Home > Puma (Tdci) > Turbo Gasket - leaking again :( |
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custom90 Member Since: 21 Jan 2010 Location: South West, England. Posts: 20549 |
Have a chat with Gary @ Alive tuning.
He may have a solution or at least plenty of knowledge of such things. |
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28th Feb 2016 1:59pm |
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Bogblaster Member Since: 04 Jun 2007 Location: Glawstershire Posts: 119 |
Both AndrewS and I had this problem back in 2007/08, sounds like a blade of grass between your thumbs?
IIRC LR changed the gasket set to a much thicker one, but I've had more than 3 sleeps since then. I'm assuming yours is re-mapped? That was the trouble with mine. BB 2019 MY Disco 5 HSE Lux Audi A4 Avant 3.0L TDI Quattro - WOW 2016 90 Adventure |
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28th Feb 2016 2:30pm |
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Alive Tuning Member Since: 01 Mar 2010 Location: Louth Posts: 610 |
The ROOT cause of this happening is high EGT, distorting the mating face of the exhaust manifold, and sometimes the mating face of the turbocharger. It's usual to see the outer points of the triangle that have distorted, leaving a gap between the faces and often snapping the bolt/stud.
Installing the thicker (repair) gasket actually increases the stress on the already compromised mating faces, as when tightening, you'll be trying to bend back the casting. The best repair is to remove the manifold and have the faces checked and machined flat. Click image to enlarge Click image to enlarge Assuming the mating face of the turbo to manifold flange is true, then rebuild using a genuine gasket. Ultimately there is a risk of this reoccurring and the reasons the EGT's are getting so high needs to be addressed. Kind Regards, Gary. |
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29th Feb 2016 12:57am |
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carrotbay Member Since: 18 Aug 2013 Location: Northants, UK Posts: 702 |
Thanks for your replies. Yes, it is remapped and in the early days, before I knew better, it was remapped without any other modifications such as intercooler etc and obviously got pretty hot.
I'll get the manifold off and get it checked and machined if necessary. (This may be the excuse I needed for a hybrid turbo ) 2008 Defender 110 XS SW - M57N2 / 6HP28X |
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29th Feb 2016 7:02am |
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Supacat Member Since: 16 Oct 2012 Location: West Yorkshire Posts: 11018 |
Is there any common cause of high EGT on an unmapped engine? |
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27th Dec 2017 1:40pm |
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Caterham Member Since: 06 Nov 2008 Location: Birmingham Posts: 6312 |
does the map not cut back the power when temps get high?
I'm running 450Nm for approx. 50k miles now (100k miles total) and the engine has been one of the few areas where nothing seems to have been ok? not exactly helpful but makes me wonder whether things aren't quite 'right'? perhaps addressing the high temps should be resolved rather than simple replacing the gasket? |
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27th Dec 2017 6:52pm |
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