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Oil Pressure gauge 300tdi D1

Dogsbreath

Dogsbreath

In Fourth Gear
Has anybody fitted an oil pressure gauge to a D1 300tdi ??

If so, did you go mechanical or electric and where did you take the feed from??

Am looking at going for an electric one and taking a 'T' from the oil pressure warning light sensor above the oil filter.

A couple of years ago I added a gauge to my vectra :eek: and found a blanking plug on the block which the oil pressure sensor fitted straight into and the job was a piece of cake, are there any blanking/spare holes in the tdi block I can tap into??

Any advice welcome :)
 
Oil pressure sensor feed is the way to go. This is the place given by the manufacturer where the oil pressure is to be measured (so you can compare the readings against manuf. values).
The "T" way is the one to go for. Another way is to use an intermediate part between the oil filter and its adapter (from tuning shops). But since you dont need the oil temperature also, it's better not to choose this way (that piece tends to unscrew together with the filter when changing the latter).

If you go the mechanic way, you will need a flexible hose that needs to withstand vibrations (even on extreme cold), heat and pressure resistant, 1-2 feet long. Then the rest could be a pipe leading to the gauge. I would advice against this way since it adds more bits and pieces that are, like any other bit or piece, prone to failure (oil presure drop and spilling).

So go the electric way. Much simpler and a lot safer.
 
The oil pressure switch is 3/8" BSF. The oil pressure sender is (usually) 1/8" NPT. So the T should be a 3/8 one with a 1/8 threaded hole on a side.

Example 1 or Example 2 (down the page - part# 070.027 / the other one is for V8s).

However, better get the oil pressure sender and gauge first and then buy the 'T' piece. This way you can see what thread the sender has and also check if there's enough room for the sender (some senders are bigger in diameter than others, so you'll need to check if the T adapter is long enough).
 
cipx3 said:
The oil pressure switch is 3/8" BSF. The oil pressure sender is (usually) 1/8" NPT. So the T should be a 3/8 one with a 1/8 threaded hole on a side.

Example 1 or Example 2 (down the page - part# 070.027 / the other one is for V8s).

However, better get the oil pressure sender and gauge first and then buy the 'T' piece. This way you can see what thread the sender has and also check if there's enough room for the sender (some senders are bigger in diameter than others, so you'll need to check if the T adapter is long enough).
Click to expand...

Could you please comfirm that the sender thread is BSF.

The tread looks far too fine to me for a BSF however !!! Besides BSF shouldn't be used on a post 1980 ish engine :D
 
Sorry for the late reply. I was thinking you could be right I thought the best way to confirm it was to take the oil switch from my tdi and measure it. I keep my toy some 10 mi away in my father's garage so...

The data I gave, 3/8" BSF, was from a series LR i had and for which i had things wrote somewhere.

For the 300tdi (i believe 200tdi also) the thread is 3/8" UNF

Sorry for that. I deserve some :banging:

I enclosed two pictures. The second one shows the thread being just a little over 1/mm, so there are 24 threads per inch which makes it UNF (BSF is 20 threads/inch)
 

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cipx3 said:
Sorry for the late reply. I was thinking you could be right I thought the best way to confirm it was to take the oil switch from my tdi and measure it. I keep my toy some 10 mi away in my father's garage so...

The data I gave, 3/8" BSF, was from a series LR i had and for which i had things wrote somewhere.

For the 300tdi (i believe 200tdi also) the thread is 3/8" UNF

Sorry for that. I deserve some :banging:

I enclosed two pictures. The second one shows the thread being just a little over 1/mm, so there are 24 threads per inch which makes it UNF (BSF is 20 threads/inch)
Click to expand...
No way.
 
cipx3 said:
Which of the ways is a no way? :)
Click to expand...

It is not an imperial thread.

I've been trying to find out for some time what thread it is. I asked on the Public forum a few weeks ago. Nobody could answer. I've been making enquiries but I need to borrow
A A switch.
B A micrometer.
C A thread gauge.

I am not prepared to state what this thread is until I KNOW. If I fit a switch with the thread you suggest and I blow my enginme because you have given me the wrong information will yoiu
A pay for a new engine
B A car to keep me mobile.

No I thought not.

Please read my original post.
 
Be very carefull could be a pipe thread

Years ago did some work on computer stock records for an Engineering supplier you would not believe how many thread systems there are.

Even now whitworth threads are still been used mainly by China
 
mmgemini, by all means, don't do anything that would blow your gemini! better give it to me while it still works :P
By the way, no need to quote the entire message you respond to, especially if replying right after.

I don't have a thread gauge. If it helps you in any way, the thread is the same like the one used on the bottom of most single handle faucets on the market, where the flexible hose go. I had a used but fairly new faucet laying around and i used one of its hoses to adapt a mechanical gauge to measure the pressure about 2 months ago (2nd picture). It was a perfect fit. I also checked if the oil switch fits the faucet directly and it did.
By the way, this water hoses are not to be used for permanent or long term installation of an oil pressure gauge on any engine! They will not withstand the temperatures involved and the oil will damage them!
 

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cipx3 said:
I don't have a thread gauge. If it helps you in any way, the thread is the same like the one used on the bottom of most single hadle faucets on the market,
Click to expand...

So is that 8mm 10mm 12mm 3/8bsp or 1/4bsp As I have seen all these sizes on taps (faucets) in the UK
By the way Holdens website seems to think it's 3/8 bsf
 
Thread gauges are not expensive, should be owned (but kept clean, not in the botttom of the toolbox) of any one who plays with vehicles. They are invaluable when measuring the thread inside holes, nuts etc.
Also a copy or two (mine are Zeus) of threads etc.
saves "This is a bit tight, I'll keep going, Oh shoot it was the wrong thread"
 
Right :D :D
This is what I know so far.

UK government legistation deemed that ALL new engines had to be metric in 19?? The late 70's or early 80's.

Now that meant that the block had to be metric BUT :eek: the pipe work needn't be. ie block tapped metric with a fitting metric into the block and BSP or whatever the other end.

The other problem is that BSP and NPT and NP are very similar. One is one thread different to the other in TPI.

Now I've rung my parts supplier. At the moment he's not very well and all I could get from him is that the thread is 10mm. No idea of pitch.

Also I've rung an engine/gearbox rebuilder. Again the answer is 10mm. Again no idea of pitch.
So if it's 10mm I would expext the pitch to be 25.4 TPI. Or for the modern folks 1mm pitch.

I've a fair bit on the go this week. It's a hard life being retired :D :D However I'll see if I can get hold of a pressure switch and check the thread.

OR you can all wait until I get my oil pressure switch and get the adaptor made :p

Does anybody fancy getting all the Land Rover engine oil and water temperature fittings sizes and making a table up with them on :rolleyes:
 
redhand said:
Just found this link. It's a link detailing most of the mosts common threads and bolts used on A Landrover, also has a guide to deciphering Land rovers part numbering for nuts Bolts washers etc.

http://www.juracid.demon.co.uk/lr/threads.html
Click to expand...

Good link that but my bonnet spare wheel carrier is deffinatly UNF

Tend to find any thread that has a hole in is a pipe thread but not always so

brake pipes are the worst quite a few different types
 
Sorted :) Took the oil pressure switch to the local parts shop, found a suitable female 'T' piece and a nipple to re-connect to engine block, tapped out the hole for the sensor and Robert's your fathers brother, all bolted in, wired up and working great.

Many thanks for the comments, the words teacup and storm come to mind :)
 
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