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JonnyCJ



Member Since: 25 Apr 2011
Location: Wirral
Posts: 371

United Kingdom 
How to get this part out

I bought a used plenum off eBay (£20 delivered - bargain !) which came with throttle bodies, what I presume are MAP sensors ? various rubber connectors and jubilee clips.

I’m taking it to my local gearbox specialist for them to put in their parts washer and will clean up everything I’ve taken off (throttle bodies, MAP sensors) by hand.

There’s one thing I can’t remove which is shown in the pic. From googling the part number (6H4Q-6631-BA) it seems to be some sort of flap, actuated by vacuum. Can anyone enlighten me as to what it is (that’ll probably be you Disco Mike’s !) and either how to take it off, or if it’s safe to leave on.

Post #641650 Wed May 01 2024 12:53pm
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RRSTDV8



Member Since: 12 Aug 2011
Location: Northamptonshire
Posts: 8987

United Kingdom 2012 Range Rover Sport SDV6 HSE Orkney Grey

Is this the inlet plenum for a TDV8? If so, that's the device that deactivates one of the inlet ports to give better low end performance. It's also connected to a pipe that runs to the filter box.

Item 2 here:
https://www.rrsport.co.uk/gallery/albums/u...0pipes.pdf 2012 SDV6 - it's missing a couple of cylinders
2008 TDV8 - it was a labour of love and is much missed

Post #641656 Wed May 01 2024 5:35pm
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JonnyCJ



Member Since: 25 Apr 2011
Location: Wirral
Posts: 371

United Kingdom 

Yep - 3.6 TDV8 and is the same part you’ve identified. Looks purely mechanical to me, so wouldn’t envisage a good cleaning would do any harm, especially as it’ll get fully lubricated within about 5 mins if driving.

I’d still like to get it out though if possible.

Post #641658 Wed May 01 2024 6:23pm
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peterjj



Member Since: 15 Mar 2017
Location: Canberra
Posts: 48

Australia 

This actuator is connected to a butterfly valve type flap that is usually open ie left\right in your photo but the space in the manifold to get it out is a slot that goes 90deg to that. You need to push the vacuum actuator in to close the flap so it aligns with the slot hole in the manifold so you can wriggle and lift out actuator and arm and valve all at once (after screws have been remove of course) Pete
2008 L320 TDV8
2022 Hilux Rugged-X

Post #641664 Wed May 01 2024 10:46pm
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peterjj



Member Since: 15 Mar 2017
Location: Canberra
Posts: 48

Australia 

RRSTDV8 wrote:
Is this the inlet plenum for a TDV8? If so, that's the device that deactivates one of the inlet ports to give better low end performance. It's also connected to a pipe that runs to the filter box.


Actually, this bit controls balance between left and right intake manifolds (item2). The port deactivation actuators look similar but are at the rear end of each intake manifold thing (item7). Smile Pete
2008 L320 TDV8
2022 Hilux Rugged-X

Post #641665 Wed May 01 2024 10:52pm
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JonnyCJ



Member Since: 25 Apr 2011
Location: Wirral
Posts: 371

United Kingdom 

Great knowledge - many thanks Peter !

Post #641666 Thu May 02 2024 5:51am
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RRSTDV8



Member Since: 12 Aug 2011
Location: Northamptonshire
Posts: 8987

United Kingdom 2012 Range Rover Sport SDV6 HSE Orkney Grey

peterjj wrote:
RRSTDV8 wrote:
Is this the inlet plenum for a TDV8? If so, that's the device that deactivates one of the inlet ports to give better low end performance. It's also connected to a pipe that runs to the filter box.


Actually, this bit controls balance between left and right intake manifolds (item2). The port deactivation actuators look similar but are at the rear end of each intake manifold thing (item7). Smile


Ah, yes, you're right now I've looked at it again. Posted in haste originally. Embarassed Laughing Laughing 2012 SDV6 - it's missing a couple of cylinders
2008 TDV8 - it was a labour of love and is much missed

Post #641671 Thu May 02 2024 5:27pm
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JonnyCJ



Member Since: 25 Apr 2011
Location: Wirral
Posts: 371

United Kingdom 

Had a go at this today, albeit briefly. Didn’t manage to get it out. I think it’s a bit like picking a lock, in that the flap needs to align exactly with the slot.

By closing it I assume your pulling against the spring, rather than pushing ?

Post #641673 Thu May 02 2024 5:55pm
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peterjj



Member Since: 15 Mar 2017
Location: Canberra
Posts: 48

Australia 

yep, the actuator arm goes into the actuator. Pete
2008 L320 TDV8
2022 Hilux Rugged-X

Post #641682 Thu May 02 2024 10:37pm
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