Tdi 300 oil preassure

[Chucaro]

I just installed a VDO engine oil preassure on the Defe and I would like to know which are in KPA in normal oil preassure when ideling and at 2000 rpm (+ o -)
The gauge marked 400 kpa when cold and then dropped to 200 when hot at ideling.
The original oil lamp alarm is ok and show normal.

400 kpa = 58.01 PSA
400 kpa = 4 bar

Convertion link HERE (http://www.sensorsone.co.uk/pressure-units-conversion.html)

Cheers

[2stroke]

I fitted a VDO (electric) oil p.gauge to my 300tdi about 4 years ago and that's pretty much exactly my readings, 400-450 cold and after about 80-100 km, it runs at around 200. Idle settles to 100 kpa hot. That's on penrite HPR Diesel (20w60) but is the same on the castrol RX super I previously used. While on the subject of oil pressure mine pumps up pressure within 2-3 sec if it only sits for 3 days but if I leave it longer it takes ages to pump up. I have an oil pump and relief kit to put in, anybody else experienced this?

[SSmith]

i have fitted the EMS 2 that the entertainer on here is selling
same sorta results
3.6 bar cold
1.8 - 2.2 hot idle
1.0 - 1.2 when it really gets hot

id had some initial issues with the wires getting hot and that affecting the readings, low pressure alarm would go off. ive re-routed the wires and had some improvement. gotta get round to getting some heat shielded wires

there is a spare temp sender circuit on the unit that ive been meaning to fit to the engine oil to get a better understanding, just waiting for the next oil change...

no issues with time taken to buld up pressure, will have another look tho

'97 300 tdi disco

[Chucaro]

Your reading is very close to the reading that I have in the Rustic.
I do not have issues with delay in building up preassure.
My heat and water level alarm is the one that dave is selling and I have no problems with the wiring.
Cheers

[SSmith]

i was thinking it was a bit strange for it to fall so much, but then im no expert

might be time to give the oil cooler a good clean. coming up on the 200000 mark.

[Chucaro]

I have a good run today, 160km to Hervey Bay.
The gauge shows 400 kpa when cold and 250 kpa running at normal temperature @ 90 kph on the flat.
Cheers

[2stroke]

Started pulling down my 300 TDI defender today part of the job includes new oil pump rotor and pressure relief piston and spring. Will post up the readings when it's done. I want it reliable for the Simpson trip in September.

[2stroke]

Finally finished the oil pump job, the entire job took a while because I also replaced the lift pump, water pump, oil cooler lines, p.steer lines, all cooling system hoses and header tank as well as the oil pump rotors and relief slug and spring and also the timing belt with idler and tensioner. I've found over the years that these jobs are best tackled at leisure. While I was dirty I pulled off the oil filter head and tested the oil thermostat. The pressure is now 290 to 330 Kpa at anything above idle and idle pressure is 130 to 160 Kpa hot. Cold is much higher and idle was at 420 initially on start up and lifted to 480 driving.

[Chucaro]

Looks good, my VDO only reads up to 400kpa so I cannot telling you if cold go over that.
Which oil are you using and how many kls have your Tdi for you to do all this work?

[2stroke]

Oil is Penrite HPR Diesel, Kms are 213500. I have a Simpson trip planned for September and I'm just going over it. The Oil pump episode is because it took ages to reach pressure if I let it sit for more than 3 days. Probably check the transfer next.

[Chucaro]

213000 km :( I hope that I do not have to touch the engine until 300000 apart of the timing belt every 80000.
Cheers

[2stroke]

Most of what I replaced was still good but I just wanted reliability and spares for fuel/water pumps and hoses and once bought they may as well be on the car. The motor should last for years with that oil pressure.

[2stroke]

Started the old girl this afternoon after 5 full days rest and she gained full pressure within 1 second. Previously it would have been lucky to have made pressure in 1 minute after 3 days rest, I would call this a positive result.

[Chucaro]

Good news mate :twobeers:

[llandro]

2Stroke.
That is interesting that all else being well, no wear generally speaking, there was a problem picking up oil pressure. Up to a minute , as you said.
Hope it is well sorted out now with those replacements.
My own 300tdi, 200k.km. has the oil light go out pretty much instantly even when after sitting for 3-4 months (which it does every year)
Normally when I first start after a "long rest" I stop the engine and then turn ignition on again to see how long it is before the oil light switch comes back on. Usually around 10secs., so I assume the oil pressure is OK?
On 15/40 Mobil, it uses none between changes.
llandro

[Disco_owner]

Chucaro;

any chance you can post a pic of your VDO gauge and show us where you've installed it ?

[2stroke]

The gauge is just a 2" VDO electric gauge and I installed it in place of that useless clock Rover put in the dash. Only problem was I couldn't seem to buy a sender or adaptor to fit the 10mm x 1mm thread for the existing oil pressure switch so I had to make one.

[rick130]

The gauge is just a 2" VDO electric gauge and I installed it in place of that useless clock Rover put in the dash. Only problem was I couldn't seem to buy a sender or adaptor to fit the 10mm x 1mm thread for the existing oil pressure switch so I had to make one.

VDO make a tee that screws into the spot the OE sender sits so you can still use the OE sender and one of their senders on the branch with an 1/8-27 NPT thread.
I'll post up the part numbers tonight. Off to work now.

[Chucaro]

Chucaro;

any chance you can post a pic of your VDO gauge and show us where you've installed it ?

I used the VDO 50mm gauge and adapter to be able to use the original sender plus the VDO sender, so the Defe have the light on the dash as well.

I fitted the gauge on the MUD console, but if you remove the plastic cover where the cigarette lighter and the rear windscreen switch is you will see that on the metal plate behind it there is provision (holes) to mount gauges like in my old 1978 109 LR.

Let me know if you would like to see a photo of the MUD console

Cheers

[2stroke]

Thanks in advance Rick 130 if I can get the adaptor tee I'll reinstate the warning light. From memory I think I silver soldered a 10mm x 1 mm brass fitting from a SEW industrial gearbox to the 1/8 npt socket. Naturally I was a little nervous about the extra leverage of a tee and pressure switch as well as Diesel vibration and corrugated roads.

[Chucaro]

Thanks in advance Rick 130 if I can get the adaptor tee I'll reinstate the warning light. From memory I think I silver soldered a 10mm x 1 mm brass fitting from a SEW industrial gearbox to the 1/8 npt socket. Naturally I was a little nervous about the extra leverage of a tee and pressure switch as well as Diesel vibration and corrugated roads.

You do not need to do any welding if you get the VDO adapter. It is a very simple job at the end of the adapter you screw the onriginal sender and on one side the VDO sender. There is room for both

[Chucaro]

This is Rustic dash setup on a MUD centre console

On the LHS at the top is the 12VDC power outlet running from the main battery
Under it is the DC VDO volt meter monitoring the secnd battery under it is the 12vDC power outlet from the second battery
At the centr4 top is the UHF GME TX3440 speaker and controls and the swithches for lights
On the RHS at the top is the oil preassure gauge under it the manin battery VDO volt meter and uder the controls for the rear wipers.

Cheers

https://www.aulro.com/afvb/images/imported/2010/09/1604.jpg

[Chucaro]

Installation view of a VDO adapter and oil pressure sender on a Tdi 300 engine.

https://www.aulro.com/afvb/images/imported/2009/02/378.jpg

[2stroke]

Thanks Chucaro, don't suppose you know the VDO part#?

[Chucaro]

Thanks Chucaro, don't suppose you know the VDO part#?

I will try to find out tomorrow.
Cheers

[slug_burner]

Taken from lr4x4.com

vdo gauge 300 tdi - LR4x4 - The Land Rover Forum (http://forums.lr4x4.com/index.php'showtopic=14902&view=findpost&p=154025)

300 Tdi:

350-104 2 1/16 80 PSI Elec. engine pressure gauge Vision $25.75

360-006 Pressure Sender: 0-80 PSI/5 Bar - M10x1K - 7.0 PSI $28.37

333-156 2 1/16 4,000 RPM Tachometer Vision $74.81

310-105 2 1/16 250F Elec. engine temp gauge Vision $25.55

323-095 Temperature Sender: 250F/120C - 1/8-27 NPT - $7.31

310-153 2 1/16 250F-1650F Pyrometer (EGT) Vision Marine $153.75

1994 3.9 V8

323-417 Temperature Sender: 250F/120C - M16x1.5 - $18.82

310-105 2 1/16 250F Elec. engine temp gauge Vision $25.55

350-104 2 1/16 80 PSI Elec. engine pressure gauge Vision $25.75

360-009 Pressure Sender, 0-80PSI/5 Bar - 1/8-27 NPT $33.34

5-1/8 F50G-S Adapter Fitting: Parker Hydraulics - $11

All these parts were sourced from eguages.com, which is a US company, so all the readings are psi, fahrenheit, etc. Also, these guages have words like "temp" "pressure" etc, because its a US requirement to have actual words. We're not smart enough for icons. The senders are the really important stuff though, the sizes being the main challenge. I've personally used each of these parts and can vouch for the correcness of the list.

Note that an old oil pressure sender can have the center knocked out and a bung can be welded on to create a cheap adapter.


And this baby comes with a thread that will fit your npt thread.

80PSI Oil Pressure Sender 1/8" NPT
# 360-003

[Chucaro]

This are the details of my setup:

Adapter: VDO 230-033 (10mm x1 )
Sender: VDO 360-001
Gauge: VDO 350-010016

My supplier:
Instrument Service
07 4151 2088
96 Targo St, Bundaberg 4670 Qld

[isuzu110]

Just a follow-up on this thread for those using VDO pressure senders and the brass tee piece to measure oil pressure.

I found i had a poor earth at the sender that was giving me lower pressures than actual. The sender relies on the earth of the connections back to the block.

I ran a hose clamp around the outside of the VDO sender with a wire directly back to the engine block and improved my oil pressure figures.

[wrinklearthur]

The gauge is just a 2" VDO electric gauge and I installed it in place of that useless clock Rover put in the dash. Only problem was I couldn't seem to buy a sender or adaptor to fit the 10mm x 1mm thread for the existing oil pressure switch so I had to make one.
Hi All
I found that the oil switch / gauge adaptor for a VW motor was exactlly what I needed for the 300TDi.
Cheers Arthur