Holley 12-841 4.5-9 PSI Adjustable Bypass Billet Fuel Pressure Regulator with 3/8" NTP Ports
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Yep, that's correct. This is exactly how I intend to use it
YES, as long as the principle is the same, even if I use an electrical pump. With the Holley FPR, you will be able to regulate your pressure, while the return line port will be able to regulate your pump pulses. Although I am unsure of how many PSI this mechanical pump generates. In the case of a low-psi pump, you might not be able to make full use of the return line. It's a pity.
Both of these can be used interchangeably. It is not necessary for the return line to be plumbed incorrectly and the pressure should be set properly if the horizontal ports are properly plumbed and properly set.
Selected User Reviews For Holley 12-841 4.5-9 PSI Adjustable Bypass Billet Fuel Pressure Regulator with 3/8" NTP Ports
There are many things to like about this product, so I hope it serves its purpose The purpose of this regulator is to help lower the fuel pressure from an EFI to carb swap since the fuel pump in the tank is a high flow pump that would flood the carburetor without it. I am updating Well, this is sort of upsetting since I spoke directly with Holley about my requirements over the phone. My specification stated that I wanted to keep the stock high pressure pump in the tank, as well as the type of regulator I should use. My phone caller told me that the 12-hour period is over There was only one that I needed, and that was 841. My readings of the incoming fuel pressure were wrong after I installed the gauge, so I re-installed it For this message to be delivered via email, I contacted Holley. Greetings from Holley Performance Products. I appreciate your inquiry. This 12-month period will end on December 12 Input pressures of less than 40 mbar are accommodated in the 841. For high pressure, you will need to use a regulator. To use the 12-inch, you need the 12-inch This regulator has a part number of 845. Dear Jeff Teel, Thanks for your interest in the company. This will change a lot for us. Approximately $100 in a big way, and I am the only one who is not part of it. It is usually my habit to do a lot of research on things, and I believe I did my homework properly by contacting Holley. In fact, the regulator only had to knock pressure down from about 40psi to around 7psi, and I was using a fuel return line, so it would work as needed, but apparently someone at the manufacturer gave me bad information. I give up.
A fuel line used for an outboard motor is connected to this to regulate the pressure. The pump I'm using is mounted in the tank and I wanted to keep the pressure at the lowest possible level in order to keep the motor's fuel pump The springs of my regulator will sit at 2, so I assume there is a slight variance in the springs. On its lowest setting, I get 5 psi of pressure, which is ideal.
When you consider its price, you would expect that it would be useful. No matter where you changed the screw, there was no change in fuel pressure!.
I like the look of this part. It appears to be a professional site with a clean appearance. The factory set it to 5 pounds, and I found that to be about right on my 350 Chevy. The only time I run out of gas at full throttle is when I'm in the middle of a race. Instantly adjusts fuel consumption to meet the needs of the engine!.
Although I have not installed it, it looks to be a quality product from Holley.
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