92smokin blacky

How big of a fuel pressure gauge do i need? 0-30psi? I want an isspro one to match my other gauges. Should i buy a whole kit? or just buy the gauge and buy the plumbing seperate? where have you guys found the best deal on them? thanks!

peobryant

If you're staying with the VE, a 30psi gauge is best.

I've ordered all my Isspro gauges from www.genosgarage.com and have been extremely satisfied with their service.

92smokin blacky

okay thanks, I plan on stayin VE so i think the 30psi gauge will do just fine.

I've read on some that your not supposed to run the fuel press gauges in the cab??? I've seen on some trucks where they are mounted outside, just on the hood so you can see it through the windshield, but i wanna mount mine in the cab, is it okay if i mount it in the cab or do i have to do somethin different to do that?

dillenger1

thats up to you

sdseva

i believe they do that because of the risk of fumes in the cab? someone smarter will chime in on that. i know that an isolator is pretty standard of fuel gauges if installed in the cab, but i was also wondering if that was necessary for diesel fuel gauges since the fumes are less flammable? i have fuel gauge but its not hooked up yet because i dont have the line to the gauge and was wondering about the isolator situation.

JustRamIt91

I'll saw what no one else will... its not very smart to run fuel lines into your cab, esp when there is no need to... Its a common scene thing. Leaks onto circuit board, sparks, fire between your legs... you get the idea.
Get an electric pressure gauge if you want some reading in the cab, i'm sure you can find something but they are probably expensive though.

dillenger1

im running 1 in the cab with some viton rubber line.

921stgen

I ran mine into the cab, but I sleeved it with some heavy duty plastic hose all the way up to the gauge with some stuff that is for the machines at Honda. Got it when I worked on the heating at a business that supplied stuff for Honda.

wannadiesel

I'm one of the not very smart people with a mechanical fuel gauge in the cab.

It's diesel fuel, not gasoline.

Jim Lane

Gasoline is much more volatile than diesel fuel and I would not place it the passenger compartment, on all of my cars and trucks I have mounted the fuel pressure gauge on the cowling facing the windshield using a Stuart Warner marine grade gauge in a marine mount like used on racing boats.

Diesel fuel is a lot harder to ignite than gasoline (think Ignition/ Compression) and will actually put out a match if drips onto it although I still think it is perfectly safe inside your cab as long as you have some way to manually turn it off at the engine incase it develops a leak, your needle valve would serve this purpose.

You could also use an Isolator that isolates the diesel fuel from the inside of the cab through either a floating piston or a diaphragm and uses antifreeze as the transmitting medium but these are rather expensive.

Also don’t use the cheap poly tubing that comes with the gauge, you could use copper tubing but this can transmit annoying vibrations from the slightest pulsations from the fuel pump inside to the gauge, I always use 1/8” nylon Nyflex Air Brake line, it is used on places like the air shift switch on the shifter of a Roadranger and is very strong. And I pass it through another section of 3/16” Nyflex where it passes through the bulkhead to protect it.

Also most racing sanctions will have regulations as to where and how they may be installed, I know NHRA does.

Jim

blackfordd

Very cool. Thanks Jim.

Trebor

And I'm old enough to have owned not less than two gasoline powered trucks that had the 18 - 20 gallon gasoline tank mounted inside the cab BEHIND the seat!

92smokin blacky

I found a mechanical gauge for like $45 and the electric one was about $125.

I think i'll just go with a mechanical int the cab and make sure all the connections are good and probably put another type of tube over the fuel line so it won't leak.

Do you guys with the gauge in the cab ever have diesel fumes in the cab? or smell of diesel? or do you have it sealed good enough where its not a problem?

Alec

Well, I imagined my wife (actually, she was my girlfriend at the time) sitting next to me and saying, "Honey, what's that smell?" as diesel fuel dribbled down over the dash into her purse while I'm in the passing lane on the interstate . . . so, I ponied up for the isolator from summit racing. I used silicone brake fluid on the gauge side, and an ISSPRO EV 30lb gauge, FWIW.

cell

I used stainless steel braided teflon lined hose for my install.