D4 Secondary turbo drain modification LTB00487 with photos
I've become increasingly paranoid about the large puff of blue smoke from the exhaust pipes caused by oil pooling in the secondary turbo on my 2010 D4. This 2nd turbo only kicks in at about 2800 rpm, so after a long motorway trip there can be quite a bit of oil in there, creating a fairly spectacular cloud for the vehicles behind!
LTB00487 is Land Rover's solution to the problem, which involves fitting a shorter oil return pipe from the turbo that drains directly into the block, rather than lower down in the sump where the original pipe goes to.
PDF of LTB00487v6 here...
http://www.disco3.co.uk/gallery/albums/use...0-%203.pdf
1st step was to disconnect the turbo bypass valve from the bottom of the intercooler, allowing any oil to drain out of the intercooler...
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Despite having 112000 miles on the clock I was quite surprised at the amount of oil and water (condensation) that drained out of the intercooler....
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I also decided to run some paraffin through the intercooler from the top, which cleared out some more of the sludge, blowing through with a hair drier to dry it out on completion.
Next task is to remove the starter motor, which gives access to the port on the side of the block that the new pipe feeds into. The layout underneath a D4 must be different to a D3, as I'd read a few threads on here about how difficult the D3 Starter is to remove, but with a bit of trial and error this one came out fairly easily...
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With the starter motor out of the way you can now get at the bottom of the turbo and also the port on the side of the block (seen here with the blank still fitted, secured by 1 bolt)...
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New oil return pipe (LR044556) fitted, with new gasket (LR013235)...
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New pipe compared to the old one...
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Blanking plate (LR044555) fitted to sump where old drain pipe used to go....
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Whilst I was underneath I decided to remove and check the turbo bypass valve as some people have had problems with it sticking. No problems with mine though, it's been very well lubricated from within!
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I won't tempt fate by commenting on how successful the modification has been just yet, but initial impressions are positive! With a few more miles of motorway and urban driving, time will tell. The shorter pipe length and drain into the block above the oil level certainly should allow the oil to drain out of the turbo faster than it did before, so fingers crossed. I believe all vehicles after VIN DA676456 were fitted with the shorter pipe as standard, so this only applies to earlier D4s (date tbc).Previously:
2005 D3 2.7 TDV6 S
1984 90 2.25 Petrol CSW
1992 90 200TDi Hard Top
1995 Discovery ES 300TDi
2003 90 TD5 Truck Cab
Last edited by ridgeback_moor on 27th Jul 2015 10:11 am. Edited 1 time in total
Well I've now done 500+ miles since completing this mod, and I think I can safely say it's cured the smoky secondary turbo problem. Now I'm not afraid to overtake without causing a white out behind me! It's just a shame LR wouldn't contribute to correction of their own design faults Previously:
2005 D3 2.7 TDV6 S
1984 90 2.25 Petrol CSW
1992 90 200TDi Hard Top
1995 Discovery ES 300TDi
2003 90 TD5 Truck Cab
1st Aug 2015 5:36 pm
CUCO
Member Since: 26 May 2011
Location: Spain & Oleee!!!
Posts: 609
top job, thanks for the detailed description --
2010 Defender Puma 90 + BAS remap + Alive IC + Slickshift + Ashcroft ATB rear
2015 Range Rover Sport V8 Supercharged
Out of interest how much were the parts?LRs are a fond memory, apart from the maintenance.
12th May 2017 4:38 pm
jack2006
Member Since: 12 Feb 2009
Location: Matlock, Derbyshire
Posts: 106
Cost of parts
Just done my 2012 D4 and cost from dealers which includes the oil drain plug for engine and plugs for automatic gearbox oil change that has yet to be done:-
If you have a look at the PDF in post's it is the LR document with the 3 part numbers required for oil return pipe replacement which is Pipe, Gasket and blank plate.
Biggest pain was removing the starter motor, although using 4 post lift to get access did make it easier
As per other posts can confirm it has worked a treat and no more smoke on 'kickdown'.
Don't forget to disconnect and drain the feed pipe also if you do mod as per LR document.
5th Jun 2017 3:31 pm
AdrianBBS
Member Since: 10 Aug 2015
Location: Limassol
Posts: 3
Nice!
7th Jun 2017 9:35 pm
Kimi
Member Since: 26 Mar 2013
Location: Home
Posts: 62
The LTB mentions only TDV6 engine. Does the SDV6 have the same problem?
8th Jun 2017 6:50 am
Disco_Mikey
Member Since: 29 May 2007
Location: Dundee, Scotland
Posts: 20836
Member Since: 22 Jun 2011
Location: southampton
Posts: 2520
to be fair mikey
only landrover would put two different engine related badges on the same engined car
im sure other examples will be forthcoming now ive said thatMY05 SE D3 Manual my first LR what a car
MY10 HSE D4 auto
MY14 XXV more buttons than the spaceshuttle
8th Jun 2017 8:03 am
Disco_Mikey
Member Since: 29 May 2007
Location: Dundee, Scotland
Posts: 20836
I wonder if this fix is covered under Land Rover Approved Warranty In Spain - 2018 F Pace - Down and out's Velar
In UK - Dare not say on this Forum
Gone - Lots of Lode Lane vehicles.
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