Guage sensor placement

[Flunk]

ok, i searched this, couldnt find much, and google isnt much help on this topic.. 2 pretty easy questions:

1) wheres the best place to bolt in oil pressure sensor?

2) best place to bolt in water temp sensor?

Dont want to go down the sandwich plate road, since ive already got the gear to put in proper stuff, and its only a small job.. just need to know the best part of the system to put them in?

[AE82 FXGT]

Hmm not sure bout the oil pressure sender.

With the water temp you could probably buy a T type connector the screws into the factory place (with the male factory thread and a female factory thread plus a female thread of whatever you sender is).

[Alex B]

I found the oil pressure sensor a bit heavy to be on a brass tee, this is after i reversed out of the driveway, saw a big pool of oil on the ground. Opened the bonnet to find oil pissing out the tee, then the thred snapped off in the head. Happy times, specially in an sw20.

[big_boy]

i T`ed my oil sensour but i made the therd a bit short so the weight was on the face not the therd i think i turned the hole thing out of 1-1/4" hex from memory

[AE82 FXGT]

I was talking about the water temp, they're not that big are they? Assuming it's about the size of a factory one. I know the oil sender is huge though.
Whats wrong with using a sandwich plate? IMO it's a lot safer than messing with the block.

[big_boy]

water temp is fine on a T

me & alex were both talking about the oil temp not being any good on the same set up with just an off the shelf T dew to the weight behind it this is why i made mine in the way i did so there was no actual weight on the therd but on 2 large faces insted

[matt dunn]

water temp is fine on a T

Water temp is NOT fine on a tee.

Sure it wont snap off because of the weight,

but it will also be miles out of accuracy.

The temp sensor must be sticking into the FLOW of water, so as to read accuratly. I had my gauge sender off an adapter, and it always read low compared to the Link ECU display that had it's sensor in the water flow.

After I did a head gasket due to overheating when the gauge said normal,
I placed the same sensor in the flow beside the ECU sensor and now they are always within a few degree's.

If the sensor is to far away from the water flow it measure the brass tee temp which is slow to change compared to the water,
and is partially cooled by the air around it.

Matt

[Flunk]

water temp is fine on a T

If the sensor is to far away from the water flow it measure the brass tee temp which is slow to change compared to the water,
and is partially cooled by the air around it.

Matt

i had figured that much, i just dont know where exactly in the line i should place it, where abouts is it likely to be the hottest? ( that is the best place to take temperature, yes? )

[matt dunn]

i had figured that much, i just dont know where exactly in the line i should place it, where abouts is it likely to be the hottest? ( that is the best place to take temperature, yes? )

As close as posible to the factory location.
MUST be between the engine and the thermostat,
NOT between the thermostat and radiator.

[fivebob]

I've got my water temp sensor in the radiator return pipe, reads within 1°C of the ECU sensor. FWIW the oil temp & pressure sensors are in a sandwich plate and they work just fine.

[Quint]

I found the oil pressure sensor a bit heavy to be on a brass tee, this is after i reversed out of the driveway, saw a big pool of oil on the ground. Opened the bonnet to find oil pissing out the tee, then the thred snapped off in the head. Happy times, specially in an sw20.

Thats exactly the same thing that happened to me O_o! but in a celica not a sw.

[big_boy]

i dident word that to well when i sed water temp is fine on a T i ment a T in the midel of the raditor hose not T`ed off the factory location

also you might find you have a spair plug in just behind you thermastat or arround there witch would be better