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12V gauges

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Old Feb 6, 2007 | 08:15 AM
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From: Greensboro, NC
12V gauges

Time to gauge my 12V...pyro, boost, and fuel pressure.

I liked the rainbow ISSPRO pyro I put on my 24V (preturbo), so I'll get the same one. How about boost and FP, 0-60psi? I don't plan on bombing my truck much, but it does already have a fuel plate of some sort.

What's the difference between a fuel pressure gauge and boost gauge? Can I just use this water pressure gauge for both applications?
http://www.surpluscenter.com/item.as...atname=engines
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Old Feb 6, 2007 | 10:21 AM
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Any pressure gauge will work for diesel, 60 psi is preferable.
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Old Feb 6, 2007 | 12:15 PM
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Originally Posted by infidel
Any pressure gauge will work for diesel, 60 psi is preferable.
how about the water pressure gauge for boost?
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Old Feb 6, 2007 | 01:06 PM
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Originally Posted by RenegadeT
how about the water pressure gauge for boost?
I don't know for sure, but I don't think it'll work. Water is way more dense than air.
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Old Feb 6, 2007 | 01:08 PM
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boost guage is more sensitive due to air being compresable

I wouldn't use a water press guage for fuel , it probably wasn't designed for fuel and it could start leaking or blow out entirely
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Old Feb 6, 2007 | 01:57 PM
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Originally Posted by Diesel Doc
boost guage is more sensitive due to air being compresable

I wouldn't use a water press guage for fuel , it probably wasn't designed for fuel and it could start leaking or blow out entirely
Yes you can!
These water pressure gauges are Auto Meter Industrial instruments, all metal, made in USA, a lot better quality than most other gauges. They will work fine with diesel, I have them on both of my trucks with no problems. You can ask Infidel, I think he'll tell you he's been using them for years.

However, I'm not sure if they'll work for boost. Just buy one and try it, at $10 a pop you can't go wrong.
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Old Feb 6, 2007 | 02:13 PM
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Originally Posted by DL1221
Yes you can!
However, I'm not sure if they'll work for boost. Just buy one and try it, at $10 a pop you can't go wrong.
Kind of what I was thinking, but being an engineer (and sitting in my cube at work), I started wondering what the actual difference between a pressure gauge for liquid vs. air might be. Sure air is compressable, but what "magic" occurs inside the boost gauge that doesn't happen in a fuel/water gauge.

Just wondering if anyone has tried, I could save $10!
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Old Feb 6, 2007 | 02:44 PM
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I bought two of the Autometer water pressure gauges, one for fuel and another for boost. Weather is too cold to install them, once it warms up I'll put them in and report. Using a simple aluminum bracket to hold them under the dash.
-P
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Old Feb 6, 2007 | 03:10 PM
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Depending on the service for the gauge, there is an orifice installed in the gauges to dampen out pulsations from the source. Most boost gauges have orifices in place so the needle doesn't buzz. If you go and get just any gauge off the shelf, they may buzz and rattle and not function properly.
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Old Feb 6, 2007 | 06:47 PM
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Originally Posted by RenegadeT
how about the water pressure gauge for boost?
A gauge is gauge.
If you were to buy one that was exclusively designed for one element it would cost you a fortune. I've used water, oil and air pressure gauges for all different applications from what it says on the face with no problems whatsoever.
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Old Feb 7, 2007 | 01:04 AM
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a guage is pointless if it isn't acurate sure it may read and go up and down and look cool doing it but if it is off 10% from actual it is junk. a friend of mine has a ford thet he swapped a cummins into with guages he got from who knos where and the boost guage jumps around so much you cant even read it. It is total user prefference, a true boost guage from auto meter is only 35 bucks and the movement is fluid not jumpy.
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Old Feb 7, 2007 | 01:08 AM
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Originally Posted by DL1221
Yes you can!
These water pressure gauges are Auto Meter Industrial instruments, all metal, made in USA, a lot better quality than most other gauges. They will work fine with diesel, I have them on both of my trucks with no problems. You can ask Infidel, I think he'll tell you he's been using them for years.

However, I'm not sure if they'll work for boost. Just buy one and try it, at $10 a pop you can't go wrong.

Sorry to get you so worked up, I don't know what I said, just that I wouldn't trust a guage designed for water to hold diesel. I don't know how each brand of guage is sealed or if they will withstand diesel I'm glad they have worked for you I myself usa a specific fuel guage but that's me, to each his own.
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Old Feb 7, 2007 | 08:57 AM
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Originally Posted by Diesel Doc
Sorry to get you so worked up, I don't know what I said, just that I wouldn't trust a guage designed for water to hold diesel. I don't know how each brand of guage is sealed or if they will withstand diesel I'm glad they have worked for you I myself usa a specific fuel guage but that's me, to each his own.
No, on the contrary, I apologize if I seemed worked up, I really wasn't. I guess I should have left out the exclamation mark.
I believe this site is all about making friends. . .
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Old Feb 7, 2007 | 11:44 AM
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Originally Posted by infidel
A gauge is gauge.
If you were to buy one that was exclusively designed for one element it would cost you a fortune. I've used water, oil and air pressure gauges for all different applications from what it says on the face with no problems whatsoever.
I'll disagree and leave it at that.. Not all gauges are created equal.
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Old Feb 7, 2007 | 12:25 PM
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One thing that's certain-
If you buy an Autometer Industrial gauge for $9.95 and it doesn't work for the application it says on the face you're not out very much money.
I guarantee 100% it will work just fine though.

Most gauges are labeled by their pressure followed by WOG, which means water, oil or gas.
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