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-   -   Adjustable fuel pressure regulator (https://www.gmforum.com/performance-brainstorming-tuning-96/adjustable-fuel-pressure-regulator-200047/)

2000SilverBullet 04-03-2004 11:58 PM

Adjustable fuel pressure regulator
 
I installed the adjustable fuel pressure regulator regulator today.
The main reason I got it was for the gauge and because I like to have the ability to adjust and compensate over time.
It's a fine piece and looks much better than stock.
I ran with just the gauge for a week to monitor the base line pressure from the stock regulator. It was preset at 52 psi stock.
I followed the Casper recommendation of 54 psi setting for street. They say to bump it up to 56 psi for the track.
The stainless braided hose and gauge look real cool. 8)

PontiacDad 04-04-2004 12:48 AM

Right on, I saw this kit and thought it looked cool too :wink:

Do you have any pics :pooper:

2000SilverBullet 04-04-2004 03:28 AM

http://images.cardomain.com/member_i...40_71_full.jpg

Gauge next to brake reservoir. I had it placed beside the engine cover but I wanted it farther away from heat sources for safety reasons.

http://images.cardomain.com/member_i...40_72_full.jpg

You can see the brass tee connection for the gauge. It comes with a new brass cover for the schaeder valve on top to replace the factor black plastic one.
You can also see the adjustable regulator. It's a machined stainless piece that's about 3/8" longer than the stock one but with an allen key adjustable screw and locknut to secure it. :wink:

There is simply a C-clip to remove and the old regulator just pulls right out. Quite a bit of fuel came out too. I did it with a cold engine to be safe.
My first run with it, I brought my fire extinguisher along just to be extra cautious. No leaks. Used teflon tape for the treaded tee and gauge connections.

There's a lot of adjustment room. I can vary it from max...about 65 psi (I'm not really sure what the maximum the fuel pump can produce) down to 35 psi.

PontiacDad 04-04-2004 04:47 AM

Nice looking setup :wink:
And the gauge hose is nice and long so you could get the gauge out of the heat too, nice.

2000SilverBullet 04-21-2004 12:15 AM

While replacing the fuel gauge sending unit today, we had to depressurize the fuel system.
So, like I've done before when changing the fuel filter, I pop the hood to depress the schraeder valve on the new tee for the fuel pressure gauge.

I removed the brass cap covering the valve and was shocked to have fuel squirting out under pressure. :shock:
The schraeder valve was loose. It was quickly tightened but be forewarned to make sure it's tight if you install one.

Prior to the gauge being installed, when depressurizing, it would only squirt out a tiny bit of fuel. This time it seemed to never end. It must have peed out about a pint of fuel. :!:

The mechanic had to attach a special hose & pump attachment to drain it all.

What do you think would have caused this :?:

PontiacDad 04-21-2004 02:37 AM

Maybe a siphoning action? Could have there been residual pressure in the fuel lines?

willwren 04-21-2004 12:32 PM

The pressure and fuel volume in the line to the gauge is trying to bleed through the T at the same time as the rail. The two sources go head-to-head, and the rail overcomes the smaller source (gauge line). Just a guess.


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