fuel pressure regulators

[tattooed_pariah]

I know, I know.. go back to stock mechanical and don't worry about this.. got it.. not going to do it. if that's all you have to say, please move along..

Running a Holley Red Electric pump and Petrol king Regulator right now. Been running this setup 10+ years with no problems. Did it because I want AN lines from tank to carbs and I have that.

Now I know that Holley Red is putting out some good PSI and that poor regulator is getting hammered dropping it back down to 3.5psi for my dual 40IDFs.

Does anyone make a regulator with -6AN inlet/outlet fittings and a return port that can drop pressure to 3.5PSI?

I can't seem to find anything anywhere, almost everything with a return line is at EFI pressures..

Thanks!
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-pariah
'72 Volksrod

[jim martin]

Look this up not sure if it’s still a thing .forget Holley , crap.
Run a Mallory 110 pump with the by pass modified and their return style regulator.
Was the best setup I ever ran .
Turned 11 flat with that setup.
The pump is so durable I use it as a oil pre pump now , generates 20psi oil pressure nonproblem
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[GearheadJim]

Check out Aeromotive regulators. I have the 13222 but that is a non-return. I expect they have a version with return. Buy once, cry once. I'm too poor to be cheap.
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[halfassleatherworks]

Please enlighten me, I looked up the specs of the Holley and the Mallory and my question is why do you need a 97 or 110 gallon per hour pump at over twice the pressure then you need then restrict it down.

[mikedjames]

One good reasonn for pumping a lot of fuel through a bypass regulator back to the tank is that it keeps the fuel in the loop cooled down- both for cooling the fuel pump and also removing engine bay heat from the fuel lines.. So no vapor locks.
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[BFB]

Ive run a Holley red on a draw through 2276 for about ten years now and a non return regulator down to 2.5 psi, just ballparking i have over 30k miles on it. Those fuel pumps are internally bypassed and dont need return lines, so it’s not necessary.
_________________
"how am i supposed to torque the rear wheel nut to 250 ft lbs??? " - clonebug
An interesting thing happens in forums where everyone starts parroting the same thing and "common knowledge" takes over.
Most experts aren't.

[tattooed_pariah]

[jim martin]

A dead head system is just that stop and go.
Many actually used to Tee in a small jet just before the regulator to eliminate vapour lock and lesson the pulse effect .
Think of a consistent source always there , pump runs more efficiently and with a consistent supply of fuel and quieter as well .
I ran the 110 as I fed both the carbs and the nitrous system without issue. Fuel
Volume was always rock solid . Even when spraying 150 shot.
- there is one old wives tail down to run a nitrous system you need 2 pumps . Wrong you just need the correct setup
_________________
B.C's fastest street legal vw , June 2006 Hot VW's feature car 9.81 sec at 145.26mph.
Sponsored by :
LUCAS OIL PRODUCTS http://www.lucasoil.com
KROC head porting services
Dialedinperformance.com
Airspeedparts.com topic http://airspeedparts.com/forums/index.php?topic=914.0

[tattooed_pariah]

[jim martin]

Here is a better way to think .
With a dead head system when the pressure from pump to regulator rises To high the internal pump bypasses opens and dumps the pressure so now the pump needs to repressurise the line that’s the stop and go /pulse effect.Not the best but works .

But with a return style there is no pump bypass in the case of the Mallory you install the supplied brass piston so the pump is constantly moving as much fuel as possible in a continuous loop and when you need fuel , bang it’s 100% there right now . No waiting.
Hope that makes better sense.

Most people don’t want the hassle of running an additional line back to the tank.
But if your modifying your car with performance upgrades what’s another thing to ad to the list
_________________
B.C's fastest street legal vw , June 2006 Hot VW's feature car 9.81 sec at 145.26mph.
Sponsored by :
LUCAS OIL PRODUCTS http://www.lucasoil.com
KROC head porting services
Dialedinperformance.com
Airspeedparts.com topic http://airspeedparts.com/forums/index.php?topic=914.0

[liquidrush]

Check out this fuel pressure regulator on amazon, it checks all of your boxes. I run the Edelbrock low pressure pump that makes 5-7psi and use that regulator. Everything is overkill but I tend to buy stuff like that. I also run the revolution pump controller, you can get that from flea bay.

https://a.co/d/4DGlWXD

https://ebay.us/m/kBPRK2

[jim martin]

nice find , i would give that regulator and controller a go
_________________
B.C's fastest street legal vw , June 2006 Hot VW's feature car 9.81 sec at 145.26mph.
Sponsored by :
LUCAS OIL PRODUCTS http://www.lucasoil.com
KROC head porting services
Dialedinperformance.com
Airspeedparts.com topic http://airspeedparts.com/forums/index.php?topic=914.0

[ORANGECRUSHer]

Im dumb
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[1950split]

The aeromotive 13222 is a nice piece and works perfectly. Furthermore it is rebuildable. I have it in the car for ca 2 years now. I added an fuel pressure gauge and a sender just to watch if it fluctuates but nope, its perfect.

Certainly a regulator with a return line is better but I did not want to go through all the hassle as everything was already fitted.

[tattooed_pariah]

Thanks everyone!

I ordered this one today while at work: https://www.summitracing.com/parts/SUM-220058

I don't want total crap, but a regulator that costs more than my pump is out of my budget right now..

In about a year I'll be retiring and blowing my bug apart for a ground up rebuild, so i want something decent for now, but i know it'll probably get replaced soon..
_________________
-pariah
'72 Volksrod

[1950split]

Nice part with a return port, let us know if you're happy with it so that we have another option in future !

[stevemariott]

I upgraded my fuel system over the winter, and nearly went with that regulator - keep us posted on how it works out for you.

I ultimately ended up with the Aeromotive 13222.

[tattooed_pariah]

Summit package arrived today..

I wasn't paying close enough attention, so I ordered two -6orb to -8AN fittings instead of -8orb to -6AN fittings..

in the meantime, i used some ptfe tape thread to plug the extra ports and install the suction fitting.

since I have to buy new fittings, i'm thinking -8orb to -6an for the discharge port to the carbs, and then i'm trying to find a -8orb to 5/8 barb 90* fitting for the return. the return port is on the bottom of the regulator, and I'm going to run it up into the trunk (pump and regulator are mounted on the firewall behind the passenger wheel), then into a Y fitting so it will spit into the tube that the vent comes off of which is 16mm or roughly 5/8"..

I'm guessing I'm going to need to cap off the vacuum port..

_________________
-pariah
'72 Volksrod

[BFB]

Looks like OP already bought a new FPR but for anyone else looking , the Malpassi ones that C.B. sells are pretty damn nice and reasonably priced. Ive used a couple of them so far.

https://www.cbperformance.com/product-p/7247.htm
_________________
"how am i supposed to torque the rear wheel nut to 250 ft lbs??? " - clonebug
An interesting thing happens in forums where everyone starts parroting the same thing and "common knowledge" takes over.
Most experts aren't.

[tattooed_pariah]