Temp sensor location poll

[SGKent]

I am only interested in the temperature of the pool. It will be hotter than after the cooler(s) depending on what you have. In a water cooled vehicle the temperature is usually what the head is at, unless you have a Jag and in that case you may be measuring steam because of where the sender is. The temperature in the head is just before it leaves for the cooling system. In a VW that is the pool before the oil is sucked back up and sent thru the cooling system. So that is where I measure it. If the pool gets too hot it is time to add to the pool size (extended sump) or slow down.

In a late T4 the pool temp is higher than an early dual relief case. The reason is that on a late T4 the oil circulates thru the cooler, the excess dumps back into the pump and thru the cooler again. In a dual relief case the excess is dumped back into the pool.
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“Most people don’t know what they’re doing, and a lot of them are really good at it.” - George Carlin

[Dangib]

Ya sadly I don't have type 3 block off and I'm not planning on a external so my 3 bad options are idiot light oil relief or drain plug. what's the least terrible lol

I saw a CSP pic of a billet sump cover and it had the drain plug like recessed up in to protected it from getting crushed but cant find it for sale anywhere.

[madmike]

I have one inline after the oil coolers ,sorry about the filthy Motor ,but mine is 'driven'

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'Black Ice'Drag Buggy 'Turbo'
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76 Drag/Street bug 2180cc 'Turbo' 11:85 @113 mph"If I go any faster I'll burn up the Hamster" ,gets 28 mpg. also 10/09/22 11.90 @115 mph
"If I'm ever on Life Support,UNPLUG Me, Then Plug me back In see if that Works"

[oprn]

[boxer74]

[Dan Ruddock]

I like the idea of two sensors, one very close to the outlet of the pump (sump temp) and one after the cooler right before oil is sent to the mains. I never use an active stock cooler on a performance build. This give more data. You can wire up a toggle switch to select which sensor you want to read. This way you will know if you need more cooler or not.

[ZEKE65]

Type III block off plate mounting.

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1965 VW Sedan, 1968 C10 Step BB, 99 C5

[Tobias Bylund]

What about the sender/sensor, i find that the probe that goes into the line is to large, i would think it would reduce flow too much, has anyone found a 1/8"NPT sender with a thin or short probe?

I want to put my sender in the line that goes back into the case/main oil gallery so that i can see the oil temp that the main bearings see. The engine is EFI and i plan on using oil temp as the input for the warm up enrichment. Oh, and it is dry sumped so putting the sender in the oil tank is possible, but i think that it would be too unprecise and slow to react to changes in oil temp there

[RWK]

Generally the sump is used to get oil temp, as in most other auto and ind. (hydraulics) applications use this also, oil will be hottest just after it leaves the components it just left and cooled, crank, cam, heads. Sump provides a large reservoir with an average temp of all oil, prior to cooling.
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73 Type 181
63 Type 113
63 Type 261- 428 071
62 Type 241-378 025 178 530

[richierich]

Have mine in external filter housing.

[richierich]

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Blah.....

[Zed999]

[Dan Ruddock]

[oprn]

I have two different temp readouts and both of them have dual inputs and can be set to toggle automatically between the two probes.

As far as using the oil temperature as an input for mixture enrichment... my gut feeling is that it may be far too slow. Cylinder head temperature I think would be much quicker and more relevant to the fuel mixture needs of the engine.
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We had the stone age, the bronze age, the industrial age and now we are in the age of mass deception and mind control for corporate profit. (The mass media age)

[Slow 1200]

maybe the oil relief location gives "wrong" temperature for the oil, but I'm more worried about the case overheating and warping than the oil itself to be honest.

[Tobias Bylund]

[Dangib]

[boxer74]

[esde]

A few years ago I did mess around with temp sensor location. I tried the sump, pressure relief, and oil filter locations. My recollection is that the sump read consistently higher than the filter mount. Interesting and unexpected was that the filter sensor is much faster to respond. Put a good load on the engine and the gauge would react 10-20 seconds later. With the sump location, any change in temperature took well over a minute to show on the dial.
The relief plug is an awful position. It's behind the piston so it doesn't get any real flow. Might as well just consider it the "average case temp" sensor.
I've kept it in the filter mount.
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modok wrote:
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[vamram]