Member Since: 07 Dec 2004
Location: Bramhall
Posts: 26772
New manifold fitted..
Got my car back this morning, new near side manifold fitted.
All back to normal except the credit card!
21st Nov 2020 1:40 pm
Moo D3 Decade
Member Since: 13 Aug 2010
Location: UK
Posts: 14377
Feel your pain.
What frustrates me is that this is a design and manufacturing fault that LR has never taken responsibility for. 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
21st Nov 2020 1:44 pm
Gareth Site Moderator
Member Since: 07 Dec 2004
Location: Bramhall
Posts: 26772
I know, but it’s lasted nearly 8 years and 118k miles, so that’s life I suppose. First big bill this car has had.
Cheers n Gone Nick MY16 D4 Landmark SDV6 (The Ice Maiden)
Uncle Ray's spare wheel protector
MY08 D3 HSE Stornoway (Miss Moneypit) The money tree withered......
21st Nov 2020 2:44 pm
ianm27
Member Since: 02 Jun 2016
Location: Hertfordshire
Posts: 2154
Know that pain Gareth, had both my inlet manifolds changed in August
But, the car does seem more responsive now and RPM at 70 mph is about 10% less Uncle Ray's spare wheel protector
Limo Tint
Blackvue front & rear dashcam
Cruise control switch pack
Bodsy's remote for FBH
21st Nov 2020 3:23 pm
Gary_P
Member Since: 03 May 2016
Location: Kent
Posts: 1656
I'm interested to know, is this something that happens to all model years or did they change the design/manufacture at an stage in the late life of the D4? I'm trying to start preparing myself.
CheersGary
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Discovery 4 HSE 2016MY
21st Nov 2020 3:42 pm
DSL Keeper of the wheelie bin
Member Since: 11 May 2006
Location: Off again! :-)
Posts: 73075
Good to hear the old(ish) girl is back to rude health.
Just, whatever you do, don’t tell her about her impending replacement. If you do you know the old saying, Hell hath no fury like a Disco scorned ...........
21st Nov 2020 3:53 pm
Gareth Site Moderator
Member Since: 07 Dec 2004
Location: Bramhall
Posts: 26772
Gary_P wrote:
I'm interested to know, is this something that happens to all model years or did they change the design/manufacture at an stage in the late life of the D4? I'm trying to start preparing myself.
Cheers
It seems to be pretty inevitable at 100k+ miles. Looking at the old part, it has a very small crack on the shoulder of a tight radius, in the middle of manifold, at the point where greatest stress would be felt when the turbos kick in.
It would be an interesting exercise to see age and mileage of failed manifolds. My Indy who did the work said he had quite a pile of old manifolds that he had changed over the past couple of years. No common pattern though. Sometimes the left goes first, sometimes the right, occasionally both.
21st Nov 2020 4:14 pm
Gary_P
Member Since: 03 May 2016
Location: Kent
Posts: 1656
Thanks. What sort of cost is a repair at a good Indy?
Yes , it would be interesting to understand this. Age, mileage, type of driving etc. Obviously has to do with heating and cooling, so perhaps there are journey lengths that cause it to fail more. Need a metallurgist /aircraft engineer view. You would think LR would have some data or try to gather it.
Is this something other vehicles fail with or unique? Might be design/construction related. D5?
So much LR could do if they put their minds to it.
CheersGary
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Discovery 4 HSE 2016MY
22nd Nov 2020 9:49 am
Moo D3 Decade
Member Since: 13 Aug 2010
Location: UK
Posts: 14377
It's made of plastic and is a known manufacturing fault. I doubt the type or length of journey's have anything to do with it. Both mine went under heavy load whilst accelerating. One at 6 1/2 years (129k) the other at 7 1/2 years (142k).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
22nd Nov 2020 10:22 am
Ali1971
Member Since: 13 Jun 2016
Location: Dalgety Bay
Posts: 817
Could they be strengthened before they break ? Have to say seems very shoddy for this to happen. However I dare say not all do either , so just your luck it’s either the crank or the manifold
22nd Nov 2020 11:31 am
Gary_P
Member Since: 03 May 2016
Location: Kent
Posts: 1656
Thanks Moo.
Plastic! Doesn't sound up to the job. Didn't realise. Good old injection moulding. Had an issue with a duct that kept cracking in the same place in my gas boiler.Gary
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Discovery 4 HSE 2016MY
22nd Nov 2020 2:12 pm
stick
Member Since: 13 Jan 2010
Location: hants
Posts: 604
I have my 107k 2015 d4 booked in for new belts in December. Is it cost-effective to do manifolds at same time, or better to just wait..?d4 HSE
22nd Nov 2020 2:19 pm
Gary_P
Member Since: 03 May 2016
Location: Kent
Posts: 1656
I thought belts were at 7 years?Gary
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Discovery 4 HSE 2016MY
22nd Nov 2020 2:24 pm
adam
Member Since: 20 Sep 2005
Location: Home and Happy
Posts: 6917
Gary_P wrote:
Thanks Moo.
Plastic! Doesn't sound up to the job. Didn't realise. Good old injection moulding. Had an issue with a duct that kept cracking in the same place in my gas boiler.
It’s the convulated shape and the additional other parts that hang off it that means it has to be a moulding (or so I was told by the same Indy that replaced Gareth’s)
Intake Manifold on my Golf and wife’s Polo are also plastic as was the Manifold on the Sigma engine I put into a Caterham, all three looked a hell of a lot more straightforward to replace than on a D4, but not heard of any systemic failures like a D4. Wonder if a D4 Manifold could be 3D printed in a more robust material?Now Golf GTI PP, 7 speed DSG.
Ex D3 and D4
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