Fuel pressure regulator location

Redfalken

Well-known member
Hi all,

We finally got a dry day here in Seattle so I spent a couple of hours making a bracket for my fuel pressure regulator. I'm working on installing a Weber 32/36 DGEV and I've read it's a good idea to install the Holley 1-5 psi regulator to get the 4 psi this carb likes to run well.

A while ago I moved my coil to the shock tower when I installed a MSD unit and Duraspark II distributor. I spoke with someone at a show who did this and said the coil would last longer and perform better without the heat and vibration. So as I was thinking of a place to put the regulator, I figured why not use the bolts that held the coil bracket on to attach a bracket for the regulator. I think it's far enough away from the engine that extreme heat shouldn't be an issue. The bracket is made from some pretty thick sheet metal and since I have a rigid line from the pump it shouldn't vibrate too bad.

One concern I had was the filter. You're supposed to put it between the pump and the regulator but there won't be room with this setup. I was thinking I would put a filter in the hose between the fuel line from the tank and the pump and then another filter between the regulator and carb.

For now I'll run a hose to the carb but may eventually plumb a hard line around the front of the valve cover. Also, I have a fuel gauge on the regulator to get it set and make sure it's stable but might take it out and plug it up once it's adjusted. For one thing I borrowed it from a friend and it seems like it might be more likely to leak someday than a plug. I'll have to read the gauge with a mirror too since it points to the ground.

Before I spend more time filing the edges of the bracket and painting it, I was wondering if anyone saw any potential problems with this setup. Thanks!

regulator.jpg
 
I can't see a problem with regulator location. Not a big fan of those reg units but as you have a mechanical pump I don't foresee issues as with a Holley electric unit.

For the gauging, this is my suggestion:

3/8" NPT plug in the bottom end. 3/8" NPT male-male with 1/8" NPT hole for the gauge, coming off the top. Earls (and probably others) make this part. A gauge is really worth having there and the Summit one is under $20. Then either a hose barb and inline plastic filter, or female-female and a screw-in metal canister filter, followed by hose barb.
 
I have a fuel filter before and after the mechanical pump with the regulator ahead of the DFAV 32/36.

(Originally had problems with dirty tank/lines)

I like the plastic inline filters for assurance that the filter is flowing but I wonder about the pressure capabilities. I've read some horror stories about the inline glass filters breaking and causing fires. The plastic clear filters after the pump never gave me a problem with the fuel pressure -(yet?).

I plumbed a tee to hook a vac/press. guage to the carb inlet for testing. Maybe you could plumb the guage to a more convenient location.

Here's a series of pics on my fuel setup:
http://photobucket.com/albums/v296/Powe ... ER%20JETS/


ENGINEDONEAIRCLEANEROPEN.jpg

Powerband
 
HI
I don't think with a stock fule pump your going to have a to high fuel prusher prob... If your going to run the regulator with a gage on it I would atleast turn it over or just swap the ends so the gage is on top so you can read it...
Tim
 
8) personally i would like to see the regulator set closer to the carb, but otherwise the location is fine.
 
Thanks for the advice guys. I do remember reading something about keeping the regulator as close to the carb as possible so maybe I'll just go with the hose going up over the valve cover (6-8").

As far as the gauge goes...I'll maybe deal with that later. I'll be monitoring it for a month or so and I was hoping to just do without one. I really don't want to get the plumbing to clunky.

Now to work on the linkage. 23 consecutive days of rain and no garage really make these projects take a long time to complete.
 
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