can i use a mechanical fuel psi gauge in the car

[slacker69]

I was reading that u can use a mechanical fuel psi gauge with a fuel pressure issolator inside the car is this true.

[slacker69]

If this is true this will save me around 50 to 80 bucks on my fuel psi gauge from autometer.

[3.4 slow to go]

most hi-po mechanical fuel pumps only go up to like 9psi, and even tbi fuel pumps themselves are up 15psi. you would be better off getting the proper gauge which will read the highter psi pressure for the port fuelie cars.

[Magnus]

we run at 50psi WOT..

I would NOT run fuel lines inside of the car. Very dangerous and you won't pass tech. Most guys who use mechanical fuel PSI guages mount them on the cowl in front of the windshield.

[slacker69]

what i posted was u use a fuel psi isolator whice stopes the fuel outside the car and builds pressure in a tube and the tube can handle pressure upto 300 psi The high pressure isolator is made by autometer and thats what it is made for is to isolate fuel from being in the cabin. And what was he talking about fuel pump for im lost by what he poster

[Magnus]

How accurate will that setup be?

[nova]

<blockquote>quote:</font><hr>Originally posted by Magnus:
How accurate will that setup be?<hr></blockquote>

Theoretically it should be just as accurate as having straight fuel lines run into the cabin since pressure is transmitted evenly throughout a fluid.

[slacker69]

It is just as accurate if not more accurate cause u are not relying on electronics u are going straight based apon the actual fuel pressure. Its all high quality autometer products

[Magnus]

I would think electronic would be more accurate.

The pressure sensors are calibrated and just relay a signal.

[3.4 slow to go]

disregaurd my previos post, I was a victom of a cerebral flatulation [img]graemlins/dunce.gif[/img]

[slacker69]

with electronic u are relying that you are getting accurate reading based on electronic signals the mechanical ones are based on true fuel psi

[Magnus]

It's an electronic signal. The electrons aren't going to lie to you. My gauge is VERY accurate and VERY fast. It's the sending unit that generates the signal, which I trust. It's no different than a mechanical, just the psi is transfered to an electric signal first.

[Tiago]

<blockquote>quote:</font><hr>Originally posted by Magnus:
It's an electronic signal. The electrons aren't going to lie to you. My gauge is VERY accurate and VERY fast. It's the sending unit that generates the signal, which I trust. It's no different than a mechanical, just the psi is transfered to an electric signal first.<hr></blockquote>

ok, so you just said mechanical and eletric are both just as accurate ;) lol

eletric transfers the mechanical signal into a analog signal, then the gage reads that.

mechical is mechanical, I woudln't think its anymore dangerous then having a mechanical nitrous gage insidee the car as far as the chances of leaking are.

but that idae souds really good Kris, IM me alink of that thing when you get a chance.

much cheaper! :D

[nova]

<blockquote>quote:</font><hr>Originally posted by Magnus:
It's an electronic signal. The electrons aren't going to lie to you. My gauge is VERY accurate and VERY fast. It's the sending unit that generates the signal, which I trust. It's no different than a mechanical, just the psi is transfered to an electric signal first.<hr></blockquote>

Electrons can lie somewhat. At the flight lab where I work much of our aircraft instrumentation utlizes electronic transducers and we still have to develop a calibration curve based on a known source to make sure that we get accurate readings. The electronics also have a "drift" to them so they have to be recalibrated on a regular basis. The longer you go without a calibration the farther off they get.