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05-12-2009, 04:42 PM | #1 |
Drives: None. Join Date: Feb 2009
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Fuel Pressure Regulators and setting meters?
I just trying to learn a little more about fuel systems, but i have an idea what the regulator does. What is the point of the "setting meter" other than showing the fuel pressure?
http://www.more-japan.com/product.ph...cat=539&page=1 In this case, let's talk about SARD Fuel pressure regulators and their "setting" guage. Someone explain this part of fuel systems to me. Thank you. |
05-12-2009, 06:43 PM | #2 |
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The gauge shows the pressure visually so you can make adjustments quickly, without having to read it from management software, etc.
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05-14-2009, 01:43 PM | #3 |
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Will this work only for the Sard FPR or others as well?
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05-14-2009, 02:10 PM | #4 |
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im assuming its universal and you can tap it in anywhere....
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05-14-2009, 02:39 PM | #5 |
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A gauge is a gauge, as long as the fittings work. We ended up putting my gauge at the end of the fuel rail - no need for a line or a bracket that way.
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05-14-2009, 02:56 PM | #6 |
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The gauge shown appears to be the one used to set the fuel pressure on the dyno while tuning and not one you'd have installed constantly (or be able to view constantly since it's in the engine bay).
a standard (electronic) gauge has a sensor attached to a sending unit which then sends the data into the gauge in the cabin. so yes there is a difference between a standard electronic fuel pressure gauge and the "setting" fuel pressure gauge. |
05-14-2009, 04:53 PM | #7 |
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I have a regulator (which sets the pressure) and a liquid-filled gauge off the fuel rail, in the engine bay. I'm assuming it's a mechanical gauge.
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05-14-2009, 04:59 PM | #8 | |
l33t3st Asshole
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Quote:
simply for setting the fuel pressure, not for monitoring fuel pressure. |
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05-14-2009, 05:04 PM | #9 |
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well, if you sat on the valve cover and leaned way over, mayyyybeeeee you could watch it
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05-14-2009, 05:13 PM | #10 | |
l33t3st Asshole
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Quote:
what's the point if you can't see it? |
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05-15-2009, 12:24 AM | #11 |
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Here's my set up:
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05-15-2009, 12:42 AM | #12 |
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Garm, what pressure are you setting your system to at idle? Is your regulator boost compensating?
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05-15-2009, 09:33 AM | #13 |
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No, it's a fixed pressure. It's the injectors job to squirt the correct amount of fuel. We have it at 40 right now, but if the injectors max out we may end up with a higher pressure. Not done tuning yet!
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05-15-2009, 09:44 AM | #14 |
Drives: Yaris LB Turbo Join Date: Aug 2006
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Our cars use what called a "returnless fuel system". The regulator is in the fuel tank, not on the fuel rail. It is not adjustable. You would have to convert to a "return" fuel system to be able to adjust your fuel pressure. Unless you are running a S/C or turbo you fuel pressure does not have to be adjusted, even with all the bolts on's available for our cars.
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05-15-2009, 09:47 AM | #15 |
Drives: Yaris LB Turbo Join Date: Aug 2006
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Your fuel pressure should not be fixed. It should be 40psi at idle & go up to 50-60psi depending on the boost you run. The regulator is a 1:1. If your pressure stays at 40psi at all RPM range then there is something wrong.
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05-15-2009, 10:01 AM | #16 | |
l33t3st Asshole
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Quote:
might as well gut the car, ligthen the wiring, and re do the ENTIRE fuel system while you're at it.... research time. |
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05-15-2009, 10:20 AM | #17 |
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converting to a returnless system is common modification on the SRT4 for example. This mod for the SRT4 makes 30-35 more hp. I dont know what your comment about "gutting the car" & "ligthen the wiring" means, converting to a return system does involve " re doing the Entire fuel system" I dont need any "reseach time" Iv done this many times. I can send you a details if you want
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05-15-2009, 10:22 AM | #18 | |
l33t3st Asshole
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Quote:
reason I said the other two things, is I'd like to do those at the same time. |
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