Install an Adjustable Fuel Pressure Regulator for Carbureted Engines

Install an Adjustable Fuel Pressure Regulator for Carbureted Engines | Return Fuel System |

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3 жыл бұрын

The Dodge D100 project truck has always been destined for Electronic Fuel Injection (EFI), but a carburetor might be a better bet for the engine break-in period....now I need to get my fuel pressure from about 75 psi down to 7 psi...and this is how I'm doing it!
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Пікірлер: 30

@Sleepyperformance 2 жыл бұрын

Good content man💪

@MoonBuiltGarage 2 жыл бұрын

Thanks for watching!

@guglielmodicarlo4139 3 жыл бұрын

yes that will work, IF your fuel tank has a provision to accept a return line, another way to do it , is connect the fuel regulator return line back to the fuel pressure regulator inlet line, , kinda like putting it back to the tank, avoiding vapor lock etc, thanks

@thisislargemouth5566 2 жыл бұрын

It does matter if you go before or after. After the carb is always better so that fuel doesn't sit during idle in those lines in your hot engine bay.

@MoonBuiltGarage 2 жыл бұрын

That's why I went with a return-style regulator, so the fuel doesn't sit and get hot, it is constantly moving

@jbeam794 2 жыл бұрын

I have that same regulator to install the same way you did it. I also have a 100 psi holley pump in the tank ready for EFI . That regulator wont bring the pressure down to 6 will it. Holley says it will but now im not sure about that. Lots of other people having your same problem .

@MoonBuiltGarage 2 жыл бұрын

That was why I installed the regulator that I did, but yeah...I flooded my carb so bad that fuel came out of every seal...I switched to a lower volume pump and use the regulator to keep the pressure even.

@johnm5625 3 жыл бұрын

I’m suggesting if u have problems go with the 12845 it’s ment for higher out put fuel sistems

@MoonBuiltGarage 3 жыл бұрын

I'll keep that in mind. I'm only using it while I'm running the carbureter. Once I switch over to fuel injection I shouldn't need an external regulator

@dcoop1422 2 жыл бұрын

Mine looks identical to this one but has a gauge of 0-100psi. Can you change the gauge to a 0-15psi gauge for easier readings of the low pressures or is the unit actually different to the 0-100psi versions? I mean, 6psi is 6psi, right? Not sure why there are 'carby' models when the other ones start at 0psi also.

@MoonBuiltGarage 2 жыл бұрын

I would think you could swap the gauge, but since the unit can go all the way to 100psi I think it would be too difficult to adjust it accurately....It may be best to replace it with a unit like this one that only goes to say 9 psi or so

@electrickid101 2 жыл бұрын

I had to run mine in a loop and regulate to the pressure side

@thedobermangang3503 2 жыл бұрын

i have a bypass12-887 i have a vacumm port outlet on it do that line have to be hook up

@MoonBuiltGarage 2 жыл бұрын

That's a Vacuum/Boost reference port I believe...it should be connected to manifold pressure to adjust the fuel being delivered to avoid a lean condition when hammering the throttle

@pedroestudillo9975 2 жыл бұрын

Can you put a fuel filter that comes with a return first , and then put a a fuel regulator after (without) return ?

@jeremybaxter3722 Жыл бұрын

hey how did this work out? (gonna check out your vids after this) im looking to run 65psi to 5-6 psi and reviews on everything are so wild

@MoonBuiltGarage Жыл бұрын

I don't think this was the right regulator for that. Mine didn't regulate the pressure down that low, so I ended up just switching to an electric pump that only put out about 9-10 psi, and used this regulator to knock it down to 6-7 or so, and keep the pressure from fluctuating

@jeremybaxter3722 Жыл бұрын

@@MoonBuiltGarage lol yeah that’s what all of the reviews were saying. Seems like you need a two stage to do it effectively. Thanks

@eddiee9416 2 жыл бұрын

Have you got it running with ths carb ? If so is that fuel pressure regulator holding 9 psi?

@MoonBuiltGarage 2 жыл бұрын

This regulator could not regulate the pressure from an electric pump designed for fuel injection down to a pressure usable for a carburetor. I ended up installing an electric pump better suited for a carb, but I still use this regulator to set the pressure to 5.5 psi

@eddiee9416 2 жыл бұрын

@@MoonBuiltGarage thanks for the fast reply u gust saved me some time and$👍 what fuel pump u running now?

@MoonBuiltGarage 2 жыл бұрын

I picked up some cheap eBay special for around $30 or so...it pushes around 7-9 psi...

@hortyist1 3 жыл бұрын

I dont get how it could work after the carb. I would think by then its too late. since the pressure from the pump is being regulated down before it gets to the carb.

@MoonBuiltGarage 3 жыл бұрын

I'm not so sure either...but people smarter than me say it works. I just plumbed mine before the carb and that's how I'm gonna send it.

@johnm5625 3 жыл бұрын

@@MoonBuiltGarage how did it work out

@MoonBuiltGarage 3 жыл бұрын

Not sure yet..I haven't gotten my engine back from the machine shop yet