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Discussion Starter · #1 ·
Firstly a big thank you to David @ RSpec for lending me one of his Oil/Water temp senders, which I've cooked ;)

With a bit of testing and the use of the oven :eek: I have a solution using the RSpec sensor with a 220 Ω resistor connected in series. It is a compromise and the resistor was chosen to give "safe" readings up to 125 °C, over that is. . . . expensive

Actual values obtained are (+/- 5%)
Gauge Temp - Actual Temp
80 . . . . . . . . . . 50
90 . . . . . . . . . . 67
100 . . . . . . . . . 79
110 . . . . . . . . . 94
120 . . . . . . . . . 112
125 . . . . . . . . . 125
130 . . . . . . . . . 150

The sensor used is this, note that it has a 1/8in NPT thread and could be mounted in a sandwich plate, oil pump body (with a thread reducer) or a modified sump plug

Resistors will be available from RSpec when I send some :)

HTH

Grant

Testing pics :D
 

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for oil temp and aftermarket sensor you can just adjust the potentiometer on the back of the gauge.......easy:smthumbup
 

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Well done Grant, going by how many people needed these they wiil be quite popular.
 
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