oil pressure checking guage?

#1
hi there,
I wish to check the actual oil pressure on the V8 engine, I suspect that dash gauge is not correct or possibley the sensor on the engine is a duff one?
Firstly is the sensor the one near the oil filter housing?
I would need to buy a good oil pressure gauge and somehow fit it in place of the engine block gauge to obtain a true reading!
what do I need and how to fix it all up?
Peter
 
#2
Thinking about the last post, I have 2 cars, same year, so the oil pressures senders should be the same, thread 1/2" unf /20 tpi.
I could swap the senders and see if the readings are the same? that would eliminate the possibility of having a dodgy sender on one car?
has anyone done this swap and the result?
Peter
 

quattro

Administrator
Staff member
#3
Hi ButterFingers.

I bought a capillary oil gauge and substituted it for the smaller sender, the one used for the oil light. Then I ran both of them together so I could see the difference.

Richard

Oil Pressure again
 
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#4
hi,
today was a cooler day of below 45 deg c and I ventured into the shed for the first time in 2 weeks. To hot before..........
I had a look at the oil pressure gauge sender on both cars, and find that even if the car is on the hoist, it is almost impossible to access?
I lowered the car to the ground and had a look.
Almost the same, severely restricted access, so this is the question.
Q: is it best to access and remove the oil pressure sender from above or from bellow the car?
my guess is that this is a Harvey Question?
Peter
the reason that I want to do this is to swap pressure sensors to test the oil pressure on "Nelson" , the best of the bunch....

oh , I previously spent the afternoon swapping the oil pressure gauge for a spare one that I had in an instrument cluster...the result was that it did not work at all , no ammeter and no oil gauge, total waste of time but that's the fun of owning an old RollsRover
 
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quattro

Administrator
Staff member
#7
most are not 1/2 inch unf and 20 tpi, so how did you buy a modern one and fit it?
where did you find it?

Peter
I'm fairly certain the gauge came with something like this

s-l1600.jpg

You screw this in and then screw the original sender into the other end. You then have a take off in the middle for your capillary gauge.

All you need to do is find one with the correct threads. Try ebay - Land Rover Series 1 Smiths Oil Pressure Gauge Capillary Hose & Block Adapter Kit | eBay

Rockdemon has mine at the moment; if you ask him nicely, he may take a piccy of it for you :)

Richard
 
#8
hi there,
in trying to find an adapter for attaching a capillary gauge to the oil filter sender , I found this interesting article on NPT threads and what they can fit.
Fuel Product info page
it may be of use to others when sourcing adapters for various fittings on a car.
Peter
 
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