Fuel pressure gauge
Racer
Joined: May 2006
Posts: 293
Likes: 0
Pressure is pressure. As long as you don't tell the gauge, it'll never know the difference. Of course the sending unit must be compatible with the alternative meduim and the range of the gauge should be appropriate for the job at hand. Go for it!
Le Mans Master
Joined: Sep 2006
Posts: 6,050
Likes: 147
From: Phoenix AZ
2021 C4 of the Year - Modified Finalist
what you want, is the needle to ride in the middle of the gauge during normal operation, because the gauge is much more accurate in the middle of the gauge range.
when using a oil gauge for fuel, you need to use an isolator to keep fuel out of the people area for obvious fire precautions.
If the gauge comes with a sender, no isolator is needed, but the fuel system integrity needs to be maintained.
Burning Brakes
Joined: Oct 2006
Posts: 834
Likes: 0
but that diff could be due to the 50 oil gage being a mechanical direct reading unit vice the 200 is an electronic with remote sending unit. You could use a mechanical press gage for fuel if you have a fluid seperator in the line although these aren't cheap and are a pain in the a$$ to get all the air bubles out of. All things considered I would just go with a electronic sending unit for saftey.
Le Mans Master
Joined: Mar 2004
Posts: 8,700
Likes: 298
From: Ft. Lauderdale Fl
Take a look at www.summitracing.com They have over 100 of them priced from $16.96 and going up to $199.95 Some are mechanical and some are electrical. Take a look.
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Melting Slicks
Joined: Oct 2001
Posts: 2,315
Likes: 110
From: Brandon Fl
but that diff could be due to the 50 oil gage being a mechanical direct reading unit vice the 200 is an electronic with remote sending unit. You could use a mechanical press gage for fuel if you have a fluid seperator in the line although these aren't cheap and are a pain in the a$$ to get all the air bubles out of. All things considered I would just go with a electronic sending unit for saftey.
Burning Brakes
Joined: Nov 2005
Posts: 848
Likes: 1
From: 1992 LT1 6 speed Cayman Islands
The simple answer is YES. Preassure is preassure and the guage does not know the difference. If it is an electronic guage with an electronic sender all you need to do is use the correct sender for the guage.
Safety Car
Joined: Apr 2001
Posts: 3,525
Likes: 2
From: Houston TX
You will need to use the fuel psi guage with the electronic convertor. Basically, the systems that are available will connect the convertor to the schraeder valve area on the factory fuel rail. Unfortunately, there is not enough room to put the fairly large convertor onto the fuel rail on a TPI or SR car, so you will need an adapter that connects a -3AN line between the fuel rail and the convertor. Then you can bring the electrical signal from the convertor into the inside of the car for the guage. Typically, there is a module that powers the guage and the convertor.
My module is mounted behind the breadbox in my '87, with the FP guage on the driver's A-pillar.
Aaron
Team Owner
Joined: May 2002
Posts: 24,337
Likes: 25
From: San Diego , CA Double Yellow DirtBags 1985..Z51..6-speed
Regarding the mechanical guages mentioned, avoid the cheap ones, don't use them for permanent mounting. Accel is one example.
They use brass gears and will strip out from fuel pressure pulsations. I went through two of them in two years.
For a mechanical guage, use either a glycerin filled guage, or a guage isolator.
They use brass gears and will strip out from fuel pressure pulsations. I went through two of them in two years.
For a mechanical guage, use either a glycerin filled guage, or a guage isolator.