RickRick
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| posted on 2/1/09 at 10:07 PM |
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Mechanical oil temp gauge
ok i give in I have no idea how they work, there's just one wire type connection, shielded by a spring type thing
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fazerruss
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| posted on 2/1/09 at 10:12 PM |
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as far as i know the wire and thermo couple is full of wax which expands as it heats up which then mechanically moves the needle
"if assholes could fly this place would be an airport"
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prawnabie
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| posted on 2/1/09 at 11:13 PM |
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Thats not a wire! Its a capillary tube.
There is a take off where the oil pressure sensor would be on the engine and a tube is fed from there into the back of the gauge which contains the
sensor.
Now becoming a period accessory!
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blakep82
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| posted on 3/1/09 at 12:25 AM |
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but wouldn't the oil be a lot cooler by the time it gets to the gauge? and its just a single tube to the gauge isn't it? so there
can't be any flow round it... hmmm
?
________________________
IVA manual link http://www.businesslink.gov.uk/bdotg/action/detail?type=RESOURCES&itemId=1081997083
don't write OT on a new thread title, you're creating the topic, everything you write is very much ON topic!
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rusty nuts
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| posted on 3/1/09 at 10:21 AM |
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It works on pressure IIRC as the gas/liquid inside the bulb (sensor end) gets hot it expands and moves the dial?
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coozer
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| posted on 3/1/09 at 11:16 AM |
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I have a Racetech one on my zetec, I'm sure its the oil pressure pushing against a spring and the deflection shows on the gauge. Its
instantaneous when the engine starts so no heating of bulbs or anything i can see.
1972 V8 Jago
1980 Z750
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blakep82
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| posted on 3/1/09 at 11:27 AM |
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wouldn't the temp vary with oil pressure then? or is it taken from somewhere with where its not pressureised? like in the sump?
________________________
IVA manual link http://www.businesslink.gov.uk/bdotg/action/detail?type=RESOURCES&itemId=1081997083
don't write OT on a new thread title, you're creating the topic, everything you write is very much ON topic!
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RickRick
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| posted on 3/1/09 at 04:39 PM |
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either way it didn't work so i cut the wire/tube thing and ripped it out, just couldn't work it out, the sender part is quite a big ish
thing, and it's in a non pressureised area, and when i cut the wire thing right at the sensor oil didn't get out
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rusty nuts
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| posted on 3/1/09 at 04:56 PM |
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No chance of it working now !
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