Pressure Regulator recommendation

I have a low 12 second 408 powered Duster. My fuel pumps (electric into Mechanical) are overpowering the needles in my TQ at WOT over 6000 rpm.

I need a fuel pressure regulator to hold the pressure closer to 5, but still flow enough to keep from starving the engine. Any recommendations?

jimmyray said:

I have a low 12 second 408 powered Duster. My fuel pumps (electric into Mechanical) are overpowering the needles in my TQ at WOT over 6000 rpm.

I need a fuel pressure regulator to hold the pressure closer to 5, but still flow enough to keep from starving the engine. Any recommendations?

Click to expand...

What's your fuel pressure at the carb at 3000 and 6000 RPM. I'd first take out one of the pumps, probably the mechanical, and just run the electric and recheck your fuel pressure. I'd also go a little higher than 5#'s, 6-7 would be better.
Here's what I run on a HV mechanical supplying a 750 DP'r
http://www.summitracing.com/parts/HLY-12-803/

I have a Carter mechanical strip pump that was putting out a little too much pressure. I went with a Quick Fuel unit from Summit at a good price: http://www.summitracing.com/parts/QFT-30-803/

I can tell you not to waste your time with the retail parts store inline regulators that have the dial on them.

I had just the electric, and it worked fine. However, I got tired of the noise! I isolated, insulated and rubber mounted, and still got the noise. The Mechanical was installed to get rid of the noise. For the street, and short WOT blasts, the mechanical is enough. However, for sustained WOT (more than 5 seconds) it leans out. With the Electric on, it will sometimes flood the carb, especially at WOT over 5000-6000 rpm. The electric is nice for the priming of the carb after sitting a week or two.

I saw the Quick Fuel unit, and especially liked the price. However, I was not sure if it worked ok, and would not restrict overall fuel flow.

I would go with just the mechanical fuel pump, some of the "muscle car pumps" from Summit advertise around 6 PSI, with no regulator required, which would be plenty.