on.
Plenty of other engines sout their with no shell tabs, td5 being one and you dont hear of them wrecking their shells/crank due to rotation.
beats me why the bearings aren't drilled with dozens of holes so rotation wouldn't block the oil flow.
10th Jun 2018 5:27 am
Dan1720v
Member Since: 28 Mar 2018
Location: Street/Somerset
Posts: 176
Because the bearing spinning will be due to a lack of pressure anyway.
10th Jun 2018 7:14 am
lynalldiscovery
Member Since: 22 Dec 2009
Location: Maidstone
Posts: 7274
Thats what I was trying to say, they spin because of something else going wrong.
Tabs or not, no oil = trouble.
10th Jun 2018 1:19 pm
DSL Keeper of the wheelie bin
Member Since: 11 May 2006
Location: Off again! :-)
Posts: 73086
In my case if that happened it was coz something was blocked or the pump wasn’t working as mine my engine was showing full on the dipstick. And oils was showing the glint of bits of metal in it.
10th Jun 2018 1:26 pm
Daro
Member Since: 08 Jun 2018
Location: Silesia
Posts: 5
What does it mean for me?
Can it be repair, what about the cost?
11th Jun 2018 8:56 am
kajtzu
Member Since: 10 Aug 2017
Location: Helsinki
Posts: 6754
I thought if the D4 engine is fu...bar it’ll be 15k+ EUR/GBP that instant to get a new one from JLR.
11th Jun 2018 9:33 am
DiscoJeffster
Member Since: 27 Feb 2016
Location: Perth
Posts: 204
Daro it means it’s ruined. You will need to get a new engine unfortunately. There are very few people with credibility in rebuilding them. They’re also ridiculously expensive.
12th Jun 2018 1:32 pm
DrewLR4
Member Since: 17 Jan 2018
Location: South Devon
Posts: 173
Why is it that no one re builds or recons these engines? there must be plenty out there, or do they all end up going back to JLR on an exchange basis and get re built by them?
12th Jun 2018 1:44 pm
Gareth Site Moderator
Member Since: 07 Dec 2004
Location: Bramhall
Posts: 26775
1. Lack of parts.
2. Lack of information
3. When the crank snaps, it probably the block.
12th Jun 2018 2:01 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 5044
Hi Guy's,
Given that there seems to be no small number of 05,06 and even earlier 04' D3's still on the road. Could the crank issue simply be put down to maintenance? ie Overextended oil servive intervals, wrong or poor quality oil, cheap or badly fitted filters, etc.
It seems to be very hit and miss as to whether a TDV6 engine crank/bearings will fail, which doesn't fit with the very high standard of modern engineering practice, and ultra fine machine tolerences.
I suppose I'm saying if there was a production line poor quality issue, would this not manafest itself in vast numbers of consecutively failed engines rather than what appears to be a random fail rate?
12th Jun 2018 2:53 pm
DSL Keeper of the wheelie bin
Member Since: 11 May 2006
Location: Off again! :-)
Posts: 73086
Mine wanted for nothing, even had intermediate oil changes, and still her engine went PT.
12th Jun 2018 3:02 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 5044
Wow! Well perhaps the issue is more one of poor materials technology, and not so much production line inconsistencies?
12th Jun 2018 3:25 pm
DSL Keeper of the wheelie bin
Member Since: 11 May 2006
Location: Off again! :-)
Posts: 73086
Just part of the random fun and frolics that is driving a D3/4.
12th Jun 2018 3:30 pm
lynalldiscovery
Member Since: 22 Dec 2009
Location: Maidstone
Posts: 7274
PROFSR G wrote:
Hi Guy's,
Given that there seems to be no small number of 05,06 and even earlier 04' D3's still on the road. Could the crank issue simply be put down to maintenance? ie Overextended oil servive intervals, wrong or poor quality oil, cheap or badly fitted filters, etc.
It seems to be very hit and miss as to whether a TDV6 engine crank/bearings will fail, which doesn't fit with the very high standard of modern engineering practice, and ultra fine machine tolerences.
I suppose I'm saying if there was a production line poor quality issue, would this not manafest itself in vast numbers of consecutively failed engines rather than what appears to be a random fail rate?
The thing is unless you have owned the car from new you will never know whats gone wrong or potentially gone wrong in its past life.
Even then unless you have changed the oils yourself you wont know if its had the right oil/been ran dry and other things that can go worng during servicing.
Im sure weve all had cars that have overheated at some time in our lives, its just come cars can just brush it off and for others that are closer to the edge its their death knell, maybe not straight away but some time in the future.
Bear in mind people dont check their oil/coolant/tyres weekly, some never check them at all, weve all talked to someone who said oh yeh my cars way overdue a service and so on.
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the block.
