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Dave B



Member Since: 10 Oct 2019
Location: East/West Sussex Coast Borders
Posts: 430

United Kingdom 2010 Range Rover Sport TDV8 HSE Santorini Black
Exhaust Manifolds

Has there been any definative reason given as to why the 3.6 TDV8 exhaust manifolds warp?

I am in the process of having to replace mine and was wondering if there is any mod can be done to stop this happening again in the furure.

Thanks in advance

Post #588365 Thu Oct 10 2019 7:39am
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Disco_Mikey



Member Since: 08 Apr 2012
Location: Dundee, Scotland
Posts: 4321

United Kingdom 2010 Range Rover Sport Supercharged HSE Santorini Black

Once the manifolds have warped, they won't warp again (same as Td5 Wink )

Either, the studs snap and the manifold warps, or the manifold warps and the stud snaps. It's difficult to say

Either way, we skim the manifolds, new studs, nuts and gaskets Thumbs Up

Post #588368 Thu Oct 10 2019 8:36am
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Dave B



Member Since: 10 Oct 2019
Location: East/West Sussex Coast Borders
Posts: 430

United Kingdom 2010 Range Rover Sport TDV8 HSE Santorini Black

I see, thanks.

The 'skimmer' who the garage uses wouldn't take it on, so had to buy new ones as time is an issue, but a machine shop that my lad uses in Grimsby is going to have a go, and also look into the possibility of making up a set in stainless steel.

Will come back if the latter proves viable.

Post #588378 Thu Oct 10 2019 10:06am
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Disco_Mikey



Member Since: 08 Apr 2012
Location: Dundee, Scotland
Posts: 4321

United Kingdom 2010 Range Rover Sport Supercharged HSE Santorini Black

I think we pay around £300 per manifold, so it's not cheap, but a fair sight cheaper than a new part

Post #588379 Thu Oct 10 2019 10:33am
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Dave B



Member Since: 10 Oct 2019
Location: East/West Sussex Coast Borders
Posts: 430

United Kingdom 2010 Range Rover Sport TDV8 HSE Santorini Black

Tell me about it, £678.06 +VAT each, and every factor we spoke to gave an identical price.

Post #588381 Thu Oct 10 2019 10:43am
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Dave B



Member Since: 10 Oct 2019
Location: East/West Sussex Coast Borders
Posts: 430

United Kingdom 2010 Range Rover Sport TDV8 HSE Santorini Black

'Our' engineering shop intends to use a grinding machine, not actually skim, apparently.

Post #588382 Thu Oct 10 2019 10:52am
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Dave B



Member Since: 10 Oct 2019
Location: East/West Sussex Coast Borders
Posts: 430

United Kingdom 2010 Range Rover Sport TDV8 HSE Santorini Black

Update.
Manifold too small to fit in machine, so no luck there.
As for making up in stainless, too costly for a small run, so also a non starter.

Post #589116 Wed Oct 23 2019 9:30am
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aaronjb



Member Since: 26 Jun 2019
Location: Northampton
Posts: 447

United Kingdom 

I had a quick look at a picture - assuming they look like the L322 ones (that was the first pictures I found) it seems like they'd be a nightmare to hold square, but once you'd sorted that out, anywhere with a Bridgeport and a fly cutter ought to be able to skim them..

Work holding is probably why they cost what they do to get skimmed, though. Of course, finding an old-school engineering shop with a manual mill who will do a one-off job is hard, these days Sad

If you really needed it done I'd suggest a trawl of the places at Bicester Heritage.. but if you already have a replacement, and since Bicester isn't exactly near you, it's probably not worth the trip? 2014 BMW 530d Touring, 2006 BMW 650i, 2018 Mini Cooper S

Post #589118 Wed Oct 23 2019 10:14am
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