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Extending a Mechanical Oil Temperature Gauge
Posted by: keitho64 ()
Date: January 16, 2013 08:25PM

I have an old Stewart Warner mechanical oil temperature gauge. The lead for the sending unit is a hard wire /cable but is too short since this is designed for a front engine car.

Do any of you know if there is a way to splice in an ‘extension’ so I could run the gauge all the way to the dash? The connector / cable looks the same as a mechanical water temperature gauge.

Thanks

Keith
64 Monza Convert
00 911 C2
"Horizontally Opposed"
05 GTO 6-speed (Gotta have a V8)
Chicago Burbs; the Anti-Dragon... 11 turns in 318 miles

Re: Extending a Mechanical Oil Temperature Gauge
Posted by: cnicol ()
Date: January 16, 2013 08:31PM

Since it's a pressure gauge, the tube can be extended fairly easily. Tubing and fittings are available at "real" auto parts stores. Just get an oil pressure installation "kit" or nylon tubing and compression fittings and make a kit yourself. I think it's 1/8" O.D. Tubing.

Craig N. Coeur d'Alene ID.
66 Black Monza 4dr, 4.2L V8 49k
61 Seamist Jade Rampside 140 PG
65 Canadian Monza 4dr 110/PG 40k
66 Sprint Corsa convt - First car! Re-purchased 43 years later
2+2 gnatsuM 5691

+17 Tons of parts

Re: Extending a Mechanical Oil Temperature Gauge
Posted by: keitho64 ()
Date: January 16, 2013 08:48PM

Craig, it is a temperature gauge, not pressure. I am not sure how or what is inside the tube.

Keith
64 Monza Convert
00 911 C2
"Horizontally Opposed"
05 GTO 6-speed (Gotta have a V8)
Chicago Burbs; the Anti-Dragon... 11 turns in 318 miles

Re: Extending a Mechanical Oil Temperature Gauge
Posted by: cnicol ()
Date: January 16, 2013 08:52PM

Oops, misread. Extending the capillary tube in a temperature gauge is not practical. It's filled with a liquid at a calibrated pressure. The only way to extend one is to send it back to the maker for a custom capillary tube. The custom tube cost would likely exceed the cost of a new, electric gauge by quite a bit.

Craig N. Coeur d'Alene ID.
66 Black Monza 4dr, 4.2L V8 49k
61 Seamist Jade Rampside 140 PG
65 Canadian Monza 4dr 110/PG 40k
66 Sprint Corsa convt - First car! Re-purchased 43 years later
2+2 gnatsuM 5691

+17 Tons of parts

Re: Extending a Mechanical Oil Temperature Gauge
Posted by: Ratt643 ()
Date: January 16, 2013 08:54PM

The tube is known as a "bourdon tube". It is filled with a gel or wax that causes the gauge to read. The only way to make it work is to run an oil line from the rear of the car to the front, install the sender, and return the line to the engine. the oil has to pas across the sender or it wont read correctly. Best bet is to find an electric gauge that is close to your mechanical gauge.

1964 Monza Coupe
1965 Corsa 140
1967 Monza Coupe

Maryville, TN
U.S. 129 The"Tail Of The Dragon"

Re: Extending a Mechanical Oil Temperature Gauge
Posted by: keitho64 ()
Date: January 16, 2013 09:09PM

Thanks everyone appreciate the feedback.

Keith
64 Monza Convert
00 911 C2
"Horizontally Opposed"
05 GTO 6-speed (Gotta have a V8)
Chicago Burbs; the Anti-Dragon... 11 turns in 318 miles

Re: Extending a Mechanical Oil Temperature Gauge
Posted by: steve c goodman ()
Date: January 16, 2013 11:28PM

If you are after the 'look' of the old SW gauges, SW offers a new set of old black face gauges that are electric senders. Temp/press etc are all available.

best wishes, Steve
Rear Engine Spec. Inc. Golden, Colo.

1962 spyder 3.0L turbo---1965 Crown V8
1967 monza 110/4---1968 monza 110/4
1971 amante gt 110/4
CORSA/RMC/PPCC/V8 Registry

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