Single Gauge for Rail and Lift pump fuel pressure.

[Dave04]

Anyone use or know where I can get this kinda gauge? I have a triple a pillar. With EGT/Boost, transmission/rear diff, and Lift pump pressure. Like to add a dual gauge to the fuel and keep it at three total gauges.

 

[BarryG]

spa technique makes dual gauges. They do make a dual rail pressure and oil pressure which you could easily repurpose the oil for fuel pressure however the gauge would say oil. I have repurposed some of mine over the years and just put a new label over the ones I have changed so that it says the proper name. They also make a dual pressure gauge that you may be able to use one of the outputs for a fuel rail but unsure on that. Be worth a call to find out. There may be others out there as well but don't know.

 

[Dave04]

I looked at those but how high will the fuel go? 30K? I called and left a message.

 

[JHumphries]

The rail pressure gauges seem to connect to the stock rail pressure sensor.
Theoretically, they all put out a variable voltage, 0-12 Vdc, proportional to the pressure, for example:

0 psi = 0 psi = 0 V
15 psi = 15,000 psi = 6 V
30 psi = 30,000 psi = 12 V

Which means you might be able to put a 2 pole, 2 throw toggle switch between the meter and both pressure senders to use one gauge for both, vice installing a double faced gauge.

 

[BarryG]

Dave:
I don't have a common rail so I have no experience with a rail pressure gauge however on their rail pressure/oil pressure dual gauge I would think the rail pressure side would be able to accommodate the range. The oil pressure side would certainly accommodate the lift pump pressure side with no problem. Just the label would be wrong but as I mentioned I have just used a label maker and relabeled the gauge. On their dual pressure gauge I do not know if the range would be adequate for rail pressure but when they call back they should be able to tell you. I can say their gauges are nice albeit somewhat expensive. I have had mine for over twelve years and 295k and had no sensor failures in that time. I have had some of the backlights go out in that time.

 

[Dave04]

Ok thanks for the info.