dead head fuel setup
Thread Starter
Racer
Joined: Mar 2016
Posts: 255
Likes: 8
From: Cedar Rapids Iowa
dead head fuel setup
Hey has anyone ever ran a fuel dead head system like the one in this picture?
I have a racetronix 255 in tank and an external aem 400 that I want to run in paralell and I was wondering if it was possible with this setup. Going in an 01 base with a p1sc. I was hoping to use stock rails.
http://i321.photobucket.com/albums/n...ps62c51e7d.jpg
I have a racetronix 255 in tank and an external aem 400 that I want to run in paralell and I was wondering if it was possible with this setup. Going in an 01 base with a p1sc. I was hoping to use stock rails.
http://i321.photobucket.com/albums/n...ps62c51e7d.jpg
Last edited by AtlasInTheGym; Dec 13, 2016 at 11:40 PM. Reason: Add info
Melting Slicks
Joined: Jul 2008
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From: Houston Texas
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The problem with the dead head system drawing shown is any drop in pressure after the regulator will not be compensated for by the regulator.
58 psi upstream of the regulator does not guarantee 58 psi downstream of the regulator.
It can work, but it depends on how much power you plan to make and how far the regulator is from the rails.
58 psi upstream of the regulator does not guarantee 58 psi downstream of the regulator.
It can work, but it depends on how much power you plan to make and how far the regulator is from the rails.
Last edited by Turbo-Geist; Dec 14, 2016 at 12:38 PM.
Racer
Joined: Nov 2013
Posts: 254
Likes: 6
From: Houston Texas
My cars fuel system is deadheaded. A well reputed member here is the one who help me design it. Knowing him, I can't imagine he'd steer anyone wrong. The mindset was hydraulics is hydraulics, regardless of location.
Another nice aspect is it keeps the fpr out of the engine bay, keeping it cooler. Also, any fuel that makes it to the rails, gets burned. This helps with keeping fuel temps lower since you're not circuilating fuel under the hood, through the rails, back to the tank.
So far it's been good to me. Hasn't been on the Dyno yet, but I have ever intention of pushing the F1R to near its limits.
Another nice aspect is it keeps the fpr out of the engine bay, keeping it cooler. Also, any fuel that makes it to the rails, gets burned. This helps with keeping fuel temps lower since you're not circuilating fuel under the hood, through the rails, back to the tank.
So far it's been good to me. Hasn't been on the Dyno yet, but I have ever intention of pushing the F1R to near its limits.
Melting Slicks
Joined: Jul 2008
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From: Houston Texas
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Racer
Joined: Nov 2013
Posts: 254
Likes: 6
From: Houston Texas
I can't speak for all regulators, but I know my Magnafuel has no restrictions and is a straight shot between inlet and outlet. The diaphragm and spring meter what goes to the return.
By principle, it's not possible to have (for extreme example) 40psi at the injectors and 58psi at the regulator inlet. Or at least, that's what that Pascal guy said once.
Thread Starter
Racer
Joined: Mar 2016
Posts: 255
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From: Cedar Rapids Iowa
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Racer
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From: Cedar Rapids Iowa
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my secondary is set up this way and probably very similar to stuntheavy's and the guy who helped him is probably the same guy who helped me
... I have my regulator hidden out of the bay before the rails and my base pressure was lowered to 46psi... it has not given me an issue at all since I've had it set up this way, no fuel overheating, pump cavitation, nothing... I'm actually about to pull this setup off though and make the switch to e85 with walbro 450s in the tank
... I have my regulator hidden out of the bay before the rails and my base pressure was lowered to 46psi... it has not given me an issue at all since I've had it set up this way, no fuel overheating, pump cavitation, nothing... I'm actually about to pull this setup off though and make the switch to e85 with walbro 450s in the tank
Last edited by StingrayRebel; Dec 14, 2016 at 11:08 PM.
Drifting
Joined: Feb 2002
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From: Oklahoma City OK
Is your fuel system at rest?
Cruising
Joined: Oct 2013
Posts: 11
Likes: 0
My cars fuel system is deadheaded. A well reputed member here is the one who help me design it. Knowing him, I can't imagine he'd steer anyone wrong. The mindset was hydraulics is hydraulics, regardless of location.
Another nice aspect is it keeps the fpr out of the engine bay, keeping it cooler. Also, any fuel that makes it to the rails, gets burned. This helps with keeping fuel temps lower since you're not circuilating fuel under the hood, through the rails, back to the tank.
So far it's been good to me. Hasn't been on the Dyno yet, but I have ever intention of pushing the F1R to near its limits.
Another nice aspect is it keeps the fpr out of the engine bay, keeping it cooler. Also, any fuel that makes it to the rails, gets burned. This helps with keeping fuel temps lower since you're not circuilating fuel under the hood, through the rails, back to the tank.
So far it's been good to me. Hasn't been on the Dyno yet, but I have ever intention of pushing the F1R to near its limits.
Burning Brakes
Joined: May 2011
Posts: 1,216
Likes: 56
From: Houston Texas
I wouldn't call any system with a return, deadheading, regardless of where the regulator is. The reality is whether you have the regulator after the rails or before the rails, there is going to be a pressure differential locally in the rails every time an injector opens. Then consider the order in which the injectors are opening and how sequential it isn't as you move down the rail. It just doesn't matter. Put the regulator where you want, set your base fuel pressure, and tune vehicle accordingly.