best engine bay place for a fuel pressure gauge

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diymirage

diymirage

HP@idle > hondaHP@redline
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one of these days im gonna install the return line on the fuel system

when i do, i might move the fuel pressure gauge from the fuel log to a port on the regulator
since the regulator will be mounted in the inner fender i thought i might get a better reading there then on the fuel log

does that make sence?
 
I have been pondering location of regulator as well. Do i point log back to the fire wall or forward towards front? Keeping in mind heat is the enemy. Towards the front i complete with space with ac hoses, the rear may be holding more heat? Can the regulator be laid on its back?

Thanks FABO!

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Those regulators don't care what position they are in. Sideways, upside-down, horizontal, vertical... does not matter. (But don't put it on the firewall.)
 
I had a feeling yesterday when I made the bracket and self tapped it into the fire wall that I was rushing the install. The firewall was working out sweet too.....guess Ill make a plate to cover and put it towards the front.

thanks FABO!
 
But!!!!!!!

If anyone has handy pics of the location they chose... I'm still interested.

Thanks FABO!
 
Thanks, I don't track any of these so I am not too worried about that. I like it where I can see it when working on the engine. This is my Cuda, same thing.
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That location does work for many reasons. Thank you for sharing. Clean cars!
 
My regulator is on the frame rail next to the tank, one line up to engine.
Gauge is on the throttle body staring at me.
Not the greatest pic.

Might get a better reading if it was on the line before the tb, they make fittings with a port and I was going to mount it there, but I wanted to see it, and since that was possible I did so.

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Ya, i was reading that for cars that experience higher G forces, from launching and what not, can have fluctuations in the pressure as a result of the regulator being so far from the point of use. Might be false info, still reading, might not want to use that as a "final answer" with Alex Trebeck.:lol::lol::lol: i like your ideas about separating the gauge from regulator.....hmmmmm.....
 
Interesting.
Just spit balling here, but wouldn't an old school mechanical fuel pump that has been used since the dawn of man be more susceptible to the fuel draining back, than an electric pump failing to pump fuel forward?
Obviously there is a big difference in the amount of pressure between the two, but the regulator just regulates, the pump is always running high. Plus, any good efi tank has a baffle or catch area, whatever it's called.
Once again, never did any research on this topic, just interesting.
 
Yeah, I'm visualizing a garden hose running and if the valve is the regulator ... and there is an anomily such as movement, is the water more affected further away from the valve? Is the water more stable closer to the valve? Dunno, could be....ill snoop around to find the article i was looking at because believe you/me....i want to run a short return line and keep stuff out of the engine bay.
 
NHRA, IHRA don't allow regulators on the firewalls of cars. Just saying.
 
So if i used an isolator, and mounted the regulator on the subframe connector about the passenger door hinge latitude, would that be too far away?

Really, im just gonna mount it on inner fender or just outside radiator with a heat shield and be done with it.

Thanks for all your advice. I'm still listening, but i will pull the trigger as soon as i get more AN fittings
 
clementine said:
So if i used an isolator, and mounted the regulator on the subframe connector about the passenger door hinge latitude, would that be too far away?

Really, im just gonna mount it on inner fender or just outside radiator with a heat shield and be done with it.

Thanks for all your advice. I'm still listening, but i will pull the trigger as soon as i get more AN fittings
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The issue with mounting it on the fender is you can’t see it.
The issue with mounting it in the cab is you have to use the isolater because a fractured pressure line with fuel in it blowing all over the cab is a huge fire hazard.

Fuel pressure at idle is important, but so it fuel pressure at a cruise and WOT. Of course of you are data logging your fuel pressure then mounting it in the engine bay is fine.
 
The sniper will have AFR .... and i have run isolator with some success in the past, some kind of 50/50 antifreeze mixture, so ill have to think about it. Maybe on the hood outside the windshield..... old school
 
I always have the regulator on the passenger inner fender, with a pair of braided lines to the bowls, so i can get the bowls off for a jet change easily. On one car, with a 140 gallon pump, i have a gauge on the fuel bowl (inlet on the pass side, gauge on the driver side) for under the hood monitoring, and an isolator with a gauge inside the car, for monitoring down track.
The other car has a gauge on the regulator, for under hood, and a 250gph mallory that i dont have to monitor in the car.
If i were doing it over, i might try to mount the regulator forward in the car ahead of the carb, so g-forces help feed the carb, instead of stopping fuel flow.
 
I take it that you want to move it from the fuel rail but mine is there and its a liquid filled gauge and don't studder a bit.

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