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Oil System Schematic
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M3DPO
 


Member Since: 22 Sep 2010
Location: Notts.
Posts: 8221

England 2014 Discovery 4 3.0 SDV6 HSE Lux Auto Corris GreyDiscovery 4

I'm getting 20psi (1.4bar) on idle
and 50psi (3.4bar) when revved:

That’s much better and good news as it makes a 0-100psi gauge suitable and there is a good choice available when connected to the sender with an extension pipe, the original plug connector wire will need to be extended.
I am looking at mounting the gauge behind the steering wheel on the column shroud.
I have a D4 by the way!
 It can when others can't,
It will when others won't,
It goes where others don't. 
 
Post #208798529th Sep 2019 10:03 am
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Pete K
 


Member Since: 15 Jan 2016
Location: GL
Posts: 10673

England 2005 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

These figures were taken before I fitted the new oil pump. (so this one had done 110K)

The connection between the oil pump and sump/pickup was a little loose at the time (didn't know that at the time).
This resulted in it taking a while for the oil light to go out after startup, hence me putting a gauge on to find out what the pressure was during running and checking it was within spec.
  
Post #208799129th Sep 2019 10:19 am
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gstuart
 


Member Since: 21 Oct 2016
Location: kent
Posts: 14108

United Kingdom 2005 Discovery 3 TDV6 Base 7 Seat Auto Java BlackDiscovery 3

M3DPO wrote:
I'm getting 20psi (1.4bar) on idle
and 50psi (3.4bar) when revved:

That’s much better and good news as it makes a 0-100psi gauge suitable and there is a good choice available when connected to the sender with an extension pipe, the original plug connector wire will need to be extended.
I am looking at mounting the gauge behind the steering wheel on the column shroud.
I have a D4 by the way!


Hiya

Will u be fitting one the 52mm Gauges then plse or an led monitor

If u would be so kind to post up some piccies plse when u get round to it

Wonder if there’s a lot of difference in oil pressure between the D3/4
   
Post #208799929th Sep 2019 11:07 am
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gstuart
 


Member Since: 21 Oct 2016
Location: kent
Posts: 14108

United Kingdom 2005 Discovery 3 TDV6 Base 7 Seat Auto Java BlackDiscovery 3

Pete K wrote:
These figures were taken before I fitted the new oil pump. (so this one had done 110K)

The connection between the oil pump and sump/pickup was a little loose at the time (didn't know that at the time).
This resulted in it taking a while for the oil light to go out after startup, hence me putting a gauge on to find out what the pressure was during running and checking it was within spec.


Nice one pete sharing the figures , have u left the gauge connected or just used it temp to measure the outputs plse

Tempted to fit the one with the hose and small digital monitor, thought it shouldn’t be too difficult cutting the plug off and extending the wiring

Sometimes wonder if remapping the TDV6 increases pressure within the engine / pistons by adding more fuel etc , as always sorry for the daft question

Many thks as always in advance
   
Post #208800229th Sep 2019 11:13 am
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Pete K
 


Member Since: 15 Jan 2016
Location: GL
Posts: 10673

England 2005 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

I only fitted it temp. under the bonnet, and tested while stationary

Most OEM car gauges go up to a maximum of 5 bar (73psi)

the pressure relief valve operates below this figure. (around 65)
  
Post #208800629th Sep 2019 11:31 am
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gstuart
 


Member Since: 21 Oct 2016
Location: kent
Posts: 14108

United Kingdom 2005 Discovery 3 TDV6 Base 7 Seat Auto Java BlackDiscovery 3

Thks Pete Thumbs Up

See that led one I’ve been looking at goes from zero to 116 Psi and adjustable alarm

Don’t think it would be too difficult to fit, will be interesting to see what others install
   
Post #208802829th Sep 2019 12:39 pm
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gstuart
 


Member Since: 21 Oct 2016
Location: kent
Posts: 14108

United Kingdom 2005 Discovery 3 TDV6 Base 7 Seat Auto Java BlackDiscovery 3

This oil pressure gauge kits looks like it will fit , just ensuring the gauge goes high enough in pressure wise

Wondering what u thought please , thks as always Thumbs Up

https://www.ebay.co.uk/itm/Car-Truck-Oil-P...Swbe9daoBW








   
Post #209189513th Oct 2019 9:37 am
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gstuart
 


Member Since: 21 Oct 2016
Location: kent
Posts: 14108

United Kingdom 2005 Discovery 3 TDV6 Base 7 Seat Auto Java BlackDiscovery 3

OvalAutos wrote:
I would use the pressure sensor from the TDV8 as it is much shorter, has the same fitting and a lower threshold (0.7 bar).




Hi

May i ask, is this ok please https://www.ebay.co.uk/itm/70146-KW-FACET-...ea5f65d3f8

Also wondering if the sensor needs to be 1/4 or 1/8 , because I’m trying to work out what fittings I need to use copper tube instead of a flexible hose Many thks , Thumbs Up

Edit , apologises , found it in the other link , it’s 1/4 NPT
   
Post #209189613th Oct 2019 9:46 am
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gstuart
 


Member Since: 21 Oct 2016
Location: kent
Posts: 14108

United Kingdom 2005 Discovery 3 TDV6 Base 7 Seat Auto Java BlackDiscovery 3

Hiya

Does anyone know where I can get M14 x 1.5 stainless steel fittings from please, ie like a short nipple , equal tee and elbow , searched ebay for hours but can only find BSP

Also would there be any risk of electrolysis using stainless , it’s so I can then remove the existing oil pressure switch, short nipple , tee which will allow room and will eliminate the use of having any hoses

Will also get the shorter sensor as recommend and ensure I take some pics of the install


Thks again Thumbs Up
   
Post #209281316th Oct 2019 12:18 pm
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OvalAutos
 


Member Since: 28 Dec 2018
Location: Cradley Heath
Posts: 382

United Kingdom 

gstuart wrote:
OvalAutos wrote:
I would use the pressure sensor from the TDV8 as it is much shorter, has the same fitting and a lower threshold (0.7 bar).




Hi

May i ask, is this ok please https://www.ebay.co.uk/itm/70146-KW-FACET-...ea5f65d3f8

Also wondering if the sensor needs to be 1/4 or 1/8 , because I’m trying to work out what fittings I need to use copper tube instead of a flexible hose Many thks , Thumbs Up

Edit , apologises , found it in the other link , it’s 1/4 NPT


This switches at 0.25 bar, so a bit low really.

1/4 or 1/8 depends on what you want to screw it in to.#
 Joe  
Post #209283916th Oct 2019 1:31 pm
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gstuart
 


Member Since: 21 Oct 2016
Location: kent
Posts: 14108

United Kingdom 2005 Discovery 3 TDV6 Base 7 Seat Auto Java BlackDiscovery 3

Many thks

It will be to replace the original one , Thumbs Up

Was the the one plse , apologises being a pain

https://www.advancedfactors.co.uk/lr000633...6818-p.asp

Many thks

Ps, also looking the one that’s fitted on mine that is 0.3 bar
   
Post #209284516th Oct 2019 1:46 pm
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OvalAutos
 


Member Since: 28 Dec 2018
Location: Cradley Heath
Posts: 382

United Kingdom 

Looks right to me.
 Joe  
Post #209286516th Oct 2019 3:08 pm
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gstuart
 


Member Since: 21 Oct 2016
Location: kent
Posts: 14108

United Kingdom 2005 Discovery 3 TDV6 Base 7 Seat Auto Java BlackDiscovery 3

Bless u, thks so much and always so appreciated Bow down Thumbs Up

At least having an external oil pressure gauge can set the alarm to around 0.8bar
   
Post #209288016th Oct 2019 4:11 pm
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KostasA
 


Member Since: 23 Aug 2015
Location: nairobi
Posts: 286

Greece 

i have installed an oil gauge to my disco.

cold start at idle i have 2-2.5 bar and while driving it goes to 3 bar or so.

when warm (temperature gauge in middle) pressure is almost 1 bar and doesn't go up while driving revving. is that normal???

some pictures of the whole venture:


Click image to enlarge




Click image to enlarge
  
Post #210124922nd Nov 2019 9:18 am
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Pete K
 


Member Since: 15 Jan 2016
Location: GL
Posts: 10673

England 2005 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

that sounds low.

Are the gauge and sensor matched (i.e made by the same people) and purchased together ?

I would expect 5 bar on a cold start

there is a link to my readings somewhere in this thread
  
Post #210128722nd Nov 2019 1:06 pm
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