Technical Fuel Pressure regulator

I'v been following a thread about a tri- power set up. I've talked myself into putting a regulator on my car. Its 348 tri power.With that said. I really dont like the look of regulator setting out there. Just me, pet peeve .I'm getting one that will set at about 2-4 . But are there smaller ones and can/where can i hide it.It just will not look right on my 348. Any ideas?

 

On my Model A w Cadillac 390/tri power I put the regulator under the floor (approx where the passengers feet were). I also had a fuel pressure gauge in the engine compartment, plumbed from a port on the regulator.

In my case, it was a full return fuel system so it was a bit of a hassle to make all the hard lines, but with a no return system it should just be to "splice in" the regulator on the existent fuel line.

Just remember to mount the regulator so you can easily adjust the pressure if necessary.

 

For the "system" to work correctly, the regulator needs to be as close to the carburetor inlet as possible.
That said, I suppose, you could put it at/under the firewall, understanding that the farther it's mounted from the carburetor, the less accurate it will be..!

Here's where I mounted mine -


Mike

 

A fuel presssure regulator made a world of difference for my two strombergs.

Put it in plain sight, it let's people know that your keeping an eye on things.

Rich

 

mine is bolted to a bracket at back of carb. It is a Holley-hard to see under air cleaner--has been there and worked well for 10 years.

 

Here's mine, I don't think it looks out of place.

 

Should be mounted close to carb like Mike stated. Here is mine.

 

If you have the factory air breather, you should be able to hide it under it.

 

Tuck it behind the blower where no one will see it.

 

Some things are just too hard to hide , so just mage a clean setup. Necessary stuff is what it is. With a 348 people really shouldn't notice a small addition

 

On my 348 I built a bracket and mounted it in front of the head. Here is a pic of when we were setting up the fuel lines fwiw. Sold the car to a friend and he drove it in 100 degree summer weather last year without any heat soak issues if you might wonder.

 

Well where you have it ,it doesn't stick out like sore thumb.I guess like 56 said above. Some things you just gotta have/do.

 

^^^^^X2. What's the point of looking cool if it doesn't run right?

 

In a lot of cases, can't you just use a mechanical fuel pump and skip the regulator?
If you use a rebuildable type pump, you can replace the main spring with a lighter one to get the desired pressure.

 

Probably not the look you're going for but here's what I did.

Sent from my Moto Z (2) using The H.A.M.B. mobile app

 

Then with the air cleaner.

Sent from my Moto Z (2) using The H.A.M.B. mobile app

 

So in other words , you have no idea what your pressure at the carbs is ??

 

so what regulator did you use?

 

I'm going to go with Moriarty on the fuel regulator mounted near the tank. The regulator mounted in the engine bay gets much hotter, a recipe for vapor lock. I fought vapor lock for several years (OT 392 CID IH engines - I had to avoid Tucson and Phoenix in warm weather) before going further OT (the dark and smokey side) with diesel trucks.

 

I think it was my thread that got B.A.King started on this. I have always had the regulator just before it goes into the fuel block on the firewall and then the three lines feed to the carbs. Did the changeover with the Holley regulator and put the lighter spring in and set at 2.5 lbs and looks like my problem solved. The car idles better and smoother on acceleration.

 

Use a Malpassi Filter King pressure regulator and you won't mind it being visible in the engine compartment at all.


They also make just a regulator without the filter bowl, it looks great too:



You can find them on the bay.

 

I got one of those regulators. Very nice item.

 

I like the glass bowl, mine is aluminum.

 

I think i like that ....a lot!! MANY THANKS!!!

 

Did you set it up with a return line or without ?
Thanks
Clemens.

 

What is the pressure range, and how is it adjusted?

 

A few years ago oj on here was taking a brass Hilborn pop off body and changing the spring and provided shims so you could get 2.5 / 3 / 3.5 PSI. Could mount on fuel pump outlet, but would need a return. I can't find the post where he showed one installed. I bought one for a slightly different application. You might PM him for a picture and see if he still makes them.