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01-29-2014, 06:51 PM | #1 |
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Temperarute gauge!
Hi all!
I have a doubt. Can an electronic gauge being installed in my Ford 1946 12volt??? It is called Dragon gauge. It is from China. It is digital and the electrician told me that the ignition coil interference with the gauge when engine start. Is this true? Do you have any experience with those gauges? It is important for me your comments. Hary
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01-29-2014, 07:18 PM | #2 |
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Re: Temperarute gauge!
Seems like most everything from China is called a "Dragon" something. I've never tried such a thing but if I did, I'd be sure to put that guage somewhere only you can see it!
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01-29-2014, 07:36 PM | #3 |
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Re: Temperarute gauge!
Although they are not the same brand, I am running dual digital temp gages on mine on 12 volts with no problems.
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01-29-2014, 07:46 PM | #4 |
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Re: Temperarute gauge!
Harylufa, Has your car been converted to 12 volt? If not, the gauge would not work.
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01-29-2014, 08:24 PM | #5 |
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Re: Temperarute gauge!
Hi!
Yes my car is 12volts, I have just tested and when I turned the key on the gauge work but when the engine starts it turnes off. I know that my car has a resistor to the dashboard to work with all the original gauges at 6 volts. But the coil is 12volts and the electrician say the gauge does not work because it spark plug interfere like a radio. Sorry but i do not understand much about electricity. thanks for comments and helps Hary
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01-29-2014, 08:55 PM | #6 |
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Re: Temperarute gauge!
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01-29-2014, 08:56 PM | #7 | |
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Re: Temperarute gauge!
Quote:
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01-29-2014, 09:13 PM | #8 | |
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Re: Temperarute gauge!
Quote:
I have an standard two points distributor with 12v coil, it is not electronic ignition system. Concerning spark plug wire it is a wire with many multiple small wires. Engine starts at 12volts. Hary
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01-29-2014, 09:14 PM | #9 |
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Re: Temperarute gauge!
Or, you could install a mechanical gauge that would have no such problems. Here's how I did mine: http://www.fordbarn.com/forum/showthread.php?t=88541
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01-29-2014, 09:18 PM | #10 | |
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Re: Temperarute gauge!
Quote:
Hary
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01-29-2014, 09:24 PM | #11 | |
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Re: Temperarute gauge!
Quote:
Thanks for you post,I have read it all before and someone recommended me to do the same like you to avoid problems. Orlan Rover is an option. But i would like understand why it dos not work... Hary
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01-29-2014, 09:32 PM | #12 | |
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Re: Temperarute gauge!
Quote:
I understand that you don't have an electronic ignition system but the temp. gage is electronic and the R.F.I. (radio frequency int.) from the plug wires may effect the gage the same way. Perhaps as Old Henry says a better option would be a mechanical gage.
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01-29-2014, 09:58 PM | #13 | |
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Re: Temperarute gauge!
Quote:
Ah..ok. it is very clear what you explain. It is the first time I hear that my wires are solid....now, i am understanding the problem. So, as you wrote above "spiral-wound resistor plug wires. Don't know if this will fix your problem, but it's one possibility." So the electrician was right, was he? must I change the spark plug wire??? Here in my Country have Orlan Rober as better gauges. So, i will isntall them. What do you think? Thanks for your good helps Hary
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01-29-2014, 10:16 PM | #14 |
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Re: Temperarute gauge!
It soounds like your car uses 12v for starting, but is otherwise 6v? If so, the gauge isn't going to work.
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01-29-2014, 10:26 PM | #15 | |
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Re: Temperarute gauge!
Quote:
Not saying that changing the wires will solve the problem but it is a direction to go. This is what Spiro-wound wires look like.
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01-29-2014, 10:32 PM | #16 | |
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Re: Temperarute gauge!
Quote:
Only dashboard work in 6v, in this way can work all original gauge. thanks
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01-29-2014, 10:40 PM | #17 | |
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Re: Temperarute gauge!
Quote:
I understand what you say.I am going to install an mechanical Orlan Rober gauge. concerning wires the pic you attach is not like the wire I have. Tomorrow I will attach a spark plug wire pic Thank for your time Hary
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01-30-2014, 02:14 AM | #18 |
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Re: Temperarute gauge!
Hi there, Your copper wire spark plug wires transmit a Radio frequency (RF) through the air just like a radio transmitter station or a two way radio set when your engine is running. This is normal so nothing wrong. Don't change your spark plug wires. Your electronic digital temp gauge is receiving these radio signals from the plug wires (just like a radio receiver in your home) and the gauge internal circuit is interrupted . Don't use that digital gauge anymore. Use the mechanical temp gauge as already suggested OR use a normal 12 volt electric temp gauge which has a pointer on the dial. It operates using a sender unit in your cylinder head with a single sender wire connecting to the gauge. It will work OK as it is ELECTRIC not ELECTRONIC. Hope this is a more clear explanation for you. Regards, Kevin.
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01-30-2014, 07:41 AM | #19 | |
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Re: Temperarute gauge!
Quote:
Ok, very clear...today I bought two mechanical gauge Orlan Rober, I will install them. I really did not know about RF could cause problem with those Electronic Digital Gauge. I bought those gauge to have more precision in temperature. Every day I am learning something thank I meet in FordBarn. I really appreciate your explanation and help. Hary
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01-31-2014, 03:38 PM | #20 |
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Re: Temperarute gauge!
Hi all¡
Finally mechanical temperature gauge installed. What do you think? Hary
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01-31-2014, 03:49 PM | #21 |
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Re: Temperarute gauge!
Looking good. (I probably would have trouble trying to drive and convert temps at the same time--Let's see 78°c=about 172°f )
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01-31-2014, 04:02 PM | #22 | |
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Re: Temperarute gauge!
Quote:
For me is much easier to read in ºC than in ºF now let see what happens with temperature on each head. Thanks for your helps Hary
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01-31-2014, 04:26 PM | #23 |
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Re: Temperarute gauge!
I do know that when trying to use my voltmeter near the engine, the readings are erratic due to interference from the ignition.
It's best not to use resistive wires or caps, it puts too much load on the HT side of the ignition. Purely my experience, your results may vary. Mart. |
01-31-2014, 08:12 PM | #24 |
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Re: Temperarute gauge!
Have you driven with them long enough to warm up the engine and see what they show? I'd be interested to know what you see.
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01-31-2014, 08:30 PM | #25 |
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Re: Temperarute gauge!
I think both heads are reading pretty much the same. Good job!
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02-01-2014, 12:07 AM | #26 | |
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Re: Temperarute gauge!
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Quote:
They read appox. 78° Celsius which is appox. 173° Fahrenheit.
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02-01-2014, 12:54 AM | #27 |
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Re: Temperarute gauge!
Hi Harry, You have done good using two mechanical gauges, that's the best way to go for sure. Stay away from electronic crap on vintage cars. Regards, Kevin.
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02-01-2014, 05:58 PM | #28 | |
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Re: Temperarute gauge!
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Old Henry! I am interested too, i will be back with news Hary
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02-01-2014, 06:01 PM | #29 | |
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Re: Temperarute gauge!
Quote:
Yes, many people told me to install this mechanical gauge. With electronic gauge I pretended to read exactly the temperature but It could not be possible. Hary
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02-03-2014, 03:47 PM | #30 | |
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Re: Temperarute gauge!
Quote:
Here I attach some pics how temp gauge works running for a while. It shows 72º-161Fº. Perhaps a bit low. Other question oil mar les 30 after a while running, Is this normal? Tanks for comments Hary
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02-03-2014, 04:23 PM | #31 | |
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Re: Temperarute gauge!
Quote:
Oil pressure less than 30 after warmed up is normal. The engine is lubricated by oil flow, which you have at any pressure, not oil pressure. It also depends on the oil you use. In the summer when it's always over 60° F engine starting temperature I use S.A.E. 40. It gives a little higher oil pressure. Between 32° F and 60°F starting temperatures S.A.E. 30. We get colder than that in the winter here so I'm trying 20W-50 this winter. Still seems like the pressure is low. But, as I say. I don't think pressure is critical.
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02-03-2014, 10:04 PM | #32 |
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Re: Temperarute gauge!
I'll add to the great info given. Temp is good at removing any moisture in the oil. If your car never reaches a good hot temp, water will remain in the engine. Typically a good running temp is over 180, till it goes to 210, Thats why they say you need to drive them not just idle them in the garage. Flatheads dont need a lot of oil pressue at hot idle, if you hit 20s hot idle you are doing very well on a stock motor.
I good infrared temp sensor is a nice addition to the toolbox too. Many uses, from testing (my interpatation of a quote from bruce lancaster) your ham sandwich , dog, to detecting blocked raditors. . Last edited by Tinker; 02-05-2014 at 09:33 PM. Reason: Credit where credit is due. |
02-03-2014, 10:59 PM | #33 | ||
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Re: Temperarute gauge!
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Quote:
Dear Friends! today my engine has been running during 40 min. So I took pics when I arrived home, I tested with infrared temp sensor too that is according with mechanical gauge. I installed SAE 15w-50 we are in summer now. tomorrow i will run my engine for more time in order to have more info. I will be back with news. Thanks Hary
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